Personal Energy Availability Questionnaire (PEAQ)

If you are striving to reach your peak performance, then the PEAQ can help you reach your personal full potential. Click here to get started on the PEAQ

Matching your energy intake to your energy demands helps you reach your personal peak health and exercise performance. On the other hand, failing to meet your energy demands results in low energy availability. This increases your risk of developing relative energy deficiency (REDs) and its adverse health and performance consequences.

People of any age, whatever their level and type of exercise, can be at risk of developing REDs; from elite dancers and athletes to recreational exercisers.

The PEAQ is a mobile Application that will guide you through a series of questions about exercise, physical characteristics, nutrition, hormone function and well-being. It just takes a few minutes.

Your PEAQ report instantly generates a REDs Risk Score and provides valuable insights into your energy status and potential risks, along with guidance. The PEAQ is intended for those 16 years of age and over.

The PEAQ has been developed based on in several published research studies where the questionnaire responses and scores have been correlated with measurements of hormones and bone health in athletes in various sports [1-7] and dancers [8-12]. These questionnaires were cited in the updated International Olympic Committee (IOC) consensus statement on REDs 2013.

However the PEAQ it is not a substitute for seeking medical advice. Dr Nicky Keay offers personalised health advisory appointments

Get started on your journey to reach peak performance by completing the PEAQ.

References

  1. Keay, Francis, Hind  Low energy availability assessed by a sport-specific questionnaire and clinical interview indicative of bone health, endocrine profile and cycling performance in competitive male cyclists BMJ Open Sports and Exercise Medicine 2018
  2. Keay, Francis, Hind  Clinical evaluation of education relating to nutrition and skeletal loading in competitive male road cyclists at risk of relative energy deficiency in sports (RED-S): 6-month randomised controlled trial  BMJ Open Sports and Exercise Medicine 2019
  3. Keay, Francis, Hind  Bone health risk assessment in a clinical setting: an evaluation of a new screening tool for active populations  MOJSports Medicine 2022;5(3):84-88. doi: 10.15406/mojsm.2022.05.00125
  4. Assessment of Relative Energy Deficiency in Sport, Malnutrition Prevalence in Female Endurance Runners by Energy Availability Questionnaire, Bioelectrical Impedance Analysis and Relationship with Ovulation status. Clinical Nutrition Open Science 2025S. 
  5. Body composition, malnutrition, and ovulation status as RED-S risk assessors in female endurance athletes, Clinical Nutrition ESPEN 2023, 58 :720-721
  6. Keay N, Craghill E, Francis G Female Football Specific Energy Availability Questionnaire and Menstrual Cycle Hormone Monitoring. Sports Injr Med 2022; 6: 177
  7. Keay N. Current views on relative energy deficiency in sport (REDs). Focus Issue 6: Eating disorders. Cutting Edge Psychiatry in Practice CEPiP. 2024.1.98-102
  8. Keay N, Francis G, AusDancersOverseas  Indicators and correlates of low energy availability in male and female dancers. BMJ Open in Sports and Exercise Medicine 2020
  9. Nicolas J, Grafenuer S. Investigating pre-professional dancer health status and preventative health knowledge Front. Nutr. Sec. Sport and Exercise Nutrition. 2023 (10)
  10. Keay N, Francis G. Longitudinal investigation of the range of adaptive responses of the female hormone network in pre- professional dancers in training March 2025 ResearchGate DOI: 10.13140/RG.2.2.30046.34880
  11. Nicola Keay, Martin Lanfear, Gavin Francis. Clinical application of monitoring indicators of female dancer health, including application of artificial intelligence in female hormone networks. Internal Journal of Sports Medicine and Rehabilitation, 2022; 5:24. 
  12. Nicola Keay, Martin Lanfear, Gavin Francis. Clinical application of interactive monitoring of indicators of health in professional dancers J Forensic Biomech, 2022, 12 (5) No:1000380 
  13. Mountjoy M, Ackerman KE, Bailey DM et al 2023 International Olympic Committee’s (IOC) consensus statement on Relative Energy Deficiency in Sport (REDs) British Journal of Sports Medicine 2023;57:1073-1098
  14. Keay N “Hormones, Health and Human Potential: A guide to understanding your hormones to optimise your health and performanceSequoia books 2022

The state of play on relative energy deficiency in sport (REDs): Psychological aspects

Abstract

This article explores the current state of play regarding relative energy deficiency in sport (REDs), highlighting the recent updates from the International Olympic Committee (IOC) consensus statement September 2023. Psychological factors and mental health are recognised as having a reciprocal relationship in both the aetiology and outcome of chronic low energy availability leading to REDs. This has important implications in terms of prevention and management of individuals experiencing REDs. Unintentional or intentional unbalanced behaviours around exercise and nutrition leads to a situation of low energy availability. Low energy availability is not synonymous with REDs. Rather cumulative, sustained low energy availability, particularly low carbohydrate availability, leads to the clinical syndrome of REDs comprising a constellation of adverse consequences on all aspects of health and performance. This situation can potentially arise in both biological sexes, all ages and level of exerciser. This is of particular concern for the young aspiring athlete or dancer, where behaviours are being established and in terms of long-term consequences on mental and physical health. The mechanism of sustained low energy availability leading to these negative health outcomes is through the adaptive down regulation of the endocrine networks. Therefore, raising awareness of the risk of REDs and implementing effective prevention and identification strategies is a high priority.

Introduction

Relative energy deficiency in sport (REDs) was first described in the International Olympic Committee (IOC) consensus statement published in the British Journal of Sports and Exercise Medicine (BJSM) 2014 (Mountjoy, 2014). Since then, there have been updates published in 2018 (Mountjoy, 2018) and most recently in September 2023 (Mountjoy, 2023).

Seminal studies of female collegiate runners in 1980s found that those athletes with higher weekly training load, but same food intake as those with lower training load, experienced menstrual disruption, including secondary amenorrhoea and poor bone health (Drinkwater, 1984). This led to the description of the female athlete triad, which comprises a clinical spectrum of eating patterns, menstrual function and bone health. This ranges from optimal fuelling, menstrual function and bone health; to eating disorders, amenorrhoea and osteoporosis.

However, with further evidence emerging it became apparent that the impact of under fuelling is not confined to menstrual and bone health. Rather that the consequences of under fuelling are multisystem and can include male athletes. This led to the initial description of REDs in 2014 as a syndrome comprised of the potential adverse effects on many systems in the body with both physical and mental health implications. Crucially, unlike the female athlete trad, REDs also included the potential negative sequalae on athletic performance. Ultimately the goal for all athletes is to perform to their best, so REDs is not something of interest just in academic or clinical circles. REDs is highly relevant to both biological sexes and all levels and ages of exerciser.

What is Energy Availability?

The underlying aetiology of REDs is low energy availability. The life history theory describes how biological processes compete for energy resources (Shirley, 2022). Energy requirement for movement is prioritised from an evolutionary point of view in order to take evasion action from predators. The residual energy from food intake is described as energy availability. This is roughly equivalent to resting metabolic rate for the individual. Simply lying in bed all day, staying alive, is high energy demand for humans as homeotherms. The numerical value of energy availability is expressed in Kcals/Kg of fat free mass. The energy availability requirement for health will vary between individuals depending on sex, age and body composition. Although energy availability is a very useful concept, in practice is it not actually measured outside of the research setting. Rather objective surrogates indicating energy availability can be measured such as triiodothyronine (T3) which is used as a primary indicator of low energy availability as outlined in the update REDs clinical assessment tool described in further detail below (Stellingwerff, 2023 ).

An important highlight from the updated consensus statement on REDs is that it is specifically low carbohydrate availability that is most detrimental, especially for reproductive hormone networks. Comparing isocaloric intake, where there is a low proportion of energy from carbohydrate, this has the most marked negative consequence on both hormone health and performance. The mechanism of sustained low carbohydrate availability appears to involve the hormone leptin, an adipokine, secreted by adipose tissue. Low levels of leptin cause suppression of the reproductive axis via the hypothalamus-pituitary axis (Keay, 2022).

Aetiology of Low Energy Availability

Low energy availability is a situation where, once energy demand from movement has been met, the residual energy available is insufficient to support the functioning of other biological life process.

Low energy availability could arise unintentionally or intentionally (Keay, 2019). Unintentional low energy availability is where an exerciser does not appreciate the energy demands of exercise and other activities with an energy demand. For example, many athletes will not consider the energy required to “commute” to a training session on foot or bike. Unintentional low energy availability could be due to practical issues: for example, a long cycle ride over several hours will require the cyclist to take nutritional sources in the pockets of clothing and/or plan ahead suitable stops where it is possible to obtain nutrition. Similarly, going on a training camp, especially at altitude, will greatly increase energy demand from exercise and needs to factored in. Finances could also be a limiting factor.

On the other hand, intentional low energy availability is where an exerciser intentionally restricts nutrition intake in the belief that this might confer a performance advantage in terms of body weight, composition or shape. This is particularly associated with any exercise against gravity such as running, road cycling, climbing; weight category sports like martial arts and aesthetic forms of sport (diving, gymnastics) and dance.

For individuals with intentional low energy availability, psychology and mental health can have a reciprocal interaction (Pensgaard, 2023). Those exercisers with personality characteristics such as self-motivation, perfectionism can be very laudable traits in terms of dedication to exercise training to achieve success. However, when these characterises impact and support rigid behaviours around training and nutrition, this can become problematic. This is shown in Figure 1 “Psychological factors in REDs”. Those who are able to adapt to external pressures and have a flexible approach to training and nutrition are more likely to experience positive outcomes. Whereas those who have a more rigid approach, which might include disordered eating and or an eating disorder and/or exercise dependence are more likely to experience negative outcomes. This reinforces self-doubt and culminates in a vicious circle of perpetuating rigid behaviours and negative outcomes in terms of both physical and mental health.

Evidence for this interaction between psychological factors and risk of REDs was found in our study of dancers, referenced in the updated IOC consensus statement. A significant relationship was found between psychological factors such as anxiety around body shape/weight and missing training. These psychological factors in turn had significant associations between physical manifestations of low energy availability (low body weight) and physiological outcomes (menstrual irregularity) (Keay, 2020). Similarly, in more of our published research papers referenced in the IOC consensus statement focusing on male athletes, an significant association was found between cognitive nutritional restraint and negative physiological and performance outcomes (Jorov, 2021).

This reciprocal interaction between internal and external factors is a systems biology approach, highlighted in the recent updated IOC consensus statement. From a physiological point of view the brain is a high energy demand organ, requiring a good supply of glucose. So low carbohydrate availability will restrict this cerebral supply, which can impair cognitive function and ultimately good decision making. It is interesting to reflect that the neuroendocrine gatekeeper, the hypothalamus keeps a watching brief on internal and external factors, not distinguishing between the source of stressors when putting in motion an adaptive response (Keay, 2022).  

Consequences of Low Energy Availabiity

Low energy availability is not synonymous with REDs. Indeed, short term low energy availability might initially bring some good performances. Low energy availability becomes problematic depending on the time scale, which in turn determines the degree of adaptive response, described in the clinical physiological model of REDs (Burke, 2023). The first system to adapt to low energy availability is bone: bone turnover moves in favour of resorption over formation. This is why bone stress responses, specifically bone stress fractures, can be an early warning sign of REDs and designated a primary indicator in the updated IOC consensus statement. There will follow sequential down regulation of metabolic rate mediated via the thyroid axis, followed by the reproductive axis. In women primary amenorrhoea or sustained functional hypothalamic amenorrhoea (FHA) of 6 months or more duration is a severe primary indicator of REDs. In men, low rage testosterone is a severe primary indicator.  Ultimately body composition will be adversely affected, with the only endocrine system to be up regulated being that of the hypothalamic-pituitary-adrenal axis (Keay, 2019).

Health

Cumulative low energy availability causes the syndrome of REDs, which produces progressive adverse effects on all aspects of health: physical, mental and social, described in the REDs conceptual model. Poor sleep will compound these negative health effects (Keay, 2022).

Performance

Although there may be some initial good performances, chronic low energy availability will result in adverse performance consequences of REDs, described in the REDs performance conceptual model. In our referenced papers in the consensus statement, we found that in male athletes, short term low energy availability impacted performance (Jurov, 2022). In another of our referenced studies we showed that male cyclists in sustained low energy availability over 6 months, not only experienced bone loss commensurate to astronauts in space, but these cyclists also underperformed compared to their energy replete fellow cyclists (Keay, 2019). On a positive note, explaining to athletes and dancers that improving energy availability will improve their performance, can help in overcoming problematic behaviours.

Identification of those at risk

In view of the potential adverse health and performance effects of REDs, it is a priority to raise awareness of this risk to affect prevention. To this end the British Association of Sports and Exercise Medicine (BASEM) has a website health4performance.co.uk dedicated to providing reliable information on REDs for athletes, parents, coaches and health care professionals together with BASEM endorsed online courses. Targeting and identifying those at increased risk is very important. Young athletes and dancers can be most severely affected as down regulation of hormone function due to low energy availability can cause delay in growth and development. In particular, delayed puberty and menarche dampens the accrual of peak bone mass, with implications for bone health (Keay, 2000). Furthermore, there is evidence that these adverse effects on bone health might not be fully reversible (Keay, 1997)

From a psychological point of view, the young aspiring athlete and dancer is also at heightened risk. Explored and viewed by many dancers in “The Dark Side of Ballet Schools” Panorama (season 33, episode 28). Selection for specialised training will inevitably favour those who are self-motivated and dedicated. In a group of individuals sharing similar psychological traits this could act as a “breeding ground” for reinforcing these characteristics in ways that could lead to behaviours which are not conducive to positive outcomes. Rather reinforcing the negative interpretation of external and internal factors, leading to a vicious circle of reinforcing attitudes and behaviours leading to REDs, as described in Figure 1

Risk stratification

Early identification of those at risk of developing REDs is an important preventative strategy. Especially for young aspiring athletes and dancers where behaviours around eating and exercise are being developed and established. A step-by-step approach is provided in the updated version 2 of the Relative Energy Deficiency in sport Clinical Assessment Tool (REDsCat v2) to identify and risk stratify individuals (Stellingwerff, 2023 ). Initial, low cost, screening questionnaires can be helpful, particularly if tailored to a specific sport/activity or dance. For example: sports specific energy availability questionnaire (SEAQ) (Keay, 2018) and dance energy availability energy questionnaire (DEAQ) (Keay, 2020). This can be helpful in identifying those individuals where further investigation is clinically indicated. As REDs is a diagnosis of exclusion, targeted blood testing excludes medical conditions per se and provide objective quantification in the stratification of risk. Severe primary indicators of REDs are issues in the reproductive axis: long duration of amenorrhoea in females and low range testosterone in males.

From a combination of all these results the individual can be placed in an appropriate risk category. The updated REDs CAT v2 includes a finer grained approach with four categories from green, yellow, amber to red.

This assessment also provides the background on which to base the appropriate level of support. For all, management will be directed at restoring energy availability and include modification of training and nutritional intake. However, the details will vary according to the severity of REDs. Individuals with intentional REDs, especially when formally diagnosed with an eating disorder, will need most intensive input than a person with transient unintentional low energy availability.

Management

A nuanced approach is required for individual athletes, depending on their risk stratification and biopsychosocial factors. In all cases some degree of psychological support will be helpful. Involvement of the extended multidisciplinary team is ideal: medical doctor, dietician, coach and parent (where appropriate) with the athlete/dancer at the centre.

In order to restore energy availability this will require careful discussion around nutrition in terms of consistency of eating patterns and composition of food groups consumed. This starts with regular meals containing good portions of complex carbohydrate and protein. Studies show that inconsistent intake of carbohydrate (eg “backloading” eating to the evening) produces an unfavourable hormone profile. Fuelling around training is also a high priority for hormone health and driving positive adaptations to exercise. Pre training consumption of carbohydrate together with post training refuelling with both complex carbohydrate and protein within 20 minutes of stopping are important behaviours for favourable hormone response to exercise (Keay, 2022).

In terms of pharmacological intervention, NICE guidelines have been updated 2022 in recommending body identical hormone replacement therapy (HRT) over the combined oral contraceptive pill (COCP) for bone protection in those with evidence of bone poor health due to functional hypothalamic amenorrhoea (FHA) as a consequence of REDs (BASEM, 2023). Poor bone health is defined as age matched Z score < -1 of the lumbar spine (trabecular bone particularly sensitive to low oestradiol) and/or 2 or more stress fractures at a site of concern (trabecular rich bone). For male athletes/dancers external testosterone is not appropriate as this supresses internal hormone production. Furthermore, testosterone is on the world anti-doping authority (WADA) banned list and it is not possible to obtain a therapeutic use exemption (TUE) as REDs is a functional condition, not a medical condition.

Prevention

Prevention is always the ultimate goal. In order to achieve this aim, a cultural shift in sport and dance is required. Emphasis on the fact that health is a prerequisite for performance. Pursuing a lighter body weight or leaner body composition will not automatically lead to improved performance. Each individual will have a personal tipping point. As we are all different, there is no such thing as a generic “ideal” weight/shape/body composition.

In practical terms, prevention can be considered as primary, secondary and tertiary (Torstveit, 2023). Primary prevention consists of providing and disseminating reliable educational resources. Secondary prevention includes early identification of those at risk of developing REDs, together with prompt and correct diagnosis. For example, regardless of whether an athlete or dancer, amenorrhoea in a woman of reproductive age (apart from physiological amenorrhoea of pregnancy) is never “normal”; whether blood tests are in range, or not. The tertiary level of prevention encompasses evidence-based treatments. As mentioned above, NICE guidelines are now in line with Endocrine Society and IOC in advising temporising HRT for bone protection in FHA. Not the COCP which masks underlying hormone dysfunction and is not bone protective. Similarly, thyroxine is not advised where there is downregulation of this axis as a consequence of REDs. This is not the same as the medical condition of a primary underactive thyroid indicated by raised thyroid stimulating hormone (TSH) (Keay, 2022).

Conclusion

Ultimately, we all have a role to play in supporting exercisers, athletes and dancers in avoiding “the REDs card” (Mountjoy, 2023). This involves the extended multidisciplinary team, starting with the individual exerciser, family, friends and coaches. Then bringing in health care professionals from medicine, dietetics and physiotherapy.

Imbalances in behaviours around exercise and nutrition can have potential negative consequences on all aspects of health and performance. On a positive note, exercise, supported with appropriate nutrition, is an excellent way to achieve and maintain optimal physical, mental and social health and support performance. This is applicable for all ages and levels of exercisers from the recreational to the amateur and elite athlete.

References

Burke LM, Ackerman KE, Heikura IAet al. Mapping the complexities of Relative Energy Deficiency in Sport (REDs): development of a physiological model by a subgroup of the International Olympic Committee (IOC) Consensus on REDs British Journal of Sports Medicine 2023;57:1098-1108.

Drinkwater B, Nilson K, Chesnut C. Bone Mineral Content of Amenorrheic and Eumenorrheic Athletes N Engl J Med 1984; 311:277-281 DOI: 10.1056/NEJM198408023110501

Jurov I, Keay N, Hadžić V et al. Relationship between energy availability, energy conservation and cognitive restraint with performance measures in male endurance athletes. J Int Soc Sports Nutr 2021;18:24. doi:10.1186/s12970-021-00419-3 

Jurov I, Keay N, Spudić D et al. Inducing low energy availability in trained endurance male athletes results in poorer explosive power. Eur J Appl Physiol 2022;122:503–13. doi:10.1007/s00421-021-04857-4 

Keay N Hormones, Health and Human Potential: A guide to understanding your hormones to optimise your health and performance 2022 Sequoia books

Keay N, Overseas A, Francis G. Indicators and correlates of low energy availability in male and female dancers BMJ Open Sport & Exercise Medicine 2020;6:e000906. doi: 10.1136/bmjsem-2020-000906

Keay N, Francis G. Infographic. Energy availability: concept, control and consequences in relative energy deficiency in sport (RED-S) British Journal of Sports Medicine 2019;53:1310-1311.

Keay N, Rankin A. Infographic. Relative energy deficiency in sport: an infographic guide

British Journal of Sports Medicine 2019;53:1307-1309.

Keay N, Francis G, Hind K. Low energy availability assessed by a sport-specific questionnaire and clinical interview indicative of bone health, endocrine profile and cycling performance in competitive male cyclists BMJ Open Sport & Exercise Medicine 2018;4:e000424. doi: 10.1136/bmjsem-2018-000424

Keay N, Francis G, Entwistleet al. Clinical evaluation of education relating to nutrition and skeletal loading in competitive male road cyclists at risk of relative energy deficiency in sports (RED-S): 6-month randomised controlled trial BMJ Open Sport & Exercise Medicine 2019;5:e000523. doi: 10.1136/bmjsem-2019-000523

Keay N. The modifiable factors affecting bone mineral accumulation in girls: the paradoxical effect of exercise on bone. Nutrition Bulletin 2000, 25: 219-222. https://doi.org/10.1046/j.1467-3010.2000.00051.x

Keay N, Fogelman I, Blake G. Bone mineral density in professional female dancers.

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Mountjoy M, Ackerman KE, Bailey Det al. 2023 International Olympic Committee’s (IOC) consensus statement on Relative Energy Deficiency in Sport (REDs) British Journal of Sports Medicine 2023;57:1073-1097.

Mountjoy M, Ackerman KE, Bailey Det al. Avoiding the ‘REDs Card’. We all have a role in the mitigation of REDs in athletes British Journal of Sports Medicine 2023;57:1063-1064.

Pensgaard AM, Sundgot-Borgen J, Edwards Cet al. Intersection of mental health issues and Relative Energy Deficiency in Sport (REDs): a narrative review by a subgroup of the IOC consensus on REDs British Journal of Sports Medicine 2023;57:1127-1135.

Stellingwerff T, Mountjoy M, McCluskey Wet al. Review of the scientific rationale, development and validation of the International Olympic Committee Relative Energy Deficiency in Sport Clinical Assessment Tool: V.2 (IOC REDs CAT2)—by a subgroup of the IOC consensus on REDs British Journal of Sports Medicine 2023;57:1109-1118.

International Olympic Committee relative energy deficiency in sport clinical assessment tool 2 (IOC REDs CAT2) British Journal of Sports Medicine 2023;57:1068-1072.

Shirley M, Longman D, Elliott-Sale K et al. A Life History Perspective on Athletes with Low Energy Availability. Sports Med 2022 52, 1223–1234. https://doi.org/10.1007/s40279-022-01643-w

Todd E, Elliot N, Keay N. Relative energy deficiency in sport (RED-S) British Journal of General Practice 2022; 72 (719): 295-297. DOI: https://doi.org/10.3399/bjgp22X719777

Torstveit M, Ackerman K, Constantini N et al. Primary, secondary and tertiary prevention of Relative Energy Deficiency in Sport (REDs): a narrative review by a subgroup of the IOC consensus on REDs Br J Sports Med 2023;57:1119–1126.

“Sleep is the chief nourisher in life’s great feast”

Macbeth, Shakespeare

At the start of every year there is always a lot of talk about refraining from certain activities like drinking alcohol, advice about eating a particular way, or recommendations to do certain types/amount of exercise. Trends in these lifestyle choices may come and go, but there is one behaviour that remains constant to achieve optimal health. Sleep.

In my book “Hormones, Health and Human Potential: A guide to understanding your hormones to optimise your health and performance” I discuss how our lifestyle choices and behaviours around sleep, exercise and nutrition influence hormone networks and consequently our health.

Illustration from “Hormones, Health and Human Potential”

Sleep for hormone health

Why is sleep such an essential component for health? Although being asleep is a physical state of inactivity, it is when many hormone networks are at their most active. For example, one of the main stimuli for growth hormone (GH) release is sleep. Despite its name, GH is not just about growth in children. All adults continue to produce GH and this is an important anabolic (tissue building) hormone. GH maintains a healthy body composition: favouring muscle over fat deposition. GH also plays a role in bone health.

Sleep for fitness

Another stimulus for GH release is exercise. However, you don’t get fitter in real time while you exercise. You get fitter when you are asleep. After stopping exercise and during sleep these two combined stimuli for GH release drive the positive adaptations to exercise. Sleep enables you to become citius, altius, fortius. 

Sleep for sex steroid hormone networks

Sleep is also essential for other hormone networks, such as those of the reproductive axis, in both men and women. Studies show that men who have reduced sleep tend to have lower levels of testosterone and poorer bone health. Essentially if you do not have sufficient quality and quantity of sleep this has a negative effect on many aspects of both physical and mental health.

Sleep for metabolic health

Hormones that control appetite and satiety are linked with the sleep/wake cycle. People who have disrupted sleep patterns are more likely to struggle with blood glucose and weight control.

Timing of sleep

The timing of sleep is also important. Hormone networks run on a variety of internal biological clocks, known as biochronometers. The trick is to try and synchronise the timing of your behaviours with these internal biochronometers. If you have an “scheduling conflict” between external and internal clocks, this leads to a situation of circadian misalignment. Circadian misalignment can lead to many adverse consequences on mental and physical health, including metabolic and cardiovascular health. This negative combination can lead to metabolic syndrome which increases the risk of type 2 diabetes mellitus, cardiovascular disease and high blood pressure.

Consequences of disrupted sleep patterns

Shift workers, for example junior doctors, are at risk of developing circadian misalignment. Disrupted sleep patterns, clashing with internal hormone timing becomes a vicious circle. Poor sleep interferes with the diurnal variation of cortisol, which peaks as an awakening response. Disruption of this cortisol awakening response can disrupt subsequent night sleeping.

A degree of circadian entrainment is possible. In other words, our hormone clocks can adapt to slight changes in sleeping patterns. For example, getting up early for exercise training. It is also possible to reset internal biological clocks, as we do after a long-haul flight. This is because in our brain we have a biological light sensor which has direct communication with the manager of the hormone orchestra, conveniently situated in very close proximity in the brain. The timing of daily hormone release can be reset to correspond with local night and day timing. This contrasts to the situation of doing shift work, where you are continuously in conflict with night/day timing and internal hormone clocks.

Top tips for sleep to optimise hormone health

So, if there is one behaviour that you are going to improve this year, it should be sleep.  

Sleep hygiene is the term used to cover strategies to ensure a good night’s sleep. One of the tops tips is to try and go to bed at a regular time, before midnight. A recent study shows that is these hours before midnight that are particularly valuable for hormone health. In fact, it is useful to set an alarm for going to bed.

Another strategy to help sleep is finding a bedtime “wind down” routine that suits you. For example, reading or listening to music. Looking at mobile electronic devices is not one of these. The reason being that the light emitted from these devices prevents the production of the sleep hormone melatonin.

When it comes to hormone health, sleep is indeed the chief nourisher. Sleep and other lifestyle choices to harness hormones for optimal health, through life, are explored in detail in “Hormones, Health and Human Potential: A guide to understanding your hormones to optimise your health and performance”.

Next steps

“Hormones, Health and Human Potential: A guide to understanding your hormones to optimise your health and performance” is available in paperback and Kindle (illustrations in colour) from Amazon and direct from Sequoia books (ship overseas)

Hormone Health advisory appointments are available

Presentations and workshops

Raising Awareness of RED-S in Male and Female Athletes and Dancers

Health4Performance is a recently developed BASEM open access educational resource

This is a world premier: a resource developed for and by athletes/dancers, coaches/teachers, parents/friends and healthcare professionals to raise awareness of Relative Energy Deficiency in Sport (RED-S)

What?

Optimal health is required to attain full athletic potential. Low energy availability (LEA) can compromise health and therefore impair athletic performance as described in the RED-S clinical model.

Dietary energy intake needs to be sufficient to cover the energy demands of both exercise training and fundamental physiological function required to maintain health. Once the energy demands for training have been covered, the energy left for baseline “housekeeping” physiological function is referred to as energy availability (EA). EA is expressed relative to fat free mass (FFM) in KCal/Kg FFM.  The exact value of EA to maintain health will vary between genders and individuals, roughly equivalent to resting metabolic rate of the individual athlete/dancer. LEA for an athlete or dancer will result in the body going into “energy saving mode” which has knock on effects for many interrelated body systems, including readjustment to lower the resting metabolic rate in the longer term. So although loss in body weight may be an initial sign, body weight can be steady in chronic LEA due to physiological energy conservation adaptations. Homeostasis through internal biological feedback loops in action.

The most obvious clinical sign of this state of LEA in women is cessation of menstruation (amenorrhea). LEA as a cause of amenorrhoea is an example of functional hypothalamic amenorrhoea (FHA). In other words, amenorrhoea arising as a result of an imbalance in training load and nutrition, rather than an underlying medical condition per se, which should be excluded before arriving at a diagnosis of FHA. All women of reproductive age, however much exercise is being undertaken, should have regular menstrual cycles, which is indicative of healthy hormones. This explains why LEA was first described as the underlying aetiology of the female athlete triad, as women in LEA display an obvious clinical sign of menstrual disruption. The female athlete triad is a clinical spectrum describing varying degrees of menstrual dysfunction, disordered nutrition and bone mineral density. However it became apparent that the clinical outcomes of LEA are not limited to females, nor female reproductive function and bone health in female exercisers. Hence the evolution of the clinical model of RED-S to describe the consequences of LEA on a broader range of body systems and including male athletes.

A situation of LEA in athletes and dancers can arise unintentionally or intentionally. In the diagram below the central column shows that an athlete where energy intake is sufficient to cover the demands from training and to cover basic physiological function. However in the column on the left, although training load has remained constant, nutritional intake has been reduced. This reduction of energy intake could be an intentional strategy to reduce body weight or change body composition in weight sensitive sports and dance.  On the other hand in the column on the right, training load and hence energy demand to cover this has increased, but has not been matched by an increase in dietary intake. In both these situations, whether unintentional or intentional, the net results is LEA, insufficient to maintain health. This situation of LEA will also ultimately impact on athletic performance as optimal health is necessary to realise full athletic potential.

Slide1

Although LEA is the underlying aetiology of RED-S, there are many methodological and financial issues measuring LEA accurately in “free living athletes“. In any case, the physiological response varies between individuals and depends on the magnitude, duration and timing of LEA. Therefore it is more informative to measure the functional responses of an individual to LEA, rather than the value calculated for EA. As such, Endocrine markers provide objective and quantifiable measures of physiological responses to EA. These markers also reflect the temporal dimension of LEA; whether acute or chronic. In short, as hormones exert network effects, Endocrine markers reflect the response of multiple systems in an individual to LEA. So by measuring these key markers, alongside taking a sport specific medical history, provides the information to build a detailed picture of EA for the individual, with dimensions of time and magnitude of LEA. This information empowers the athlete/dancer to modify the 3 key factors under their control of training load, nutrition and recovery to optimise their health and athletic performance.

Slide1

Why?

Who is at risk of developing RED-S? Any athlete involved in sports or dance where being light weight confers a performance or aesthetic advantage. This is not restricted to elite athletes and dancers. Indeed the aspiring amateur or exerciser could be more at risk, without the benefit of a support team present at professional level. Young athletes are at particular risk during an already high energy demand state of growth and development. Therefore early identification of athletes and dancers at risk of LEA is key to prevention of development of the health and performance consequences outlined in the RED-S clinical model. Although there is a questionnaire available for screening for female athletes at risk of LEA, more research is emerging for effective and practical methods which are sport specific and include male athletes.

How?

Early medical input is important as RED-S is diagnosis of exclusion. In other words medical conditions per se need to be ruled out before arriving at a diagnosis of RED-S.  Prompt medical review is often dependent on other healthcare professionals, fellow athletes/dancers, coaches/teachers and parents/friends all being aware and therefore alert to RED-S. With this in mind, the Health4Performance website has areas for all of those potentially involved,  with tailored comments on What to look out for? What to do? Ultimately a team approach and collaboration between all these groups is important. Not only in identification of those at risk of LEA, but in an integrated support network for the athlete/dancer to return to optimal health and performance.

References

Heath4Performance BASEM Educational Resource

Video introduction to Health4Performance website

2018 UPDATE: Relative Energy Deficiency in Sport (RED-S) BJSM 2018

What is Dance Medicine? BJSM 2018

Identification and management of RED-S Podcast 2018

Low energy availability assessed by a sport-specific questionnaire and clinical interview indicative of bone health, endocrine profile and cycling performance in competitive male cyclists Keay, Francis, Hind. BJM Open Sport and Exercise Medicine 2018

How to Identify Male Cyclists at Risk of RED-S? 2018

Pitfalls of Conducting and Interpreting Estimates of Energy Availability in Free-Living Athletes IJSNM 2018

Low Energy Availability Is Difficult to Assess but Outcomes Have Large Impact on Bone Injury Rates in Elite Distance Athletes IJSNM 2017

The LEAF questionnaire: a screening tool for the identification of female athletes at risk for the female athlete triad BJSM 2013

IOC consensus statement on relative energy deficiency in sport (RED-S): 2018 update BJSM 2018

What is Dance Medicine?

Traditionally dance medicine has been somewhat the poor relation of sports medicine. Why is this the case? There is no doubt that dancers, of whatever genre, require the physical and psychological attributes of athletes. However, dance involves an additional artistic component where ultimately performance on stage is judged not according to a score card as in aesthetic sports, rather on the ability of the dancers to forge an emotional connection with the audience.

As with athletes, injuries are always an important topic for dancers: how to recognise the aetiology of injuries and thus develop prevention strategies. Dance UK have published two reports on national enquiries into the health of dancers. Dance UK has now evolved into the organisation One Dance which includes the National Institute of Dance Medicine and Science (NIDMS). One Dance provides delivery of the Healthier Dancer Programme (HDP) whose talks regularly engage 1500+ dancers and dance professionals per year and which will be a part of the One Dance UK conference at the end of November, an overarching event for the entire dance sector. One Dance holds a list of healthcare professionals with experience and expertise in dance. One Dance is an especially an important resource for independent dancers who will not have access to the provision for those working in larger dance companies.

However, beyond injury management, there are important aspects of the health of dancers which need to be considered, highlighted in an information booklet “Your body, Your risk” from Dance UK. The female athlete triad is well established as a clinical spectrum comprising of disordered eating, menstrual dysfunction and impaired bone health. Indeed impaired bone mineral density many persist even after retirement in female dancers. The recent evolution of the female athlete triad into relative energy deficiency in sports (RED-S) provides an important clinical model. RED-S includes male athletes/dancers, involves multiple body systems and crucially, evidence of detrimental effects on athletic performance is being researched and described. In other words RED-S is not restricted to female dancers/athletes with bone stress injuries.

BalletDials
Integrated periodisation of training, nutrition and recovery support perforamnce

The fundamental cause of RED-S is low energy availability where nutritional intake is insufficient to cover energy requirements for training and resting metabolic rate. In this situation the body goes into energy saving mode, which includes shut down of many hypothalamic-pituitary axes and hence endocrine network dysfunction. As hormones are crucial to backing up adaptations to exercise training, dysfunction will therefore have an effect not just on health, but on athletic performance. In dance, neuromuscular skills and proprioception are key for performance. Hence, of concern is that these skills are adversely impacted in functional hypothalamic amenorrhoea, which together with impaired bone health from RED-S, greatly increases injury risk.

Low energy availability can arise in dance and sport where low body weight confers an aesthetic and/or performance advantage. There is no doubt that being light body weight facilitates pointe work in female dancers and ease of elevation in male dancers. Thus, low energy availability can occur intentionally in an effort to achieve and maintain low body weight. Low energy availability can also be unintentional as a result of increased expenditure from training, rehearsal and performance demands and the practicality of fuelling. This situation is of particular concern for young dancers in training, as this represents a high energy demand state, not just for full time training, additionally in terms of energy demands for growth and development, including attainment of peak bone mass.

Despite the significance of RED-S in terms of negative consequences on health and performance, as outlined by the IOC in the recent consensus update, further work is required in terms of raising awareness, identification and prevention. Fortunately these issues are being addressed with the development of an online educational resource on RED-S for athletes/dancers, their coaches/teachers/parents and healthcare professionals which is backed by British Association of Sport and Exercise Medicine (BASEM) and with input from One Dance and NIDMS. In terms of research to facilitate the proliferation of evidence base in dance medicine, One Dance lists calls for research, whilst NHS NIDMS clinics provide access to clinical dance medicine. The importance of the application of this growing field of dance medicine and science for the health and performance of dancers was recently outlined in an article “Raising the barre: how science is saving ballet dancers“.

On the international stage, the International Association for Dance Medicine & Science (IADMS) strives to promote an international network of communication between dance and medicine. To this end, IADMS will hold its 28th Annual Conference in Helsinki, Finland from October 25-28, 2018. In addition to extensive discussion of dance injuries, there will be presentations on “Sleep and Performance” and “Dance Endocrinology”.

So maybe Dance Medicine and Science is not so much the poor relation of Sports Medicine, rather showing the way in terms of integrating input between dancers, teachers and healthcare professionals to optimise the health of dancers and so enable dancers to perform their full potential.

References

Presentations

Fit to Dance? Report of National inquiry into dancers’ health.

Fit to Dance 2 Dance UK

One Dance

Your body your risk. Dance UK

Fit but fragile. National Osteoporosis Society

Bone mineral density in professional female dancers N. Keay, BJSM

2018 UPDATE: Relative Energy Deficiency in Sport (RED-S) Dr N Keay BJSM 2018

Reduced Neuromuscular Performance in Amenorrheic Elite Endurance Athletes Medicine and Science in Sports & Exercise 2017

Dancing through Adolescence Dr N Keay BJSM

Healthy Hormones Dr N Keay BASEM 2018

Dancers, Periods and Osteoporosis, Keay N, Dancers, Periods and Osteoporosis, Dancing Times, September 1995, 1187-1189

A study of Dancers, Periods and Osteoporosis, Keay N, Dance Gazette, Issue 3, 1996, 47

Raising the barre: how science is saving ballet dancers The Guardian 2018

International Association for Dance Medicine and Science Medicine & Science in Sports and Exercise

 

 

Synergistic Interactions of Steroid Hormones

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The action of the sun on skin is the most effective way of making vitamin D. However, even walking around outside naked for 5 hours every day during UK winter months is not sufficient to make adequate vitamin D. Therefore, much to the relief of the audience at the recent BASEM Spring conference, this was not a strategy recommended by Dr Roger Wolman.

Vitamin D is a fat soluble steroid hormone. The majority of which is synthesised in the skin when exposed to ultraviolet B in sunlight, with a small contribution from dietary sources: this vitamin D3 molecule is then hydroxylated twice in the liver and then kidney to produce the metabolically active form of vitamin D. This activated steroid hormone binds to vitamin D receptors in various tissues to exert its influence on gene expression in these cells. The mono hydroxylated form of vitamin D is measured in the serum, as this has a long half life.

Does it matter having low levels of circulating vitamin D during winter months? What are the solutions if moving to warmer climates during the winter is (unfortunately) not feasible? What are the other hormones interact with vitamin D?

What are the beneficial effects of vitamin D, particularly in the athletic population?

Bone

Rickets and osteomalacia are conditions where vitamin D deficiency results in bone deformities and radiographic appearances are characterised by Looser zones, which in some ways are similar in appearance to stress fractures.

In a large prospective study of physically active adolescent girls, stress fracture incidence was found to have an inverse relationship with serum vitamin D concentrations. In adult female Navy recruits monitored during an 8 week training programme, those on vitamin D supplementation had a 20% reduction in stress fracture. However, oestrogen status was a more powerful risk factor at 91% in those recruits reporting amenorrhoea. Vitamin D is, itself, is a steroid hormone with range of systemic effects. As will be discussed below, its interaction with the sex steroid oestrogen has an important effect on bone turnover.

Immunity

Although sanatoriums, for those suffering with tuberculosis, were based on providing patients with fresh air, any beneficial effect was probably more due to vitamin D levels being boosted by exposure to sunlight. Certainly there are studies demonstrating the inhibitory effect of vitamin D on on slow growing mycobacteria, responsible for TB. What about the influence of vitamin D on other types of infection? In a recent publication, evidence was presented that supplementation with vitamin D prevented acute respiratory tract infections. This effect was marked in those with pre-existing low levels of vitamin D. In a study of athletes a concentration of 95 nmol/L was noted at the cut off point associated with more or less than one episode of illness. In another randomised controlled study of athletes, those supplemented with 5,000IU per day of vitamin D3 during winter displayed higher levels of serum vitamin D and had increased secretion of salivary IgA, which could improve immunity to respiratory infections.

Muscle

There is evidence that supplementing vitamin D3 at 4,000IU per day has a positive effect on skeletal muscle recovery in terms of repair and remodelling following a bout of eccentric exercise. In the longer term, dancers supplemented with 2,000IU over 4 months reported not only reduction in soft tissue injury, but an increase in quadriceps isometric strength of 18% and an increase of 7% in vertical jump height.

Synergistic actions of steroid hormones

No hormone can be considered in isolation. This is true for the network interaction effects between the steroid hormones vitamin D and oestrogen. In a study of professional dancers, there was found to be significant differences in serum vitamin D concentrations in dancers from winter to summer and associated reciprocal relationship with parathyroid hormone (PTH). In situations of vitamin D deficiency this can invoke secondary hypoparathyroidism. Although low levels of vitamin D were observed in the dancers, this was not a level to produce this condition. However, there was an increase in soft tissue injury during the winter months that could, in part, be linked to low vitamin D levels impacting muscle strength.

The novel finding of this study was that female dancers on the combined oral contraceptive pill  (OCP) showed significant differences, relative to their eumenorrhoeic counterparts not on the OCP, in terms of higher levels of vitamin D and associated reductions of bone resorption markers and PTH. The potential mechanism could be the induction by the OCP of liver enzymes to increase binding proteins that alter the proportion of bound/bioactive vitamin D.

This interaction between steroid hormones oestrogen and vitamin D could be particularly significant in those in low oestrogen states such as postmenpoausal women and premenarchal girls. Menarche can be delayed in athletes, so is there a case for vitamin D supplementation in young non-menstruating athletes? What is the situation for men? Do testosterone and vitamin D have similar interactions and therefore implications for male athletes with RED-S, where testosterone can be low?

Vitamin D is not simply a vitamin. It is a steroid hormone with multi-system effects and interactions with other steroid hormones, such as sex steroids, which are of particular relevance to athletes.

References

BASEM Spring Conference 2018 “Health, Hormones and Human Performance”

BASEM Spring Conference 2018 Part 2 “Health, Hormones and Human Performance”

Calcium and Vitamin D Supplementation Decreases Incidence of Stress Fractures in Female Navy Recruits JBMR 2009

Vitamin D, Calcium, and Dairy Intakes and Stress Fractures Among Female Adolescents Arch Pediatr Adolesc Med 2012

A Single Dose of Vitamin D Enhances Immunity to Mycobacteria American Journal of Respiratory and Critical Care Medicine 2007

Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data BMJ 2017

Influence of vitamin D status on respiratory infection incidence and immune function during 4 months of winter training in endurance sport athletes Exerc Immunol Rev. 2013

The effect of 14 weeks of vitamin D3 supplementation on antimicrobial peptides and proteins in athletes J Sports Sci. 2016

A systems-based investigation into vitamin D and skeletal muscle repair, regeneration, and hypertrophy American Journal of Physiology 2015

The influence of winter vitamin D supplementation on muscle function and injury occurrence in elite ballet dancers: A controlled study Journal of Science and Medicine in Sport 2014

Vitamin D status in professional ballet dancers: Winter vs. summer J Science and Medicine in Sport 2013

Health, Hormones and Human Performance Part 2

Endocrine and Metabolic aspects of Sports and Exercise Medicine are crucial determinants of health and human performance, from reluctant exerciser through to elite athlete and professional dancer. This is what the recent BASEM spring conference set out to demonstrate. The previous blog described functional disruption of Endocrine networks caused by non-integrated periodisation of the three key lifestyle factors of exercise/training, nutrition and recovery/sleep, can lead to adverse effects on health and athletic performance.

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Integrated periodisation of exercise, nutrition, recovery for optimisation of health and performance (Keay BJSM 2017)

Grace, aesthetic line and ethereal quality belie the athletic prowess required in ballet. What are the Endocrine, metabolic and bone health consequences for this unique group of athletes? Dr Roger Wolman (Medical Advisor to National Institute for Dance Medicine and Science) returned to the important topic of insufficient energy availability in sport/dance where being lightweight confers a performance advantage, resulting in dysfunction in multiple endocrine axes. Dr Wolman discussed his recent research studies in dancers revealing an intriguing synergistic action between oestrogen and vitamin D, which is itself a steroid hormone. Evidence was presented to demonstrate how being replete in vitamin D has beneficial effects on bone, immunity and muscle function. Thus it is key in preventing injury and supporting health in athletes, with particular relevance in premenarchal and postmenopausal women, who are in relative oestrogen deficient states. This presentation will certainly change my clinical practice and, I am sure, that of many in the audience, in ensuring that athletes/patients are vitamin D replete. This may have to be achieved in the form of strategic use of sports informed vitamin D supplementation, given that even walking naked for 5 hours a day outside during UK winter, would not stimulate enough vitamin D production. Therefore, to the relief of many in the audience, Dr Wolman did not recommend this strategy.

Dr Kate Ackerman (member of RED-S IOC working group) explained why we should all tap into our inner endocrinologist. Sport and Exercise Medicine (SEM) goes far beyond diagnosing and treating injury. Is there any underlying endocrine cause for suboptimal health, performance or injury? Be this an endocrine diagnosis that should not be missed, or a functional endocrine dysfunction due to relative energy deficiency in sports (RED-S). Dr Ackerman explained the importance of the multidisciplinary team in both identifying and supporting an athlete experiencing the consequences of RED-S. New research from Dr Ackerman’s group was presented indicating the effects of RED-S on both health and athletic performance.

Females now have combative roles alongside their male counterparts. What are the implications of this type of intensive exercise training? Dr Julie Greaves (Research Director of the ministerial women in ground close combat research programme) presented insightful research revealing that differences in the geometry of bone in men and women can predispose towards bone stress injury and account for increased incidence in this type of injury in female recruits.

Lunchtime discussion and debate was focused on the determinants of athletic gender, lead by Dr Joanna Harper and Professor Yannis Pitsiladis (International Federation of Sports Medicine). Rather than relying on genetic sex, testosterone concentration was proposed as the criteria for determining whether an athlete competes in male or female events. That testosterone concentration is linked to performance was demonstrated in a study published last year in the BMJ where female athletes in the upper tertile of testosterone were shown to have a performance advantage in certain strength based track and field disciplines. This could potentially be an objective, functional metric used to determine sporting categories for transgender and intersex athletes. The only current uncertainty is how previously high levels of testosterone seen in male, or intersex athletes would have already had an impact on physiology, if this athlete then wished to compete as female and therefore lower testosterone levels with medication.

Nutrition is a key component in optimising health and performance through the Endocrine system. Dr Sophie Killer (English Institute of Sport) explained practical implications for athletes. In a study stimulating a training camp, there were distinct differences between athletes on different regimes of carbohydrate intake in terms of endocrine markers and psychological effects. Those athletes on restricted carbohydrate intake fared worse.

Insulin insensitivity is the underlying pathological process in developing type 2 diabetes mellitus (T2DM) and metabolic syndrome. What is the crucial lifestyle intervention to combat this? Dr Richard Bracken (Swansea University) presented the science behind why and how exercise improves blood glucose control and therefore ultimately risk of developing the macro and microvascular complications of diabetes. T2DM is an increasing health issue in the population, which has to be addressed beyond reaching for the prescription pad for medication. Dr Bracken outlined some effective strategies to encourage the reluctant exerciser to become more active. Having worked myself in NHS diabetic clinics over many years, this was a key presentation at the conference to demonstrate that SEM goes far beyond a relatively small group of elite athletes. Highlighting the crucial role of physical activity in supporting health and performance through optimisation of endocrine networks: uniting the elite athlete and the reluctant exerciser.

One road to Rome
One Road to Rome (BJSM Keay 2017)

Motivate2Move initiative aims to shift the emphasis from treating disease, to preventing disease. Dr Brian Johnson presented the excellent resource for healthcare professionals to encourage, motivate and educate patients in order to consider exercise as an effective and enjoyable way to improve health.

Hormones play a key role in health and human performance, applicable to all levels of exerciser from reluctant exerciser to elite athlete.

FactorsWordCloud4

References

Health, Hormones and Human Performance BASEM Spring Conference

Video of presentation on Endocrine and Metabolic aspects of Sport and Exercise Medicine from BASEM Spring Conference

Sports Endocrinology – what does it have to do with performance? Keay BJSM 2017

Lifestyle Choices for optimising health: exercise, nutrition, sleep Keay BJSM 2017

One road to Rome: Exercise Keay, BJSM 2017

 

 

Health, Hormones and Human Performance Part 1

How hormones determine health and athletic performance

Endocrine and Metabolic aspects of Sports and Exercise Medicine are crucial determinants of health and human performance, from reluctant exerciser through to elite athlete and professional dancer. This is what I set out to demonstrate as the chair of the recent British Association of Sport and Medicine conference, with insightful presentations from my colleagues whom I had invited to share their research and practical applications of their work. The audience comprised of doctors with interest in sport and exercise medicine, representatives from the dance world, research scientists, nutritionists, physiotherapists, coaches and trainers. In short, all were members of multi-disciplinary teams supporting aspiring athletes. The importance of the conference was reflected in CDP awards from FSEM, BASES, Royal College of Physicians (RCP), REP-S and endorsement for international education from BJSM and National Institute of Dance Medicine and Science (NIDMS).

Exercise is a crucial lifestyle factor in determining health and disease. Yet we see an increasing polarisation in the amount of exercise taken across the general population. At one end of the spectrum, the increasing training loads of elite athletes and professional dancers push the levels of human performance to greater heights. On the other side of the spectrum, rising levels of inactivity, in large swathes of the population, increase the risk of poor health and developing disease states. Which fundamental biological processes and systems link these groups with apparently dichotomous levels of exercise? What determines the outcome of the underlying Endocrine and metabolic network interactions? How can an understanding of these factors help prevent sports injuries and lead to more effective rehabilitation? How can we employ Endocrine markers to predict and provide guidance towards beneficial outcomes for health and human performance?

If you weren’t able to come and participate in the discussion, these are some topics presented. My opening presentation (see video below) set the scene, outlining why having an optimally functioning Endocrine system is fundamental to health and performance. Conversely, functional disruption of Endocrine networks occurs with non integrated periodisation of the three key lifestyle factors of exercise/training, nutrition and recovery/sleep, which can lead to adverse effects on health and athletic performance.

In the case of an imbalance in training load and nutrition, this can manifest as the female athlete triad, which has now evolved into relative energy deficiency in sports (RED-S) in recognition of the fact that Endocrine feedback loops are disrupted across many hormonal axes, not just the reproductive axis. And, significantly, acknowledging the fact that males athletes can also be impacted by insufficient energy availability to meet both training and “housekeeping” energy requirements. Why and how RED-S can affect male athletes, in particular male competitive road cyclists, was discussed, highlighting the need for further research to investigate practical and effective strategies to optimise health and therefore ultimately performance in competition.

A degree of overlap and interplay exists between RED-S (imbalance in nutrition and training load), non functional over-reaching and over-training syndrome (imbalances in training load and recovery). Indeed research evidence was presented suggesting that RED-S increases the risk of developing over-training syndrome. In these situations of functional disruption of the Endocrine networks, underlying Endocrine conditions per se should be excluded. Case studies demonstrated this principle in the diagnosis of RED-S. This is particularly important in the investigation of amenorrhoea. All women of reproductive age, whether athletes or not, should have regular menstruation (apart from when pregnant!), as a barometer of healthy hormones. Indeed, since hormones are essential to drive positive adaptations to exercise, healthy hormones are key in attaining full athletic potential in any athlete/dancer, whether male or female. Evidence was presented from research studies for the role of validated Endocrine markers and clinical menstrual status in females as objective and quantifiable measures of energy availability and hence injury risk in both male and female athletes.

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Triumvirate of external factors impacting Endocrine system and hence performance

Alongside training metrics, if female athletes recorded menstrual pattern (as Gwen Jorgensen recently showed on her Training Peaks) and all athletes kept a biological passport of selected Endocrine markers; this could potentially identify at an early stage any imbalances in the triumvirate of training load, nutrition and recovery. Pre-empting development of RED-S or over-training syndrome, supports the maintenance of healthy hormones and hence optimal human performance.

Look out for presentations from speakers which will be uploaded on BASEM website shortly.

References

Video of presentation on the Endocrine and Metabolic Aspects of Sports and Exercise Medicine BASEM conference “Health, Hormones and Human Performance”

Study of hormones, body composition, bone mineral density and performance in competitive male road cyclists Investigation of effective and practical nutrition and off bike exercise interventions

Sports Endocrinology – what does it have to do with performance? Keay BJSM 2017

 

 

 

Male Cyclists: Bones, Body composition, Nutrition, Performance

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There has been much recent coverage regarding female runners suffering with health and performance issues due to relative energy deficiency in sports (RED-S). What about male athletes? A recent article about male cyclists who explained how they developed RED-S, did not receive as sympathetic a response as articles concerning female athletes. Yet multiple Endocrine network disruption in RED-S, associated with suboptimal health and performance, is equally applicable to male and female athletes.

Although competitive road cycling is excellent for cardiovascular (CV) fitness, why are male cyclists at particular risk of impaired bone health and RED-S? Cycling is a non-weight bearing type of exercise, as is swimming, so does not provide much osteogenic (bone building) stimulus. The additional element in road cycling is that, in the short term, low body weight, with associated low body fat, confers a performance advantage. However this can lead to restrictive nutrition and RED-S, that have adverse effects on health and performance, over the longer term.

A recent study looking at bone acquisition in adolescent males found that bone mass, microarchitecture and makers of bone formation were more favourable in footballers compared with cyclists and swimmers. Swimmers had the lowest Vitamin D, presumably as this is generally an indoor sport (unless you live in Australia where outdoor 50m pools abound). Another study found reduction in femoral neck bone mineral accumulation in adolescent male cyclists compared against increases over the same time frame seen in controls.

What about adult male road cyclists? When runners and cyclists were matched for age and body weight, there were no significant differences in hormone or nutrition status, yet cyclists were 7 times more likely to have osteopenia of the lumbar spine than runners. Similar results were found in another study where competitive male road cyclists were found to have reduced lumbar spine bone mineral density (BMD) for age, despite normal levels of testosterone and insulin-like growth factor 1 (IGF1), although intriguingly an inverse correlation with lumbar spine BMD and IGF1 was found. It appears that the biomechanical stress patterns on the spine in cycling are not oesteogenic in nature, which contrasts with rowing where, although also seated, the biomechanical load exerted through the spine does provide an osteogenic effect.

In addition to the non-load bearing nature of cycling on the skeleton, restrictive nutrition can contribute to suboptimal bone health. Reducing energy availability by restricting energy intake whilst increasing training load can be a strategy, especially during pre-season training to reduce body weight and body fat. Essentially, cycling up a steep incline demands less power through the pedals if your body weight is low. Nevertheless, reducing energy availability runs the risk of developing RED-S, associated Endocrine dysfunction and suboptimal bone health, on top of the non-beneficial mechanical osteogenic effect of cycling. On a practical note, with long training rides in the saddle it can be physically and practically difficult to fuel optimally. Recent research in female athletes shows that within day energy deficits magnify hormonal disruption. Could this be a factor in male cyclists where consistent fuelling is either actively avoided and/or practically difficult?

The psychological element of disordered eating has been described amongst elite male cyclists. Male cyclists, in particular, collect many metrics associated with training and racing which could be a manifestation of a drive to perfectionism. Determination and attention to detail are laudable qualities for athletes, but there is a fine line when the balance swings to behaviours and attitudes that can be detrimental to health and performance. Even starting off with good intentions can lead to problems as seen with the growing emergence of orthorexia: “clean eating”, which, ironically, becomes detrimental to health and performance with exclusion of food groups such as carbohydrates.

Exclusively practising a non weight bearing sport such as cycling although great for CV fitness, is not so good for bone health. Does this matter? Potentially injury is more likely in bike spills, which occur both in training and competition even for the most experienced bike handler. Combined with the drive for low body weight in competitive road cycling, health and performance issues can be compounded with RED-S. What are the solutions for the cyclist to support favourable body composition and bone health, which ultimately also optimises performance? A further planned study, following a current pilot study of competitive road cyclists, aims to investigate the potential beneficial effects of strength and conditioning to load the skeleton combined with a review of nutrition. See details of next study to see if you wish to participate.

For more discussion on the Endocrine aspects of Sports and Exercise Science and Medicine, BASEM Spring conference 22 March 

References

Cumulative Endocrine Dysfunction in Relative Energy Deficiency in Sport (RED-S)

Too healthy to ride? How clean living could slow you down Cycling Weekly 2017

Body Composition for Health and Sports Performance

Longitudinal Adaptations of Bone Mass, Geometry, and Metabolism in Adolescent Male Athletes: The PRO-BONE Study JBMR 2017

Bone Related Health Status in Adolescent Cyclists Plos 2011

Participation in road cycling vs running is associated with lower bone mineral density in men Metabolism 2008

Evaluation of the Bone Status in High-Level Cyclists Journal of Clinical Densitometry 2012

Effect of exercise training programme on bone mineral density in novice college rowers BJSM 1995

Energy Intake and Energy Expenditure of Elite Cyclists During Preseason Training Int J Sports Med 2005
Kings and Queens of the Mountains Science4Performance 2017

Cumulative Endocrine Dysfunction in Relative Energy Deficiency in Sport (RED-S)

Perfectionism and Risk for Disordered Eating among Young French Male Cyclists of High Performance Perceptual and Motor Skills 2004

Kings and Queens of the Mountains Science4Performance 2017

Addiction to Exercise – what distinguishes a healthy level of commitment from exercise addiction? BJSM 2017

Optimal Health: For All Athletes! Part 4 – Mechanisms BASEM 2017

Conferences in Sport/Dance, Exercise Science and Medicine 2018

Conferences for the New Year:

BAsem2018_SpringConf_BJSM

If you are interested in any aspects of Sport/Dance, Exercise and Lifestyle Medicine here are some suggestions:

British Association of Sport and Exercise Medicine Spring Conference 22 March 2018 “Health, Hormones and Human Performance” Covering the Endocrine and Metabolic aspects of Sport, Dance, Exercise Science and Medicine. From the elite athlete to the reluctant exerciser. Aimed at all those members of the multidisciplinary team working with athletes/dancers, plus athletes/dancers and their coaches/teachers.

CPD points awarded from Faculty of Sports and Exercise Medicine FSEM

BASES British Association of Sport and Exercise Sciences CPD awarded

British Journal of Sports Medicine Quality International Education Approved

CPD points from Royal College of Physicians

CPD from REP-S

 

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Why? The balance and timing of exercise, nutrition and recovery is key to optimising health and all aspects of human performance. Intricate network interactions between the Endocrine system and metabolic signalling pathways drive these positive adaptations. However, non-integration of these lifestyle factors can disrupt signalling feedback pathways and predispose to maladaptation and potentially disease states.

What? Discussion, led by experienced clinicians and researchers will cover:

· Key role of Sports Endocrinology in health and performance

· Effects of exercise modalities on body composition and bone health

· Machine learning in interpreting biochemical & metabolomic patterns

· Endocrine & metabolic markers in assessing health & training status

· Gut metabolism in supporting health and performance

· Exercise as crucial lifestyle factor in pre-existing metabolic dysfunction

Who? This conference is relevant to all members of multidisciplinary teams supporting both reluctant exercisers and elite athletes. Medics, researchers, physiologists, physiotherapists, nutritionists, psychologists, coaches, athletes. All welcome.

Health, Hormones and Human Performance will be a conference of interest to all those involved with aspiring and elite athletes, including dancers (National Institute of Dance Medicine and Science NIDMS) and those supporting reluctant exercisers through Lifestyle Medicine.

Latest news from BASEM. Interview with BASEM Today Issue 41 – Winter 2017

 

Wales Exercise Medicine Symposium by Cardiff Sports & Exercise Medicine Society 27/1/18. This includes Dr Peter Brukner, founder of the Olympic Sports Medicine Park in Melbourne, and an afternoon session discussing the female athlete through the lifespan. CPD points applied for from the Royal College of Physicians, the Faculty of Sports and Exercise Medicine, REPs and the Royal College Of General Practitioners.

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Women in Sport and Exercise Conference 2018  13-14 June Organised by The Women in Sport and Exercise Academic Network and attracting British Association of Sport and Exercise Sciences (BASES) CPD points.

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