Top UK Sprinter Looking For The Performance Edge Relaxes And Learns To Sleep

Preparing for competition athletes focus heavily on physical training, some also focus on their diet, but few focus on sleep.

Meet Isabella, a sprinter specialising mostly over 200m whose goal is “Want to become a pro athlete and it’s been my dream since I was younger“.

Isabella runs for Crawley Athletic Club, in May 2024 she ran a personal best (PB) of 24.20, close to the Euro u18 standard. Well on her way to achieving her dream of becoming a pro-athlete.

Isabella started the 2024 athletics season ranked U17 #1 in the UK at 200m. A five week lay off due to injury caused Isabella’s ranking dropped. At the time of writing Isabella was ranked 3rd overall for U17 200m.

Unable to train fully following her injury Isabella’s lead coach, Jon Humphries-Cuff, suggested she work with Aliénor to develop behaviours that could increase her energy availability.

Aliénor has worked alongside Jon with some of his other athletes, including Joel Masters, to help them identify areas where tuning their nutrition, sleep and stress behaviours could increase energy availability.

Unmasking the Challenge

Actively looking for any areas where she can find a performance gain, Isabella strives to achieve her goal

To help Isabella understand the areas where adjusting her behaviours had the potential to improve her energy availability we started by helping her to collect data about herself.

Being an evidenced based practice we knew that establishing this baseline would highlight the areas to work on and engage Isabella’s competitive desire to improve.

3 areas for improvement stood out from the data Isabella collected, of these the big one was sleep.

Figuring Out the Why

The evidence pointed to sleep as a key area for Isabella to focus on.

We developed Isabella’s knowledge base through exploring some of the scientific findings.

How does not enough/poor quality sleep affect athletic performance

Numerous studies point to the importance of sleep for all of us. Some of the findings relating to athletes include:

  • Average and total sprint times decreased
  • Athletes exhausted faster after sleep deprivation
  • Lack of sleep adversely affected reaction time

Elite athletes are encouraged to consider sleep as important as training and diet.

Sleep permits the storage of energy. The absence of sleep prevents energy savings and instead energy stores meant for normal waking activity are used during the sleep deprivation period.

Isabella had recounted how she struggled to sleep through the night and consequently felt lethargic as a result. Putting this subjective evidence alongside the objective evidence of scientific study helped Isabella understand how her sleep may have been affecting her athletic performance.

Together we agreed a series of small actions that Isabella would do. Actions focussed on developing Isabella’s nighttime rituals. The aim being to put her in the best possible physical and mental position to benefit from deep sleep

For each of the actions we agreed how Isabella would measure the action, and what success looked/felt like.

As Isabella progressed through the actions she built new habits focussed on improving her sleep quality.

Unlocking Hidden Benefits

Within a matter of weeks Isabella was reporting that she was enjoying good quality sleep and sleeping through the night. Feeling refreshed each morning Isabella reported being less tired in school.

She’d successfully changed her habits and in the process improved her available energy.

We went on to work with Isabella on hydration and her confidence in how much to eat.

When Isabella returned to competition, she discovered that she had barely lost any time against her personal best:


Isabella ran 12.2 [100m race]

On the grand scheme of things, it’s a good time/race. Her PB is 11.9 but the truth is she had 5 weeks off the track and only 2 weeks of gradual training so overall we’re pleased with the result

– Jason, Isabella’s father


The invaluable support of nutrition and sleep coaching had enabled Isabella to unleash her energy potential. Creating a foundation upon which she could build on to get to the European’s.

References

The effects of sleep loss on capacity and effort, Engel-Friedmen, 2014

Intermittent-Sprint Performance and Muscle Glycogen after 30 h of Sleep Deprivation, Skien & Dufield, 2011

Effects of sleep deprivation on cardiorespiratory functions of the runners and volleyball players during rest and exercise, Azboy & Kaygisiz, 2009

The effect of sleep deprivation on choice reaction time and anaerobic power of college student athletes, Taheri & Arabameri, 2012

7 Personal Bests, The Astonishing Power Of Nutrition Coaching

Teenage athletes have unique energy demands due to their growth, development, and increased physical activity.

They place significant demands on their bodies. Consequently, it’s imperative they fuel their bodies adequately to support all the demands of growth, recovery, and performance.

Recognising the diverse demands placed on teenage athletes, our Sports Nutrition Coaching approach is comprehensive. Focussing on healthy habits for planning & preparation, ensuring energy availability, hydration, recovery, sleep, and stress management.

Meet Orla, a promising and determined 14year old multi-event athlete at Cheltenham & County Harriers whose journey epitomises the essence of client success.

With Orla feeling sluggish and struggling with her sleep, her parents harboured concerns about her energy levels and overall vitality, prompting contemplation about potential underlying issues.

At this point they turned to Aliénor for advice.

Orla’s Journey Empowered by Sports Nutrition Coaching

Despite her low energy and her parents concerns for her health, from the get go Orla’s aspirations were clear: she aimed to enhance her athletic prowess.

In addition to her club athletics, Orla is also involved in other sports activities in and out of school. She is very active, with 15-19hours of intense activity or competitive preparation each week, and this on top school work! Not to mention the demands of significant physical and mental growth that is part and parcel of being a teenager.

Unveiling the Sports Nutrition Coaching Approach: Nourishing Body and Mind

It’s important the teenage athlete is in control of their journey, not their parents or sporting coach.

At Aliénor we are athlete led. We don’t direct or prescribe. We secure buy-in through discussion and encourage athlete ownership of their journey with our guidance and support. Our goal is to empower the teenage athlete. Enabling them to learn about how different habits and fuelling strategies affect their energy levels, performance and recovery.

How we worked with Orla

To understand Orla’s energy imbalances, we encouraged Orla to delve deep into her lifestyle choices. We helped Orla examine her dietary habits and training regimen to document a baseline for Orla.

The family enjoyed a generally healthy diet. However, Orla wasn’t properly hydrating or consuming enough calories to fuel her demanding training regimen and active lifestyle. She was also topping up her energy needs with the hollow calories of sweets and ultra-processed foods.

The information Orla provided indicated she was running an energy deficit and she showed signs of Low Energy Availability. Confirming the concern that Orla’s parents had rightly flagged. We were able to illustrate to Orla how her lifestyle choices were impacting her performance and wellbeing.

Embarking on Sports Nutrition Coaching with Orla, we initially focused on improving habits to support her hydration and calorie intake.

The actions that Orla opted to take, with our guidance, were all discussed and agreed with her. Including what success looked like, how it was measured and how it tied back to her personal goals.

Actions are framed as experiments and opportunities to learn. Orla was encouraged to notice how she felt before during and after a period of taking specific actions. Enabling her to connect how she felt with the behaviour she was practicing.

Small changes in a structured and methodical manner helped Orla understand specifically what worked well for her, and what didn’t.

With an upcoming event we explored specific fuelling strategies to help her manage her energy availability and support improved performance.

Conscious that the most compelling evidence is that which we witness for ourselves. We knew that the tangible results would demonstrate to Orla the power of the work she was doing with us.

During the competition Orla achieved no less than five personal bests across the seven events!

Orla and her mother, attributed the success to the changes Orla had made as a result of Sports Nutrition Coaching.

In a subsequent competition Orla unfortunately struggled, but why? Well, her mother tells us that for a variety of reasons Orla had reverted to some old behaviours. Orla hadn’t taken her fuelling as seriously and as a result her performance suffered.

The contrast between the performance in the two events provided a powerful contrast. Understanding what she had done differently confirmed to Orla the power of the habits developed through nutrition coaching.

Orla’s personal bests stand as tangible markers of Orla’s progress. Each PB and Orla’s subsequent experience is emblematic of the competitive advantage Sports Nutrition Coaching brings.

Success isn’t solely measured by victories on the field or track; it’s about the profound changes experienced within.

For Orla, success began with the realisation that optimal performance extends beyond physical capabilities. When the actions she was taking were causing her to feel better in herself her engagement shifted gear.

Embracing Growth

Orla’s journey serves as a beacon of inspiration. Illuminating the transformative potential of personalised Sports Nutrition Coaching in unlocking peak performance and fostering lifelong wellbeing.

We are extremely proud to support Orla as she continues her journey in pursuit of her ambitions.

Boost Your Performance: One Footballers journey to better performance

Fuelling for performance doesn’t just happen, in fact it’s a skill that sports people should focus on as much as the technical skills of their sport. Elite players and athletes, such as England national team captain Harry Kane, receive specialist coaching on fuelling for performance.

“Nutrition has become a significant part of sport, particularly football. Considering the number of games we play, recovery is crucial, and food plays a big role in that – ensuring we get the right nutrients at the right time.

It’s something that’s helped me over the last six or seven years to become the player I am now and we’re fortunate we receive this help at the club and international level.”

Harry Kane, striker for Bundesliga club Bayern Munich and captain of the England national team (read full interview on “Harry Kane on How eating Healthily Helped Transform His Career here)

Professional football players like Harry Kane, have the benefit of working with nutrition teams at club and international level to ensure they have the right nutritional balance to play at the peak of their game. Unfortunately this isn’t necessarily the case for young players seeking to emulate Harry Kane.

This is where Aliénor steps in, working directly with individual players and partnering with clubs to provide support at a team level.

Meet Dan

Dan, is a 13year old footballer; like many kids his age, Dan dreams of becoming a professional footballer.

Dan is constantly on the move:

  • playing football with friends before school
  • playing football during school breaks
  • two hours of PE lessons a week
  • playing football with friends after school
  • 1 hour of club training one evening a week
  • martial arts one evening a week
  • club match on Sunday
  • occasional mid week club match

It seems like there’s hardly a moment when he’s not out on the field with a ball or doing something sport orientated. His passion for the sport is truly remarkable.

Spotted for his defensive skills, Dan received an invitation to join a team near the top of their league, two leagues higher than the team he was currently playing for. This was fantastic recognition for all the hard work he had put into honing his footballing abilities.

Naturally, Dan seized the opportunity to play for the higher-placed team, but he also wanted to continue playing for his old team in the lower league. With his old team having matches on Sundays, while the new team had matches on Saturdays Dan knew he would be able to play for both.

However, he hadn’t reckoned on the extra demands he was placing on his body.

Already leading an active lifestyle, Dan is now training and playing competitive matches for two clubs on top of all his other activity!

In stepping up to a higher league, Dan soon realised he wasn’t as quick or as physical as the opposition. He felt his energy levels rapidly dwindle during matches, becoming more sluggish and expressing to his parents that he was tired and had no energy, with the inevitable mood swings that came with it.

His parents turned to Aliénor for advice.

Low Energy Availability

It was clear that Dan was struggling with Low Energy Availability. Dan’s struggle with having sufficient energy serves to highlight the critical importance of prioritising health and wellbeing alongside pursuing the technical skills of your sport.

It became evident that Dan was not consuming enough to fuel his demanding lifestyle. In addition Dan wasn’t hydrating properly which was impacting his physical and mental performance; and didn’t have a fuelling strategy to support the additional demands of his sport.

Teenage athletes have unique energy demands due to their growth, development, and increased physical activity. They place significant demands on their bodies. Consequently, it’s imperative they fuel their bodies adequately to support all the demands of growth, recovery, and performance.

The Challenge of Consistency Between Two Homes

As Dan has found, having parents who are separated or divorced means navigating the complex reality of having two homes. Balancing the consistency of support between the two households can pose a significant challenge.

The reality for Dan is that his nutrition differs between houses. To raise awareness in both households we worked with Dan and both his parents. With Dan’s agreement, we set up a WhatsApp group for the four of us. On the group we shared coaching notes and action commitments with both households so that Dan could receive consistent support from both parents.

Embracing the Challenge and Crafting a Plan

At Aliénor we are athlete led, and also work with the parents to ensure that the athlete has the essential support at home. We are aligned with the principles of the England Footballs “Greater Game Programme“, with particular focus on the pillars of Health & Wellbeing, Eating Well and Sleeping Well.

To develop positive habits it’s important the teen is in control of their journey, not their parents or a coach. We encourage all our clients to take ownership of their journey with our guidance to help inform their decision making. For young teens this may be the first time in their lives they’re being empowered in this way, supporting them to make this step is essential.

As an evidenced based practice we secure buy-in and enable decision making by exploring available evidence, education and open discussion. We don’t direct courses of action, the athlete has to want and own the action they are committing to.

Fuelling for Performance: Crafting the Plan

We illustrated to Dan (and his parents) how his lifestyle choices were impacting his performance and wellbeing. Particularly, the significant gap between what Dan was eating/drinking and the demands he was placing on his body.

As Dan developed his understanding of the challenge and the importance of nutrition we started crafting a plan. Over a matter of weeks, the plan would help Dan develop behaviours that made incremental changes to his lifestyle.

Planning is a collaborative process. Through discussion with Dan we agreed an outline plan of the areas he felt he wanted to focus on first. With our guidance he considered the various actions he could take. We encourage small incremental change rather than an all-or-nothing approach. This made it less intimidating for Dan to adopt and stick to.

I really like the way you bring attention to a potential area for improvement, then set a small action which is very achievable. Rather than being a total lifestyle change, which would be too overwhelming, it’s almost a micro-adjustment, but it’s enough to make big changes in a relatively short period of time.

Steve

Dan’s Father

Recognising Success

Success isn’t solely measured by victories on the pitch; it’s about the profound changes experienced within.

Before we started working with Dan, he would regularly skip breakfast and lunch. His priority being to meet his mates for a kick around. After school he’d spend large on sweets before going for another kick around before heading home for dinner.

It wasn’t long before Dan realised that the actions he was taking were causing him to feel less sluggish. He was starting to feel the benefit of fuelling for performance!

This coincided with Dan’s parents noticing an improvement in Dan’s attitude to food and nutrition in general.

I like the way Daniel’s already starting to feel better about himself and the progress he’s making

Steve

Dan’s Father

Success on the Pitch

For Dan the real measure of success was having enough energy to go the full match and for his performance not to tail off due to fatigue.

It wasn’t long before Dan had the energy to play full matches on Saturday and Sunday without feeling completely drained and lethargic.

With a tournament coming up, the question was did Dan have enough energy to play multiple back to back matches. To support this we also helped Dan adopt a basic fuelling strategy.

By the end of the tournament Dan had enjoyed great games without his performance falling away. At the end of the tournament he noticed he was significantly fresher than the other lads around him. Sports Nutrition Coaching gave Dan the edge that maintained the team’s defence until the last whistle.

Embracing Growth

Dan has only recently started his journey but already he has taken ownership of his wellbeing. With new knowledge he is seeking to unlock his peak performance through personalised Sports Nutrition Coaching. We will continue to develop Dan’s knowledge enabling him to make better choices in fuelling for performance

We are extremely proud to support Dan as he pursues his dreams to become a professional footballer.

Disclosing the truth about protein supplements

In the world of sports and fitness, protein supplements are a hot topic. Athletes, from professionals to weekend warriors, often turn to protein powders, bars, and other supplements to meet their dietary needs. But are these supplements truly beneficial, and do they come with any downsides? Let’s dive into the science to weigh the pros and cons specifically for athletes. Before we do let’s remind ourselves that supplements should be just that—supplemental to a balanced diet that includes whole food sources of high protein.

Advantages of Protein Supplements

Embracing Convenience & Ensuring Accessibility

Protein supplements are incredibly convenient. They offer a quick and easy way to boost your protein intake, especially if you have a busy training schedule. For instance, mixing a protein shake takes just a few minutes, making it a perfect post-workout snack or a meal replacement in a pinch.

Maximise Muscle Growth and Accelerate Recovery

One of the main reasons athletes use protein supplements is to support muscle growth and recovery. Numerous studies have shown that consuming protein, particularly after resistance training, can help enhance muscle protein synthesis. For example, a study published in the American Journal of Clinical Nutrition found that whey protein supplementation can significantly increase muscle mass and strength gains when combined with resistance training.

Meeting Higher Protein Needs with Ease

Athletes often have higher protein needs compared to the general population due to the demands of their training. Protein supplements can help bridge the gap between dietary intake and these increased requirements. According to research in the Journal of the International Society of Sports Nutrition, athletes typically need more protein to support muscle repair and growth, and supplements can help them achieve these higher intake levels efficiently.

Drawbacks of Protein Supplements: A Considerate Analysis

Potential for Overconsumption

While protein is essential, consuming too much can strain the kidneys, particularly in individuals with pre-existing kidney conditions. A study in Nephrology Dialysis Transplantation highlighted that long-term high protein intake could potentially accelerate kidney function decline in susceptible individuals. Additionally, a review in the Journal of the American College of Nutrition noted that high protein diets might also pose risks to kidney health, especially when not balanced with adequate hydration.

Significant Influence on Liver Health

High protein intake can also impact liver health. The liver is crucial in protein metabolism, and excessive protein can lead to an increased workload on the liver. A study published in Hepatology found that excessive protein intake might contribute to nonalcoholic fatty liver disease (NAFLD) in predisposed individuals. Moreover, research in Clinical Nutrition has suggested that very high protein diets could exacerbate liver conditions in those with preexisting liver disease.

Don’t Ignore Your Thirst!

Consuming high amounts of protein increases the body’s need for water. Protein metabolism requires more water for the excretion of nitrogen, a byproduct of protein breakdown. A review in the Journal of the International Society of Sports Nutrition highlighted that athletes on high-protein diets should increase their fluid intake to avoid dehydration and support kidney function. Another study in the European Journal of Clinical Nutrition emphasised the importance of adequate hydration to mitigate the risks of dehydration associated with high protein intake.

Nutrient Imbalance: Its Not Just About the Macros

As we’ll see shortly whole foods aren’t just the macros they include numerous essential vitamins and minerals. But that’s not the case with protein supplements.

Let’s take a closer look at some of the products offered by official sponsors of UK sporting organisations:

Healthspan

Official partners of British Athletics, produce the All Blacks Ultimate Whey Protein Blend. Looking at the product information it provides 24g of protein per serving, but there’s no reference to the micronutrients found in whole food.

SiS (Science in Sport)

Official partners of English Athletics, produce REGO Whey Protein. Looking at the product information it provides 22g of protein per serving, but no micronutrients. Though it does include the amino acid L-Leucine.

If you look at all these companies, they also sell vitamins and mineral supplements

Optimum Nutrition

Official partners of England Rugby, produce Gold Standard Whey. Looking at the product information it provides 24g of protein per serve, but no micronutrients. Though they do say that each serve contains 5.5g of BCAA (Branch Chain Amino Acids).

Relying heavily on protein supplements can lead to a nutrient imbalance as they lack essential vitamins and micronutrients.

We often hear that people are advised to take vitamin B12 supplements to give them more energy. As you’ll see below Vitamin B12 is present in high protein content whole foods of animal origin. So if you’re eating a balanced diet supplementation shouldn’t be needed. Moreover Vitamin B12 supplements “will only improve symptoms such as tiredness and lack of energy if they are caused by low vitamin B12 levels” NHS. As you’ll see below Vitamin B12

Whilst we’re on the topic of vitamin B12, it doesn’t directly provide energy, though it does give the body the tools it needs to convert food molecules into energy.

Beware: Uncovering the Menace of Toxicity

Not all protein supplements are created equally.

In 2018 the Clean label Project tested 134 top selling protein supplements. They found elevated levels of heavy metals including arsenic, lead, cadmium, and mercury as well as BPA (known to cause cancerous tumours, birth defects and other developmental disorders) leaching from packaging into the finished product. You can read the full white paper of the study here.

And this is before we even consider substances that might be used in supplements that are on banned substance lists. Not necessarily an issue for the keen amateur, but it is for the elite athletes we work with.

Not all jurisdictions legislate or control supplements equally, making buying products off the internet a bit of a lottery.

Whole Food: Your Ultimate Health Solution

While protein supplements can be useful, whole food sources of protein are so much more than protein. This is because whole food sources of protein are accompanied by a host of essential vitamins, minerals and amino acids (micronutrients).

Here are some excellent whole food sources of high protein, including their average protein content and vitamins & minerals:

Food SourceAverage ProteinVitamins & Minerals
90% Lean Minced Beef25g 100gVitamin B1, B2, B3, B5, B6, B12, E, K, choline, manganese, calcium, sodium, magnesium, potassium, copper, iron, phosphorus, selenium, zinc
Chicken Breast22g per 100gVitamins A, B1, B2, B3, B5, B6, B12, E, choline, iron, sodium, copper, zinc, magnesium, potassium, phosphorus, selenium
Salmon Fillet20g per 100gVitamins A, B1, B2, B3, B5, B6, B12, manganese, calcium, sodium, iron, zinc, magnesium, potassium, phosphorous, copper, selenium
Tinned Tuna24g per 100gVitamins A, B1, B2, B3, B5, B6, B12, manganese, calcium, sodium, iron, zinc, magnesium, potassium, phosphorous, copper, selenium
Eggs6.3g per 100gVitamins A, B1, B2, B3, B5, B6, B12, D, K, choline, manganese, magnesium, potassium, calcium, copper, zinc, sodium, iron, phosphorus, selenium
Greek Yogurt10g per 100gVitamins A, B1, B2, B3, B5, B6, B12
Chickpeas9g per 100gVitamins A, B1, B2, B3, B5, B6, C, E, K, choline, calcium, selenium, potassium, zinc, magnesium, iron, phosphorus, copper, manganese
Edamame11g per 100gVitamins B1, B2, B3, B5, B6, C, E, K, choline, calcium, zinc, iron, potassium, magnesium, phosphorus, copper, manganese
Cottage Cheese11g per 100gVitaminsA,B1, B2, B3, B5, B6, B12, D, E, Choline, magnesium, potassium, zinc, copper, calcium, phosphorus, selenium, sodium.
Lentils (cooked)9g per 100gVitamins B1, B2, B3, B5, B6, C, E, K, choline, calcium, selenium, magnesium, zinc, potassium, phosphorus, iron, manganese, copper
Source: Nutrient Optimiser.com see links for full details of each food source

Conclusion

Protein supplements can be a valuable tool for athletes needing a quick, convenient protein boost. However, it’s essential to use them wisely and not as a replacement for a balanced diet rich in whole foods.

Supplements should enhance your diet, filling in gaps as needed, rather than becoming a primary source of nutrition.

Understanding the potential downsides, such as overconsumption, nutrient imbalances, cost, quality issues, and increased hydration needs, can help you make informed decisions about incorporating protein supplements into your diet.

As with any dietary change, it’s a good idea to consult with a doctor or a registered dietitian to determine what’s best for your individual needs.

Ultimately, if you decide to incorporate protein supplements, or any other supplements for that matter, make your choice with utmost care and consideration.

References:

American Journal of Clinical Nutrition, “Whey protein supplementation and muscle mass and strength gains in resistance-trained individuals.
Journal of the International Society of Sports Nutrition, “Protein requirements for athletes.
Nephrology Dialysis Transplantation, “Impact of high-protein diets on kidney function.
Journal of the American College of Nutrition, “High protein diets and kidney health risks.
Hepatology, “High protein intake and nonalcoholic fatty liver disease.”
Clinical Nutrition, “Impact of high protein diets on liver health.

Journal of the International Society of Sports Nutrition, “Hydration needs in high-protein diets.
European Journal of Clinical Nutrition, “Hydration and high-protein diets.
Nutrition Reviews, “The importance of whole foods for balanced nutrition.

Navigating the Waters: Isotonic Drinks vs. Energy Drinks for Athletes

In the world of sports and fitness, the array of beverage options can be dizzying. Among the contenders are isotonic drinks and energy drinks, each with its own allure and purported benefits. But what sets them apart, and why should athletes steer clear of energy drinks? Let’s dive in and explore the science behind these choices.

Understanding Isotonic Drinks:

Isotonic drinks are formulated to replenish fluids and electrolytes lost during exercise, making them a go-to choice for athletes engaged in prolonged or intense physical activity. These beverages maintain a balance of electrolytes, such as sodium and potassium, which are crucial for proper hydration and muscle function. Additionally, isotonic drinks typically contain carbohydrates, providing a quick source of energy to fuel workouts and help maintain blood sugar levels.

The Lowdown on Energy Drinks:

On the other hand, energy drinks have surged in popularity, often marketed as a quick fix for fatigue and enhanced performance. However, studies supporting these claims are limited. While they may deliver a temporary jolt of energy, the ingredients in energy drinks can have adverse effects, particularly for athletes.

Energy drinks are laden with stimulants like caffeine and sugar, which can lead to increased heart rate, dehydration, and jitteriness. Moreover, the high sugar content may cause a rapid spike in blood sugar levels followed by a crash, leaving athletes feeling drained and unfocused.

Energy drinks laden with stimulants like caffeine and sugar, which can lead to increased heart rate, dehydration, and jitteriness.

Why Athletes Should Steer Clear of Energy Drinks:

1. Performance

While there caffeine and sugar in these drinks may provide a temporary boost in alertness, their effects are short lived and accompanied by potential side effects like palpitations and nausea. In contrast, isotonic drinks offer a balanced blend of hydration and energy, supporting sustained performance throughout training sessions and competitions.

2. Dehydration Risk

The high levels of caffeine contained in these drinks, causes the body to increase urine production, contributing to dehydration. For athletes striving to maintain peak performance, adequate hydration is paramount, making isotonic drinks a more suitable choice

3. Nutritional Value

The primary ingredients in these drinks are caffeine and sugar, but lack the electrolytes required for recovery. Athletes require a well rounded approach to nutrition, including adequate intake of carbohydrates, electrolytes, and hydration. Isotonic drinks align more closely with nutritional needs, making them a wiser choice for athletes seeking optimal performance and recovery.

4. Potential adverse effects of energy drinks in relation to their ingredients

Several studies have shown an increase in heart rate and arterial blood pressure after energy drink consumption; recently, energy drink consumption has been related to myocardial infarction (heart attacks) in healthy 17-and 19-year-old boys.

Neurological and psychological effects have also been related to energy drink consumption. The high caffeine content of these drinks can lead to individuals developing symptoms of caffeine intoxication. Symptoms include anxiety, insomnia, gastrointestinal upset, muscle twitching, restlessness, and periods of inexhaustibility.

Conclusion:

The choice between isotonic drinks and energy drinks can significantly impact an athlete’s performance and wellbeing. While energy drinks may offer a fleeting surge of energy, their potential downsides outweigh the benefits for athletes. Instead, opting for isotonic drinks provides a balanced solution, delivering the hydration, electrolytes, and energy necessary to excel in training and competition.

Sources

Energy Drink Consumption: Beneficial and Adverse Health Effects” Alsunni, 2015

Impact of mild dehydration on wellness and on exercise performance” Maughan, 2003

Relative Energy Deficiency in Sports, the condition all sports people need to know about

Relative Energy Deficiency in Sports, or RED-S, is a syndrome caused by low energy availability. Imbalanced energy intake and exercise expenditure compromise athletes’ health and performance. Although initial performance may improve, long-term consequences include decreased power, training response, cognitive function, and motivation. Preventative measures include education, individualized support, and sensible fueling strategies.

Let’s start with a universally agreed definition:

International Olympic Committee (IOC) definition:

A syndrome of impaired physiological and/or psychological functioning experienced by female and male athletes that is caused by exposure to problematic (prolonged and/or severe) LEA [Low Energy Availability].

In simple terms the athlete is consistently burning more calories than they consume resulting in a lack of energy. This comes with some very serious consequences that are discussed later in the blog.

For clarity, in this blog we refer to athletes, this is in the broadest sense of any one competing in a sport, not just the narrow definition of track and field athletes.

Ok so what do we mean by Low Energy Availability? And whilst we’re at it what’s “problematic LEA“?

Energy availability (EA) is the difference between daily Energy Intake (calories consumed) and Exercise Energy Expenditure (calories burned during exercise).

Low Energy Availability (LEA) refers to any imbalance between the energy consumed through diet and the energy expended during exercise, resulting in an insufficient supply of energy to meet the body’s overall needs. This inadequacy compromises the body’s ability to sustain optimal health and performance.

Problematic LEA exposure to low energy availability causes significant and possibly long-lasting disruption to different body systems.

How can it be bad for my performance if I get faster and weigh less?

An athletes initial performance might improve. However, failure to recognise problematic LEA and RED-S will inevitably cause performance and health to deteriorate. Athletes can expect to experience decreases in power performance, availability, training response, recovery, cognitive performance/skill, motivation, muscle strength, endurance.

If athletes develop low energy availability (LEA), it can lead to a Relative Energy Deficiency in Sport (RED-S) syndrome which has severe health consequences if not treated.

A lack of understanding about needing more nutrients when training more may lead to improved performance at first. But later, changes in body composition and short-term performance gains can lead to more focus on diet, exercise, and body image, to attain even better performance thus leading to restrictive eating practices.

OK, now we know what it means and that performance will suffer, what are the health risks for athletes?

The health concerns associated with longstanding LEA and RED-S include:

  • Fatigue
  • Rapid weight loss
  • Missed periods or delayed puberty (female athletes)
  • Low libido (male athletes)
  • Frequent illness
  • Hair loss
  • Impaired cognitive function (eg trouble focusing)
  • Issues with heart and blood health
  • Mental Health issues (eg irritability and depression)

Individually or combined these can all harm how well you feel, make it more likely for you to get hurt, and make it harder to perform well in sports.

Is this the same as the female athlete triad?

The female athlete triad is a subset of RED-S describing three interrelated conditions: disordered eating, irregular menstruation, and bone loss. It isn’t a condition of in its own right but a spectrum.

At the positive end of the spectrum, female athletes consume enough good quality calories to cover their energy needs. They have regular monthly periods, and their bone strength is as good as or better than inactive people because of their weight-bearing workouts.

One sign of not having enough energy is irregular periods in women. Basically an indication that their hormone production is affected.

At the very negative end of the spectrum, female athletes aren’t eating enough good quality calories to cover their energy needs. Because of this there can be a loss of menstrual cycle, low bone density, and osteoporosis. Athletes are at risk for fractures due to low bone density and osteoporosis.

A problem with any one aspect of the triad can be a cause for concern. If you’re a female athlete experiencing issues with any aspect of the triad seek help from your Doctor and the support of a health coach.

So, how do you prevent LEA and RED-S?

Education and awareness are fundamental to help athletes focus on maintaining a healthy energy balance. Moreover, it is crucial to work individually with athletes to support them in developing healthy eating habits. Such as consuming the right amount of nutrients, understanding when to eat, and how/when to choose appropriate supplements. In short, nutrition coaching.

The IOC identifies three athlete development stages:

Developing

No body composition assessments (other than for optimal growth progressions and no focus on body composition* for performance outcomes

National / Collegiate

Limited focus on body composition* assessment and discussions (and only from a health perspective)

Elite / Professional

Body composition* assessment w/ periodised approach only with mature athletes with positive self-body image

*Body composition is manipulating the relative amount of fat and muscle.

The IOC consensus: body composition and dieting techniques are only for mature Elite / Professional athletes with a positive self image.

Supporting athletes to build the foundational nutrition skills and to adopt sensible fuelling strategies is essential. It is this area of coaching that Aliénor focuses on, particularly with youth athletes.

If you would like to learn more

Check out the scientific papers provided in the sources section below.

To learn how we can help check out our Performance Nutrition Coaching page.

Sources

2023 International Olympic Committee’s (IOC) consensus statement on Relative Energy Deficiency in Sport (REDs), Mountjoy, Ackerman, et al, 2023

“I’d got self-destruction down to a fine art”: a qualitative exploration of relative energy deficiency in sport (RED-S) in endurance athletes; Langbein RK, Martin  D, Allen-Collinson  J , et al, 2021

Relative Energy Deficiency in Sport (RED-S): Scientific, Clinical, and Practical Implications for the Female Athlete, Cabre, et al, 2022