Fighting The Fatigue Of Your Brain And Your Muscles
It’s late in the fourth quarter, the third period, stoppage time or even that last mile. That is when athletic trainers, strength and conditioning specialists and coaches find out if all of that investment of time and money in physical endurance training was worth it as they watch to see if their athletes will have enough left in the tank to finish. Often though, its not necessarily the muscles or physiological systems that shut down but rather the brain in an overprotective mode. Researchers at the University of Copenhagen think they have found the exact process that contributes to this sense of fatigue while engineers at the University of California – San Diego are piloting a wearable patch that can warn when an athlete is about to hit the wall or “bonk”.
In his 2007 book Brain Training for Runners, Matt Fitzgerald, long-time running columnist and author detailed the role of the brain in controlling physical endurance. Traditionally, fatigue used to be considered a breakdown of biochemical balances with the buildup of lactic acid or depletion of glycogen for fuel. However, research in the 1980s showed that this breakdown did not always occur and that athletes were still able to push through at the end of a game or race even though they should have been physically exhausted.
A new theory of the brain as a “central governor” emerged. Like a warning light in your car, the brain calculates the time to physical catastrophe or total exhaustion based on the current pace and feedback signals from the body. When it feels you won’t make it to your desired finish line, it begins to lower muscle output and sends messages to your conscious brain that its time to quit.
Now, new research from Associate Professor Jean-François Perrier from the Department of Neuroscience and Pharmacology at the University of Copenhagen points to the neurotransmitter serotonin as the agent or thermostat that signals the shutdown.
“Our discovery is helping to shed light on the paradox which has long been the subject of discussion by researchers. We have always known that serotonin is released when you exercise, and indeed, it helps us to keep going. However, the answer to what role the substance plays in relation to the fact that we also feel so exhausted we have to stop has been eluding us for years. We can now see it is actually a surplus of serotonin that triggers a braking mechanism in the brain. In other words, serotonin functions as an accelerator but also as a brake when the strain becomes excessive.”
The brain communicates with muscles through specialized motor neurons. As soon as you start exercising, serotonin is released in the brain making the motor neurons more active. However, when too much of it is released after long periods of exercise, the excess neurotransmitter clogs the axon and the messages to the muscles are weakened. Perrier is using this new information to learn how athletes can control their endurance naturally without the need for performance enhancing drugs.
“This new discovery brings us a step closer to finding ways of controlling serotonin. In other words, whether it will have an activating effect or trigger central fatigue. It is all about selectively activating the receptors which serotonin attaches to,” he explained.
However, Joseph Wang, nanoengineer at UCSD, still believes in measuring lactate as the best early sign of fatigue in an athlete. The body releases lactic acid when our aerobic breathing cannot produce enough energy for our muscles, switching us to anaerobic metabolism. It’s this lactate that builds up in our muscles and, along with the serotonin in our brains, produces our exhausted, “rubber legs” that slows us down.
Up until now, athletes would have to provide blood samples after a workout or performance to measure lactate. Wang and his team searched for a quicker method to give more timely feedback to, hopefully, take proactive steps to counteract the decline. They developed a wearable biosensor (see photo) that is worn like a temporary tattoo, measuring samples of sweat immediately and continuously for lactate levels.
“Such skin-worn metabolite biosensors could lead to useful insights into physical performance and overall physiological status, hence offering considerable promise for diverse sport, military, and biomedical applications,” according to Wang.
Just another example of research and technology coming together to improve performance.
About Metrifit
Metrifit is an athlete monitoring system that gathers subjective and objective information from both coaches and athletes in a simple but effective manner with intelligent visualization helping coaches and athletes to act on that data. Why not have a look at our Ready to Perform product and gain insight on the physical and mental state of your athletes through our daily wellbeing questionnaire? To find out more visit our Metrifit Product Overview page or get in touch for a free demo.
"As a school that cannot spend large amounts of money on athlete monitoring, Metrifit has provided us with a great tool for monitoring stress and athlete readiness at a great rate. Being athlete driven, we're able to get buy-in from the athlete, and drive individual or team wide conversations regarding lifestyle and performance education in the direction needed. Seeing acute and chronic stress on a real-time basis has greatly improved the way we schedule workouts and arrange travel during the season."
Metrifit Athlete Monitoring System
2017-06-20T22:26:45+01:00
Derek Bol
Strength & Conditioning Coach, Valparaiso University
https://metrifit.com/blog/testimonials/derek-bol/
"Metrifit has provided me with an opportunity to get to know and understand our players on a different level. I've found our conversations to be more intentional, which has been so important in developing deeper, more authentic relationships. Ultimately, understanding their needs has allowed me to push buttons that leads them to be better people and inspires them to be better athletes"
Metrifit Athlete Monitoring System
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Ryan Osborn
Head Basketball Coach, Carmel High School
https://metrifit.com/blog/testimonials/ryan-osborn/
"What’s more impressive is the ability to utilize the basics but at the same time have the capability to explore detailed and intricate correlative data points that helps us as coaches gain the most from our athletes. Metrifit has also served as an easy communications hub to ensure essential information is passed to the appropriate team. We are excited to what the future from Metrifit will bring."
Metrifit Athlete Monitoring System
2017-06-14T14:09:22+01:00
Michael Torres
CEO, Shift Performance, Miami
https://metrifit.com/blog/testimonials/michael-torres-short/
"We started using Metrifit to see if it gave us better predictability and allowed easier monitoring than our DIY excel sheets prior to the Tokyo qualifiers. In a sport where measuring training load is very difficult, Metrifit filled a huge gap in our ability to monitor our athletes’ performance state and recovery. After some months of collecting data I was able to clearly see when to back off and when to keep going with different aspects of the training programme, as well as when to provide extra care and support for our elite athlete – and without a doubt it is much more informative and sensitive than our DIY model, not to mention much easier! Looking forward to the next Olympic cycle with Metrifit as one of our essential tools."
Metrifit Athlete Monitoring System
2021-05-28T12:30:33+01:00
Emma Hawke, PhD Exercise Physiology
Coach - Sweden Climbing, Olympic Offensive - Female Coach Swedish Olympic Committee, Senior Lecturer - Coach education programme (Sweden)
https://metrifit.com/blog/testimonials/emma-hawke/
"The ability to acutely monitor stress and recovery and make the correct adjustments was critical to our health and performance throughout the NCAA tournament. Metrifit has a very strong educational component. With the information we get, I am able to clearly understand the habits and behaviors of our athletes, and how they may be impacting performance."
Metrifit Athlete Monitoring System
2017-06-12T11:42:14+01:00
Erik Helland
Director of Strength & Conditioning and Head Strength Coach Men’s basketball, University of Wisconsin
https://metrifit.com/blog/testimonials/erik-helland/
"We have been using Metrifit for the past season at Cornish Pirates. It has been greatly beneficial for us to have our wellness and load management data on one easy to access system. We have found this invaluable over the past season whereby Coaches, Physios and Strength and conditioning coaches can monitor both the psychological and physiological load of our athletes on a daily basis."
Metrifit Athlete Monitoring System
2017-06-16T15:06:04+01:00
Paul Cremin
Head Physiotherapist, Cornish Pirates Rugby Club
https://metrifit.com/blog/testimonials/paul-cremin-short/
"The visualisation of data allows for easy discussion between athletes, performance staff and medical teams and offers the potential to predict and avoid issues which could hamper performance. Over the year the data has proven instrumental in our critical decision making. Metrifit is a excellent monitoring tool however the unsung additional aspect is the fantastic and tireless customer support."
Metrifit Athlete Monitoring System
2017-07-25T14:10:08+01:00
Robert Walsh
Strength Coach
Nederlandse Ski Vereniging (Netherlands Ski/Snowboard Team)
https://metrifit.com/blog/testimonials/robert-walsh-short-testimonial/
"I wanted to reach out to thank Metrifit for an extremely successful season. Our Regis University women’s side won the ultra-competitive RMAC with a 11-0-1 record. Our student-athletes reported in post-season interviews the positive use of Metrifit that enabled their own reflection about their bodies and also found value providing information to coaches for our strategic planning purposes. On more than one occasion, we recognized deviations from norms and were able to step-in with a quick chat to help a player get back on track or refer her to the proper support personnel for further assistance. Fantastic! "
Metrifit Athlete Monitoring System
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J.B. Belzer
Head Coach, Women's Soccer at Regis University
https://metrifit.com/blog/testimonials/jb-belzer/
"Metrifit has enabled us to bring to life the complexiities associated with managing the academic, pastoral and sporting demands of pupils aged 13 - 18 in a UK day and boarding school environment It has provided another bridge between coaches and sports pupis, giving pupils a space to provide honest self reflection on wellbeing and providing coaches a head start on appropriate freshness and fatigue balance across the school week."
Metrifit Athlete Monitoring System
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Graham Williams
Athletic Development Coach, MSc ASCC
Millfield School, UK
https://metrifit.com/blog/testimonials/graham-williams-short/
"When COVID altered college athletics as we knew it, Metrifit came to the rescue. This intuitive athlete monitoring, health and well-being system provides the athlete, coach, and sports medicine staff a way to monitor and balance the physical, emotional, health and well-being of our athlete’s. Metrifit provided that calm in the middle of the perfect storm for our entire athletic department for the future. Thank you to the entire Metrifit family for assisting our department with a seamless process."
Metrifit Athlete Monitoring System
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Jennifer McIntosh
Head Athletic Trainer, Colorado School of Mines
https://metrifit.com/blog/testimonials/jennifer-mcintosh/
"The Metrifit RTP platform is an excellent tool to monitor, evaluate and make the right decisions for your athlete’s well being and performance. It enables coaches and athletes to track and sift through all the variables that underpin well being and performance on a day to day basis and to address an issue or potential issue in real time. A simply wonderful product."
Metrifit Athlete Monitoring System
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Dr. Dale Richardson
CEO Achieve Total Performance Pty Ltd
https://metrifit.com/blog/testimonials/dale-richardson/
"The success of young athletes using Metrifit was an interesting challenge in the Elite Soccer space… After six months of learning, creating habit with teenagers the project is a huge success…. 90% completion rate has allowed us deal with all the key KPI’s that are needed in their development. In our space with developing athletes…Metrifit is a godsend and is the most important tool in this space."
Metrifit Athlete Monitoring System
2017-06-16T16:51:01+01:00
Niall O’Driscoll
Academy Directory, SJ.B (St. Joseph’s Bray ) Academy
https://metrifit.com/blog/testimonials/niall-odriscoll-short/
"Metrifit provides immediate insight and feedback on the physical and mental states of the student-athletes. It allows us to adjust practices and training sessions to accurately meet needs. We have been able to identify potential injury concerns, track current injury status and monitor return to play progress."
Metrifit Athlete Monitoring System
2017-06-16T15:08:31+01:00
Kari Thompson
Head Volley Ball Coach, Southern Illinois University
https://metrifit.com/blog/testimonials/kari-thompson/
"Metrifit has been hugely beneficial in supporting our coaches and back room staff to track and monitor our players training loads, performance and readiness to train. Having a one-stop shop for collating all relevant information across a holistic picture of the player allows us to help prevent burnout, injury and provide timely feedback and communication to all."
Metrifit Athlete Monitoring System
2017-06-12T14:01:46+01:00
Eamonn Fitzmaurice
Kerry Senior Football, Manager
https://metrifit.com/blog/testimonials/eamonn-fitzmaurice/
"Metrifit has been instrumental in helping our international Managers, Coaches and Medical teams to identify players who require modifications in training loads or who are struggling with some aspect of their preparation for, or recovery from, training and matches. One of the big strengths of this technology is that it allows our Managers and Medical teams to monitor players both during international competition and outside of these times."
Metrifit Athlete Monitoring System
2017-06-16T15:11:55+01:00
Dan Horan
Head of Fitness for International Football/Fitness Coach Men's Senior Team
Football Association of Ireland
https://metrifit.com/blog/testimonials/dan-horan-short/
"Metrifit is an outstanding platform to track your athletes’ wellness. It’s simple to use, easy to implement and gives outstanding information on your athlete’s subjective wellness which can be used to assign training loads. I highly recommend Metrifit for any coach looking to begin implementing technology into their program"
Metrifit Athlete Monitoring System
2017-06-12T17:58:50+01:00
Brijesh Patel
Quinnipiac University, Head Strength and Conditioning Coach
https://metrifit.com/blog/testimonials/brijesh-patel/
“Metrifit has become a multifactorial platform that has helped up us provide deeper context to the decisions that we make on a daily basis in regards to the physical development of our student-athletes. We have intimately been utilizing both the subjective wellness questionnaire along with player training load data to drive professional conversation and actionable tasks to enhance the sporting results and quality of life for our student-athletes with unparalleled success.”
Metrifit Athlete Monitoring System
2017-06-20T12:12:33+01:00
Kevin Schultz
Associate Director of Strength & Conditioning
Director of Olympic Strength & Conditioning
University of Wisconsin
https://metrifit.com/blog/testimonials/kevin-schultz-full/
"Our coaches through Metrifit basically have an ‘X-ray’ vision into the habits and lifestyles and stressors their athletes have on a day to day basis, especially when they are not together. Thus the professional authentic relationships created through the casual conversations, reflection process and application provided is priceless."
Metrifit Athlete Monitoring System
2017-06-12T14:21:17+01:00
Brian Clarke
Head Strength and Conditioning Co-ordinator,Noblesville High School
https://metrifit.com/blog/testimonials/brian-clarke/
“Metrifit has allowed us to gain better insight on our athletes and their individual stress response to training and outside factors. This has helped us to make daily adjustments when necessary, to further enhance their development which has led to higher performance levels, faster recovery, and a reduction in injuries. The new lifestyle profiling survey has been an invaluable insight into the lifestyle habits of my athletes and has helped focus on key areas that can be improved, benefiting athletes on their performance journey.“
Metrifit Athlete Monitoring System
2021-04-27T11:02:12+01:00
Dan Rickaby
Assistant S&C Coach, Tulane University
https://metrifit.com/blog/testimonials/dan-rickaby/
"Metrifit is an amazingly easy-to-use yet comprehensive monitoring tool for training and recovery! The elite athletes we work with are able track and monitor their situations and states daily, in order to maximize their performance loads and recovery practices. This also helps our coaches customize the training programs more effectively. I'd recommend this for any serious team / athlete or coach in wanting to bring out the very best in their long-term performances! "
Metrifit Athlete Monitoring System
2017-06-12T18:03:35+01:00
Edgar K. Tham
Founder and Chief Sport & Performance Psychologist, SportPsych Consulting (Singapore, Indonesia, Philippines)
https://metrifit.com/blog/testimonials/edgar-k-tham-2/
"Metrifit has been a great asset in helping guide the numerous decisions we make on a daily basis, that have a direct impact on our athletes well-being and progress. The platform is extremely user friendly and the reports and analytics that reflect the data collected daily, can be catered to what you are most specifically curious to know about the athletes both individually and collectively"
Metrifit Athlete Monitoring System
2021-04-29T15:31:16+01:00
Aaron Mansfield
Head Coach, LMU Lions, Loyola Marymount University
https://metrifit.com/blog/testimonials/aaron-mansfield/
"While working with the Clare Senior Hurling team (2012-2014), Horse Sport Ireland (U25 European Eventing Champions) and currently with the Limerick Senior Hurling Team, Metrifit provides our team with critical information across a number of essential aspects of elite athletic performance. You don’t really know how your players are responding to training stimuli unless you have daily data and Metrifit provides and easy to use and highly effective means of finding this critical information."
Metrifit Athlete Monitoring System
2017-06-12T13:55:49+01:00
Joe O’Connor
NISUS Fitness, S&C Coach Clare Senior Hurling, Horse Sport Ireland and Limerick Senior Hurling
https://metrifit.com/blog/testimonials/joe-oconnor/
"Gaelic football is an intermittent high-intensity collision-based field sport requiring high levels of endurance, strength, power, agility, and speed as well as proficiency with gaelic-related skills. These components comprise the training modalities used at the elite level and the monitoring of such a vast range of modalities is central to peak performance. The athlete monitoring tool Metrifit allows us to do this and can keep us one step ahead of our competitors."
Metrifit Athlete Monitoring System
2017-06-12T14:23:50+01:00
Jason McGahan
Sports Scientist, Kildare Football, PhD Sports Science Researcher
https://metrifit.com/blog/testimonials/jason-mcgahan/
"The holistic approach of medical, physical, emotional and even tech/tactical; bringing together what we need to monitor and evaluate our University players. “If you can’t measure it – it doesn’t exist.” I know we were the first Canadian University to use the program and I know many more will be asking for it in the future! I highly recommend Metrifit."
Metrifit Athlete Monitoring System
2017-06-12T14:25:37+01:00
Tino Fusco, B.Sc. ChPC
Head Coach, Women's Soccer, Mount Royal University (Canada)
https://metrifit.com/blog/testimonials/tino-fusco-b-sc-chpc/
"Metrifit is an integral part of the set up within the senior and intermediate inter-county Camogie. The data collected daily on the individual players is critical to the decision making of the backroom team including, managers, trainers, selectors, physiotherapist and indeed myself. As a nutritionist it allows me to monitor the quality of the player’s diet, energy levels, sleep pattern and overall wellbeing."
Metrifit Athlete Monitoring System
2017-06-13T16:38:55+01:00
Yvonne Treacy
Nutritionist, Wexford Camogie
https://metrifit.com/blog/testimonials/yvonne-treacy-short/
"We have found metrifit to be a great tool to ensure we can monitor and adapt our athletes training loads regularly. This programme has ensured our coaches and staff can maximize all training and recovery to each individual needs on a day to day basis. It is user friendly and provides excellent visual data that can be viewed by both practitioners and athletes. With the help of Metrifit support team, we have personalized it to suit our specific sport and training needs. It's a excellent athlete monitoring tool and is essential for assisting the team to perform at their best"
Metrifit Athlete Monitoring System
2021-06-25T11:19:31+01:00
Lee Stutely
Team Manager and Athlete Support Services Coordinator at Great Britain Wheelchair Rugby
https://metrifit.com/blog/testimonials/lee-stutely/
"The cutting edge technology of Metrifit enables Managers, Coaches and Players to use this innovative technology to gain these crucial percentage points over their opponents in a technologically advanced yet easy to use web-based platform. The data collated on a daily basis greatly informs Management Teams while the educational aspect of the system really appeals to modern day athletes who are constantly looking for that extra edge."
Metrifit Athlete Monitoring System
2017-06-14T13:24:03+01:00
Cian O’Neill
Kildare Senior Football Manager
https://metrifit.com/blog/testimonials/cian-oneill-short/
“I have been using Metrifit for the past number of years and I have found it to be an excellent piece of software. It is extremely easy to use and has proved very beneficial in preparing myself for competition. The ability to view my health and wellbeing stats everyday and see how this influences my performance in both practice and competition has been very helpful. I have been able to put more effort into key areas such as fluid intake, sleep and balanced golf practice and training. Having the ability to view my detailed stats helps me to understand exactly where I am and how I need to adjust my training or health choices. I have found using Metrifit this past year has been a crucial help for me to play well. As I now have turned 50 I am playing on The Champions tour in the USA and have played well during my first year. Metrifit has been as important as my golf equipment in achieving that success.”
Metrifit Athlete Monitoring System
2019-03-04T20:48:39+00:00
Robert Karlsson, Professional Golfer
https://metrifit.com/blog/testimonials/robert-karlsson/
"Metrifit has been used to gain a more in-depth insight into our student-athlete’s progressive athletic development and balance relative to their particular sporting and training activities, academic studies and total load. Metrifit doesn’t just help with optimising our Sports Scholarship students’ athletic performance. It assists us in helping them get the balance right between their sporting activities and academic studies."
Metrifit Athlete Monitoring System
2017-06-12T13:58:58+01:00
Richard Deuchrass
Lincoln University Athletic Performance Manager
https://metrifit.com/blog/testimonials/richard-deuchrass/
"When our players have been only training with the national team Metrifit allows me to liaise very closely with our conditioning coaches to manage load and intensity of training during training camps. I recommend it to anyone who wants an easy to use monitoring system."
Metrifit Athlete Monitoring System
2017-06-15T12:51:46+01:00
Dave Passmore
Head Coach, Irish Hockey
https://metrifit.com/blog/testimonials/dave-passmore-short/
"I've found Metrifit an invaluable resource. Not only to monitor daily wellness, readiness to train and training load within the squad, but also to monitor training load externally with additional external squads. Furthermore, Metrifit has acted as a key teaching tool, allowing young athletes associate good sleeping, eating and recovery habits to an improved sense of wellness and thus superior on-field performance."
Metrifit Athlete Monitoring System
2017-06-14T13:31:14+01:00
Tommy Mooney
Strength and Conditioning Coach at DCU Sport and with Dublin Minor GAA
https://metrifit.com/blog/testimonials/tommy-mooney-short/
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