Injuries cost much more than medals

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Metrifit Athlete Monitoring System

Did you ever wonder why the world of sport is so obsessed with injury prevention? On the face of it, the answer is quite simple. If you are injured you just can’t perform at your best, if at all, and therefore your chances of success are little better than slim. However, it would be naïve to think that the cost of injury is calculated in terms of glory or medals alone, as in the modern world of sport there is a lot of money at stake.

When you consider that it is estimated that globally the cost of injuries in elite sport is in the region of $16 billion per annum, then you get an understanding of why sports science has become a huge part of the industry in recent years. A huge amount of time and money have been invested into the area with the aim being to reduce the impact of injuries on both individuals and team. There has been an increased emphasis on monitoring, reducing injury risk and treating injury along with a focus on ensuring as quick a return to action as possible.

Organisations invest heavily in their departments and there are many tales of almost top-secret treatment areas within clubs where the latest techniques are being developed and carried out. The reason is to ensure that athletes or teams have the best possible chance of winning. Success at the elite level means riches, not only for the athlete but also for owners and coaches, along with many other members of the organisation.

Money and success inextricably linked

Naturally, the two concepts of success and money are inextricably linked and ensuring your star players are available for selection is key for any team. Put simply, the monetary rewards can only be a reflection of success on the field of play and this has been highlighted by data recently published relating to injuries in the English Premier League. The data reveals that a total of 20,576 days were lost to injury during the 2016/17 season which represents a total wage bill for injured players of £131,314,980.

The stats showed a total of 614 significant injuries with the highest occurrence being:-

  • hamstring (166)
  • ankle/foot (161)
  • knee (151)
  • knocks/muscular (149)
  • groin/hip (115) and
  • calf/shin (112)

Apart from the cost, which affects all clubs, the other aspect of this research is the impact on success, and it is clear that those teams with less injuries – particularly to their star players – are most likely to have a successful season. It is no coincidence that Chelsea, who finished the season as champions, were the second lowest in terms of days lost through injury at 358 days. West Brom was the only team with less (319) but they can claim to have had one of their best seasons in some time. In terms of the small margins between success and failure, the effects of injuries can be significant and this is illustrated by a comparison between Chelsea and their main rivals, Tottenham.

Total Injuries
Chelsea: 46
Tottenham: 58

Total days
Chelsea: 529
Tottenham: 1026

Significant Injuries
Chelsea: 20
Tottenham: 27

Total days
Chelsea: 358
Tottenham: 859

The findings also point to the fact that at a key period of the season when Tottenham were without two important defenders, they won only three of ten games. Meanwhile, Sunderland, who finished bottom of the league, had the most number of significant injuries (47), and had the most number of days lost (1813).

The economics of sport

These stats illustrate just how important it is to minimise the risk of injury and the time lost as a result. It is a subject dealt with by Robert Hudson in an article entitled How Economists Tackle Sports Injuries in the Financial Times when he states:

How long players – and especially star players – spend recovering, therefore, becomes a matter of vital concern. Team doctors, for better or worse, are focused on helping players get back on the field as quickly as possible: in professional sport, the difference between 10 days and 12 days can be the ball game

He points to a forthcoming article in the British Journal of Sports Medicine, where John Orchard outlines just how important it is to deal with injury. He reveals that according to Orchard, the differences in skill between the top clubs’ players are so slight that he’s surprised teams don’t seem to appreciate

what seems obvious from the outside: injury outcomes will be a key factor in determining who wins the Premiership each year

Not surprisingly this is not just a phenomenon in the Premier League and Hudson reminds us that of the ten healthiest teams in the NFL in 2008, seven made the play-offs. He also points out that a knee injury to New England Patriots’ Tom Brady saw him sit out all but ten minutes of that same season, while being paid a salary of $14m.

Less physical contact

The cost of injury is one of the main reasons why there have been so many changes in a variety of sports over recent years that have resulted in stricter rule enforcement by referees, retrospective punishment and a decrease in physical contact. An example of this is highlighted by Andrew Leigh in The economics of sport: how the cost of injured players has ensured fewer fights. Leigh reveals that the number of fights in the Australian Rugby League has dropped dramatically in recent years. This is due to the fact that the authorities have got tough in terms of punishing players involved in fights, and he explains just why.

The answer is that, as the economic cost to the NRL of fighting has gone up, rugby league officials have seen to it that the supply of fights goes down. As teams have invested more in their players, the cost of an injured or suspended player has steadily risen

Injury prevention

As a result there has been a huge investment in technology that will help reduce injury and it is now accepted that monitoring athletes is vital in terms of preventing injuries. This area has been explored by Tim J Gabbett in The training-injury prevention paradox: should athletes be training smarter and harder?. We dealt with this article in a previous blog (New study highlights benefits of monitoring) where we pointed out that the findings of Gabbett’s study create a very strong case for careful monitoring of athletes. There is a clear need to ensure that athletes are following the correct training programme, doing sufficient training to build up their physical capacities or to ensure that they aren’t doing too little training.

Monitoring with Metrifit

Keeping track of an athlete’s routine not only in terms of training, but also nutrition and sleep along with overall well-being is a facility offered by Metrifit and one that has been highly successful when implemented in High Schools and Colleges throughout the United States, and with sports teams right across the globe.

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About Metrifit

Metrifit is an athlete monitoring system that gathers subjective and objective information from both coaches and athletes to drive behavior modification and improvement through insights modeled on descriptive and predictive analytics. It sounds complicated but Metrifit prides itself on its simple intuitive interface and advocates a simple effective approach that doesn’t overwhelm the athlete or the coaching/staff member. It has received high praise for its intuitive interface and it allows monitoring to be scaled for all levels of athletes and teams. Recent research by Anna Saw (Deakin University, Australia) has shown that use of Metrifit is associated with increased athlete sporting self-confidence. Metrifit is ‘athlete-centric’ helping to develop self-awareness, encourage creative thinking and emotional intelligence as well as developing ownership and responsibility within the athlete for their own success.

Our base product is also very affordable starting from $499 per year for up to 30 athletes and 5 coaches and is also available at monthly price of $44.99 with option of cancelling your subscription with 30 days notice.

To find out more information please visit Metrifit Overview or contact us at

"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."

Michael Torres

CEO, Shift Performance, Miami

Metrifit Athlete Monitoring System
2017-06-14T14:09:22+00:00

Michael Torres

CEO, Shift Performance, Miami

"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."
"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."

Tino Fusco, B.Sc. ChPC

Head Coach, Women's Soccer, Mount Royal University (Canada)

Metrifit Athlete Monitoring System
2017-06-12T14:25:37+00:00

Tino Fusco, B.Sc. ChPC

Head Coach, Women's Soccer, Mount Royal University (Canada)

"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 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."

Dan Horan

Head of Fitness for International Football/Fitness Coach Men's Senior Team
Football Association of Ireland

Metrifit Athlete Monitoring System
2017-06-16T15:11:55+00:00

Dan Horan

Head of Fitness for International Football/Fitness Coach Men's Senior Team
Football Association of Ireland

"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 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."

Kari Thompson

Head Volley Ball Coach, Southern Illinois University

Metrifit Athlete Monitoring System
2017-06-16T15:08:31+00:00

Kari Thompson

Head Volley Ball Coach, Southern Illinois University

"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."
"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."

Jason McGahan

Sports Scientist, Kildare Football, PhD Sports Science Researcher

Metrifit Athlete Monitoring System
2017-06-12T14:23:50+00:00

Jason McGahan

Sports Scientist, Kildare Football, PhD Sports Science Researcher

"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."
"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."

Tommy Mooney

Strength and Conditioning Coach at DCU Sport and with Dublin Minor GAA

Metrifit Athlete Monitoring System
2017-06-14T13:31:14+00:00

Tommy Mooney

Strength and Conditioning Coach at DCU Sport and with Dublin Minor GAA

"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."
"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."

Niall O’Driscoll

Academy Directory, SJ.B (St. Joseph’s Bray ) Academy

Metrifit Athlete Monitoring System
2017-06-16T16:51:01+00:00

Niall O’Driscoll

Academy Directory, SJ.B (St. Joseph’s Bray ) Academy

"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 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."

Richard Deuchrass

Lincoln University Athletic Performance Manager

Metrifit Athlete Monitoring System
2017-06-12T13:58:58+00:00

Richard Deuchrass

Lincoln University Athletic Performance Manager

"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."
"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."

Cian O’Neill

Kildare Senior Football Manager

Metrifit Athlete Monitoring System
2017-06-14T13:24:03+00:00

Cian O’Neill

Kildare Senior Football Manager

"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 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.”

Kevin Schultz
Associate Director of Strength & Conditioning
Director of Olympic Strength & Conditioning
University of Wisconsin

Metrifit Athlete Monitoring System
2017-06-20T12:12:33+00:00

Kevin Schultz
Associate Director of Strength & Conditioning
Director of Olympic Strength & Conditioning
University of Wisconsin

“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.”
"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."

Joe O’Connor

NISUS Fitness, S&C Coach Clare Senior Hurling, Horse Sport Ireland and Limerick Senior Hurling

Metrifit Athlete Monitoring System
2017-06-12T13:55:49+00:00

Joe O’Connor

NISUS Fitness, S&C Coach Clare Senior Hurling, Horse Sport Ireland and Limerick Senior Hurling

"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."
"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."

Robert Walsh
Strength Coach
Nederlandse Ski Vereniging (Netherlands Ski/Snowboard Team)
Metrifit Athlete Monitoring System
2017-07-25T14:10:08+00:00
Robert Walsh
Strength Coach
Nederlandse Ski Vereniging (Netherlands Ski/Snowboard Team)
"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."
"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."

Paul Cremin

Head Physiotherapist, Cornish Pirates Rugby Club

Metrifit Athlete Monitoring System
2017-06-16T15:06:04+00:00

Paul Cremin

Head Physiotherapist, Cornish Pirates Rugby Club

"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."
"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."

Brian Clarke

Head Strength and Conditioning Co-ordinator,Noblesville High School

Metrifit Athlete Monitoring System
2017-06-12T14:21:17+00:00

Brian Clarke

Head Strength and Conditioning Co-ordinator,Noblesville High School

"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."
"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."

Erik Helland

Director of Strength & Conditioning and Head Strength Coach Men’s basketball, University of Wisconsin

Metrifit Athlete Monitoring System
2017-06-12T11:42:14+00:00

Erik Helland

Director of Strength & Conditioning and Head Strength Coach Men’s basketball, University of Wisconsin

"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 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."

Graham Williams

Athletic Development Coach, MSc ASCC
Millfield School, UK

Metrifit Athlete Monitoring System
2017-06-19T14:14:37+00:00

Graham Williams

Athletic Development Coach, MSc ASCC
Millfield School, UK

"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 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."

Yvonne Treacy

Nutritionist, Wexford Camogie

Metrifit Athlete Monitoring System
2017-06-13T16:38:55+00:00

Yvonne Treacy

Nutritionist, Wexford Camogie

"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."
"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."

Dave Passmore

Head Coach, Irish Hockey

Metrifit Athlete Monitoring System
2017-06-15T12:51:46+00:00

Dave Passmore

Head Coach, Irish Hockey

"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 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! "

Edgar K. Tham

Founder and Chief Sport & Performance Psychologist, SportPsych Consulting (Singapore, Indonesia, Philippines)

Metrifit Athlete Monitoring System
2017-06-12T18:03:35+00:00

Edgar K. Tham

Founder and Chief Sport & Performance Psychologist, SportPsych Consulting (Singapore, Indonesia, Philippines)

"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 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."

Eamonn Fitzmaurice

Kerry Senior Football, Manager

Metrifit Athlete Monitoring System
2017-06-12T14:01:46+00:00

Eamonn Fitzmaurice

Kerry Senior Football, Manager

"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."
"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."

Derek Bol
Strength & Conditioning Coach, Valparaiso University
Metrifit Athlete Monitoring System
2017-06-20T22:26:45+00:00
Derek Bol
Strength & Conditioning Coach, Valparaiso University
"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 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"

Brijesh Patel

Quinnipiac University, Head Strength and Conditioning Coach

Metrifit Athlete Monitoring System
2017-06-12T17:58:50+00:00

Brijesh Patel

Quinnipiac University, Head Strength and Conditioning Coach

"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"

References

Premier Injuries Season Review – 2016 / 2017
The economics of sport: how the cost of injured players has ensured fewer fights by Andrew Leigh
How economists tackle sports injuries by Robert Hudson
Tech and Sports Injury Prevention
New Study highlights benefits of monitoring | Metrifit
The training-injury prevention paradox: should athletes be training smarter and harder? | Tim J Gabbett
The importance of knowing when an athlete has reached load limit | Metrifit