The Limits of Human Performance - World Extreme Medicine

Have we reached the limits of human performance? And what happens to athlete health when we push those limits?

In this session from the World Extreme Medicine Conference Vault, recorded at WEM 2022, Greg Whyte explores what world records can tell us about the limits of speed and endurance. From Roger Bannister’s four-minute mile to the evolution of the cycling hour record, he looks at how physiology, psychology, technology and access to sport have shaped what athletes can achieve.

Greg also takes us inside his team’s challenge to run seven marathons on seven continents, going from Antarctic cold to the heat and humidity of Panama within 24 hours. It’s a case study in how quickly the demands on an athlete can change, and why individual experience, preparation and medical support matter.

For anyone interested in sports science, endurance events or extreme medicine, this talk asks what it takes to go faster or further, and what clinicians need to consider when supporting people who are pushing their own limits.

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Intended Learning Outcomes

By the end of this session, viewers should be able to:

Interpret trends in world-record performance and explain why a plateau alone cannot establish a biological limit.
Explain how cardiac output, the blood’s oxygen-carrying capacity and oxygen use by working muscles contribute to maximal aerobic capacity (VO₂ max).
Describe how psychological barriers, access to sport and advances in equipment can influence performance and the progression of world records.
Explain how heat, humidity, cold and altitude can affect endurance performance and athlete health.
Identify how an athlete’s conditioning, experience and available support can inform medical planning and decisions about when to intervene during an ultra-endurance event.