Dr. Stephen Cheung, Exercise Physiologist

Dr. Stephen Cheung

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His primary research focus is on the impact of environmental stress on human physiology & performance. He held a Canada Research Chair in Environmental Ergonomics from 2007-2017. Cheung published Advanced Environmental Exercise Physiology – the definitive textbook in the field, in 2010, with a 2nd Edition due out March 2021.

Cheung first discovered bike racing by stumbling across Steve Bauer’s silver medal road race on TV during the 1984 Los Angeles Summer Olympics, saving him from a career as the star benchwarmer on his high school basketball team. Through racing during his undergraduate days in oceanography, Cheung switched to a graduate program in kinesiology and hasn’t looked back at his athletic or scientific choices since.

Cheung has authored more than 120 articles that explores neuromuscular, cardiovascular, respiratory, neural, metabolic, cognitive, and performance responses to multiple environments including heat, cold, hydration, and altitude. He has worked extensively with industry and sports organizations to improve health and safety in the workplace, athletic performance, and equipment design.

Industrial partners have included the Canadian Forces, Toronto Fire Service, Coast Guard & Search and Rescue Canada, ultra-deep mining companies, Garmin, and clothing and equipment manufacturers. Cheung also helped set up the national sport science support program in Atlantic Canada, consulted with Canadian Olympic teams, and helped prepare Amber Neben for her TT gold medal in the heat of Qatar during the 2016 World Championships.

Cheung is also a leader in driving scientific advances in cycling physiology and performance, publishing two books on the science of cycling: Cutting-Edge Cycling and Cycling Science. Since 2002, he has been the Sport Science & Training editor for www.pezcyclingnews.com.

Cheung is also the Chief Sport Scientist for Baron Biosystems and the Xert training software.

One Workout — Many Responses

In this workshop, Dr. Stephen Cheung uses Xert software to illustrate how a single workout can impact athletes differently depending on their phenotype.

Exploring the Relationship Between Muscle Fiber Type, HIT, and Overtraining

Dr. Cheung discusses new research that explores the relationship between muscle fiber-type density, high-intensity training, and an athlete's risk for overtraining.

Shatter the Mental Ceiling on Performance

Physiological improvements are not the only way to maximize performance. Dr. Cheung explores the psychology of feedback, deception, and perception.

How Breathing Is Impacted When Training in the Cold

Breathing cold, dry air while training outdoors can feel painful, but does it hamper your performance? Dr. Stephen Cheung explores.

Why Can’t I Go As Fast When It’s Cold?

Cold temperatures can have a big impact on our physiology. We detail the performance effects of cold temps, and learn how to combat them.

Busting Myths About Riding in the Heat And Cold, with Dr. Stephen Cheung

Episode 111

In this episode our focus is the large number of myths about riding and racing in the heat and cold. We are joined by Dr. Stephen Cheung, one of the world's preeminent environmental physiologists.

Why Fatigue May Be All in Your Mind, with Dr. Stephen Cheung

Episode 38

Today Stephen Cheung differentiates some physiological causes of fatigue, including muscle damage, glycogen depletion, body temperature, and why no one of these reasons fully explains fatigue, despite what some researchers might tell you.

How to Train in the Cold

Episode 35

We explore the physiological effects of training in the cold, from muscle damage to the increased caloric demands and how to stay warm.