Endurance

"When launched, WKO4 introduced the Power Duration Model, a robust construct of the power duration relationship for cyclists designed by Dr. Andrew Coggan. This model is the foundation of a number of analytical tools in WKO4 and allows for the tracking of new training metrics capable of giving us deeper insight into an athlete’s ability and fitness.

Initially, Power Duration Curve metrics featured Pmax, Functional Reserve Capacity (FRC), and modeled Functional Threshold Power (mFTP). These allowed tracking of sprint power, anaerobic work capacity, and threshold power. In the most recent feature release of WKO4, Dr. Coggan has introduced the new tracking metric of stamina to assist coaches and athletes in tracking the development of fatigue resistance over prolonged efforts. The purpose of this article is to define stamina and describe the basis of this new metric.

Introduction to Stamina

Stamina in endurance sports is the ability (both physically and mentally) to keep performing for a long period of time. All endurance sports require stamina, although some—such as Ironman distance triathlons, marathon running, and long endurance events—require more stamina than others. Developing peak physical condition results in endurance athletes having a high degree of stamina because their hearts, lungs, and muscles all function at a high level of efficiency.

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