Science Explained

The critical power model is a mathematical approach used to predict an athlete's performance in endurance sports. It is based on the concept that an athlete has a critical power output, which is the highest sustainable power output that can be maintained for a prolonged period without fatigue.

The critical speed model is a mathematical approach used to predict an athlete's performance in endurance sports. It is based on the concept that an athlete has a critical speed, which is the highest sustainable speed that can be maintained for a prolonged period without fatigue.

Variability in endurance sports refers to the fluctuations in power output during a training session or race. It is measured as the ratio of weighted power to average power output.

Heart rate decoupling is a concept used in endurance sports to assess the efficiency of an athlete's cardiovascular system during prolonged exercise.

The energy burn rate refers to the rate at which the body expends energy during exercise or physical activity. It is typically measured in calories or joules per unit of time, such as calories per minute or watts.