How does body mass index affect average power?

Body mass index (BMI) can impact average power output in physical activities, particularly in sports and exercise. Generally, a higher BMI, which may indicate greater body fat, can lead to decreased efficiency and increased energy expenditure during performance, potentially reducing average power output. Conversely, athletes with a lower BMI may have a more favorable power-to-weight ratio, enhancing their performance in activities requiring speed and endurance. However, it's important to note that BMI does not differentiate between muscle and fat, so individual body composition also plays a crucial role in determining average power.