What percentage of body weight loss can decrease work capacity by about 30%?

The answer indicates that a 5% loss in body weight can lead to a significant decrease in work capacity, specifically about 30%. This is an important concept in the context of physical performance and fitness, as even a relatively modest reduction in body weight can have a noticeable impact on an individual's ability to perform physical tasks.

When the body loses weight, especially if the loss is from muscle mass or fluids, it can lead to decreased energy levels, reduced strength, and impaired endurance. This impaired performance is crucial for athletes and fitness enthusiasts to understand because maintaining an optimal weight and body composition is essential for achieving peak performance.

This 5% threshold reflects physiological adaptations and the role that body mass plays in activities that require strength, endurance, and overall physical capability. While smaller percentages of weight loss might not have as pronounced an effect, reaching 5% can significantly challenge physical performance and work capacity.