What is one consequence of muscle fatigue?

Muscle fatigue leads to a decline in the ability of muscle fibers to generate force and perform at optimal levels, which ultimately results in reduced performance. When muscles become fatigued, they are less able to contract effectively, impacting not just strength but also the ability to sustain prolonged activity. This phenomenon can manifest in various forms, including decreased strength, slower reaction times, and diminished overall physical capacity. It influences athletic performance significantly, as fatigued muscles cannot maintain the same level of exertion as rested muscles.

While the other options suggest positive outcomes like improved endurance, increased power output, or enhanced recovery, these are not typically associated with the state of muscle fatigue. Improved endurance or power output necessitates effective muscle function and fitness levels that would not be present during fatigue. Enhanced recovery is also more indicative of a restful state rather than a fatigued one. Thus, the only logical consequence of muscle fatigue is the detrimental effect on performance.