During a 100m dash, a sprinter's muscle fibers undergo rapid fatigue. Which process is primarily responsible for this fatigue?
Q1. During a 100m dash, a sprinter's muscle fibers undergo rapid fatigue. Which process is primarily responsible for this fatigue?
Answer: Lactic acid production
Explanation: Lactic acid buildup in muscles leads to fatigue, but it's not the primary cause; anaerobic glycolysis produces lactic acid.