ATP and Muscle Fatigue

Table 4: Muscle Fatigue Data
Trial Time (seconds)
Trial 1 52
Trial 2 45
Trial 3 48

Post-Lab Questions

1. What happened to the time intervals between Trial 1 and Trial 3? What caused this change?
2. Identify three muscles which were engaged during the wall-sit.
3. Explain the biochemical reasoning behind muscle fatigue. ”

• muscle fibers lack of ATP and calcium