Muscle Fatigue Lab Report

The final results of the experiment showed that the area under the graph of the absolute values of the EMG is a linear relation to the strength of the muscle contraction. This is due to the amount of force a muscle produce. As I squeezed the bulb in my hand harder, the duration of the burst of activity increases with the duration of the muscle contraction. So depending on the amount of fibers participating in the contractions this can contribute to the graded contractions. As my grip became tighter the fibers moved closer together at an increasing rate creating a sustained contraction called tetanus.

Muscle fatigue is the decline in ability of muscle to generate force. The main causes of muscle fatigue are nervous fatigue and metabolic fatigue.