An Examination of Sex-Related Differences in Central and Peripheral Fatigue
MetadataShow full item record
Muscle fatigue is classically defined as an exercise-induced decline in maximal voluntary muscle force or power. The development of muscle fatigue can occur within the muscle (peripheral fatigue), or within the Central Nervous System (CNS; central fatigue). Greater resistance to fatigue has been demonstrated in men compared with women. The purpose of the study was to examine sex-related differences in the site of muscle fatigue, using assessments of central and peripheral fatigue, as well as inhibitory sensory feedback. We hypothesized that force, EMG and M-wave amplitude would decrease with fatigue and, would not recover during occlusion, and would recover after blood flow was returned. We also hypothesized that these fatigue measures would be significantly larger in men than in women. MVC, EMG, M-Wave amplitude, and M-Wave latency data were analyzed. From the analyzed data, we were unable to find a significant difference between males and females for MVC, EMG, M-Wave amplitudes and M-Wave latency.