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Gender differences in fatigue explained by the use of the body's aerobic pathways

scle activation).

Results

The results support the hypotheses that women fatigue less than men, but when deprived of oxygen, they fatigue to the same extent.

Conclusions

This effort examined only one muscle, the tibialis anterior (upper two-thirds of lateral surface of tibia, interosseous membrane, and intermuscular septum). The researcher cautions that results might well vary for different muscles. Further, the findings do not explain the mechanism of the "oxidative advantage" in women. One reason could be due to more efficient and increased oxygen delivery or to a greater oxidative capacity to utilize the oxygen that is delivered to the muscle, or a combination of the two. Finally, the difference in fatigue is likely task-dependent and might change if the type of exercise changed.


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Contact: Donna Krupa
703-967-2751
American Physiological Society
22-Apr-2002


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