Are the arms and legs in competition for cardiac output?

Article Abstract:

Comparison of exercise with the arms and the legs reveals that, although flow to working skeletal muscles is regulated to attenuate hemoglobin desaturation, the increase is limited, and muscle blood flow and oxygenation decrease when both the arms and the legs are engaged at a high intensity. It is suggested that during whole-body exercise in normal people, a restricted blood flow to active skeletal muscles is a manifestation of an attenuated cardiac output following a compromised preload to the heart.

Blood flow, Physiological aspects, Arm, Leg, Cardiac output, Extremities, Lower, Extremities, Upper, Clinical report

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Leg blood flow and VO2 during peak cycle exercise in younger and older women

Article Abstract:

Detailed information is presented to test the hypothesis that leg blood flow and leg O2 extraction during peak exercise are reduced with age in healthy normally active women. It was observed that reduced leg blood flow is a major contributor to the reduced peak systemic VO2 in older nonendurance trained women.

Health aspects, Exercise, Cycling, Women athletes

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