Comparison between Arm and Leg Exercise in Women and Men

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Abstract
Arm and leg work was performed on bicycle ergometers in sitting position by fourteen women and sixteen men. Heart rate, minute volume of ventilation (V˙E), and oxygen consumption (V˙o2) were measured. Arm exercise was performed until (muscular) exhaustion, leg exercise up to a heart rate of circa 170 beats/min. At comparable work loads arm exercise evoked higher V˙o2, V˙E, and heart rate than leg exercise irrespective of sex. At comparable V˙o2, the heart rate and V˙E were higher during arm work in both sexes, V˙E more so among the men. With the same limbs working, the mechanical efficiency was equal in both sexes. The regression coefficients of heart rate on load or V˙o2 was higher for the women irrespective of work type. A close correlation was obtained between working capacity at a heart rate of 170 beats/min (W170) during leg and arm exercise and between W170 of leg exercise and W150, similarly calculated during arm work. Thus W170 of leg exercise could be calculated from either a maximal or submaximal arm work.

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