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1 Departments of Physical Education and Physiology, University of Edinburgh, Edinburgh, Scotland
Thirty-four healthy subjects of different ages and sex have been studied during exercise on a motor-driven treadmill. Heart rate was measured continuously, oxygen consumption was measured during the steady state of exercise, and in 15 subjects the maximum oxygen consumption was also determined. From these data three standard indices of working capacity were calculated, together with an index based upon the "pulse deficit" of early exercise, for comparison with each other and with the maximum oxygen consumption. The "pulse deficit index" was found to express relative working capacity slightly better than any of the standard indices.
working capacity and heart rate; pulse deficit of exercise
Submitted on November 19, 1963
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