THE ERYTHROCYTE COUNT, QUANTITY OF HEMOGLOBIN AND VOLUME OF PACKED CELLS IN NORMAL HUMAN SUBJECTS DURING MUSCULAR INACTIVITY

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Abstract
A statistical comparison of the mean values in 80 subjects sampled after random undetermined activity with those of 80 additional subjects sampled after a 1/2 hr. period of inactivity in the recumbent position showed significantly lower values following rest. A 3rd series of 20 subjects sampled before and after 1-hr. of rest in bed gave similar results. Venous blood was used. Maximum decreases observed were: erythroeytes, 780,000 per cu. mm.; Hb, 3.39 gm. %; volume of packed cells, 5.5 cc. %. Corpuscular volume did not change significantly. The change probably represents the converse of physiological erythro-cytosis, the O2-carrying capacity of the circulating blood being adapted to the lower requirements of the tissues by withdrawal of red cells into the spleen.

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