Abstract
The effect of oxygen inhalation on block-stringing performance of 12 subjects was studied at hand temperatures of 32.7 C in a control room environment of 29 C and after cooling the hands to 16.0 C in a cold (5 C) environment. A similar slight but significant improvement in manual performance accompanied oxygen inhalation under both conditions. This is interpreted as indicating the existence of suboptimal neural and/or muscular activity during air breathing in both situations. If hand cooling had affected the same neural and/or muscular elements as oxygen, lowering activity even further from the optimal level, this should have exaggerated the O2 effect. In view of the absence of such a response, it would seem that hand cooling and oxygen influence different neural and/or muscular elements, and their effects on manual performance are not directly related. Submitted on August 31, 1961
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