Journal of Applied Physiology
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J Appl Physiol 9: 62-64, 1956;
8750-7587/56 $5.00
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Impairment of Manual Dexterity in the Cold

J. S. LeBlanc 1

1 From the Defence Research Northern Laboratory, Fort Churchill, Manitoba, Canada

In an attempt to estimate the factors involved in manual dexterity impairment observed in the cold, the following has been found. When the fingers alone were cooled, performance of tests involving little movement of the joint was only slightly enhanced, whereas the impairment was large when the joint movements were increased. This is interpreted as additional evidence to the hypothesis that the increased viscosity of the synovial fluid is a factor in decreasing finger dexterity in the cold. However, this is not the only factor since cooling of the arm, even when the hands are kept warm, also caused a large decrement in finger dexterity.

Submitted on September 8, 1955




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