Summary
A group of twenty male subjects were given 20 isometric wrist flexion trials on each limb. Two weeks later the measurement schedule was repeated on the left wrist (N = 10) and the right wrist (N = 10). Each trial was a five-second maximum exertion followed by a 30-second rest period. Compared to the first test session, the retest session two weeks later showed an improvement in absolute strength of 8.7 and 6.0 percent for right and left wrists respectively. A mean improvement in strength over all trials of 14.1 and 11.9 percent resulted for right and left wrists respectively as well.
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This investigation was supported in part by National Institutes of Health Research Grant NB-05305-01.
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Kroll, W. Measurement schedule effects upon isometric endurance. Int. Z. Angew. Physiol. Einschl. Arbeitsphysiol. 21, 224–229 (1965). https://doi.org/10.1007/BF00694938
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DOI: https://doi.org/10.1007/BF00694938