SUBJECTIVE ESTIMATION OF EFFORT, RESERVE, AND ISCHEMIC PAIN.
ARMY MEDICAL RESEARCH LAB FORT KNOX KY
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Two studies were conducted to compare 1 ratings of pain and effort induced by a muscle contraction maintained to the limit of endurance and 2 estimates of effort and reserve using five- and ten-point scales both covering the same range of sensations. No overall differences were found between the ratings of pain and effort, though there was statistical evidence that the two scales diverged as the contraction time increased, or as the sensations increased in intensity. The rate of growth of the sensations of pain and effort were influenced by the strength of the muscle contraction. The ratings of effort and reserve were highly correlated, and significantly different only for the five-point scale. There was no indication of a divergence of the ratings of effort and reserve with contraction time. The results of both studies indicate that Ss are capable of reliably scaling the subjective experiences produced by strenuous physical exertions. Author
- Anatomy and Physiology