Immediate After-effects of Overload on Resisted and Nonresisted Speeds of Movement

Abstract

Abstract This study was designed to evaluate: (1) the effects of the application and removal of an overload upon resisted and nonresisted speeds of elbow flexion, and (2) the associated perceptual after-effects. Nineteen men ranging in age from 21 to 37 served as subjects. Two speed tests were used as measures of movement time. One utilized only the mass of the forearm as resistance, and the other used a resistance of 10 percent of the flexion strength score. An additional weight of 20 percent of the static strength score was added as the overload. The four experimental treatments, which included control conditions for both speed tests, were replicated once each week for 3 weeks. The test sequence included six pre-overload, five overload, and six post-overload trials. The subjects related their subjective impressions of the effect of the overload upon speed of movement. These impressions were later compared with actual performance. No statistically significant differences were recorded between performance...