A Note on Stability in Force Applied to Control a Repetitive Task With the Legs |
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Authors: | J D Brooke A Chapman L Fischer P Rosenrot |
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Institution: | School of Human Biology, University of Guelph Guelph, Ontario, Canada. |
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Abstract: | The forces applied to pedals during cycling were collected every 40 ms from approximately 29,000 movement repetitions. Intra-cycle mean values of force and its variability were significantly correlated, supporting Schmidt–s impulse variability theory of within-movement activities of the legs. In addition, as mean forces approached peak values, coefficients of variation decreased. From averages taken minute by minute, intra-cycle forces were seen to rise or fall in concert, implying that the pattern as a whole constituted a significant neuromuscular unit of control. |
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