期刊
JOURNAL OF MOTOR BEHAVIOR
卷 32, 期 4, 页码 337-345出版社
HELDREF PUBLICATIONS
DOI: 10.1080/00222890009601384
关键词
ball throwing; coordination; motor skill learning; variability
The consistency and coordination of release parameters in ball-throwing movements were investigated. The authors used a newly developed index of coordination for release parameters (ICRP) that quantifes the degree of improvement of performance consistency caused by compensatory relationships among parameters (i.e., not caused by consistency of parameters), Eight participants practiced for 150 trials, with the nondominant hand, a ball-throwing task aimed at a stationary target. The magnitude of the ball-release velocity vector, among release parameters, as well as the performance was found to become consistent with practice. The ICRP score suggested that the release parameters were complementarily coordinated with one another, and that the coordination improved with practice. Those results indicate that compensatory relationships among varying release parameters contribute to reducing the variability of performance in a ball-throwing task whose goal is accuracy.
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