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Practice improves even the simplest movements |
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| Authors: | G. L. Gottlieb D. M. Corcos S. Jaric G. C. Agacrwal |
| Affiliation: | (1) Department of Physiology, Rush Medical College, 1753 West Congress Parkway, 60612 Chicago, IL, USA;(2) Department of Physical Education, University of Illinois at Chicago, 60612 Chicago, IL, USA;(3) Department of Biomechanics, Faculty of Physical Education and Institute for Medical Research, Belgrade, Yugoslavia;(4) Departments of Electrical Engineering and Computer Science, and Bioengeneering, University of Illinois at Chicago, 60612 Chicago, IL, USA |
| Abstract: | Summary Three subjects practiced accurate, fast elbow flexions of 54° to a 3° wide target. Movements of 36°, 54° and 72° were then tested. Comparison over the three distances showed that the normally monotonic relationship between movement distance and movement time is alterable by specific training. Subjects learn to go faster over the practiced distance by refining their neural commands to the muscles. The benefits of practice only partially transfer to other distances. We conclude that many of the relationships seen among movement variables in simple tasks are plastic in nature and affected by prior experience. |
| Keywords: | Voluntary movement Motor skill learning Electromyogram Practice Muscle activation |
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