Electromyographic analysis of the intermittent modifications occurring during the acquisition of a novel throwing skill
Recently, several authors have published evidence that muscle action potentials are modified during the acquisition of a novel motor skill. Most agree that practice results in an improvement in the coordination or the timing of muscle response (Finley, Wirta, and Cody, 1968; Hobart, 1972; Kamon and Gormley, 1968; Payton and Kelley, 1972; Person, 1958). The changes in the integrated electrical activity attributable to practice have been investigated by several authors, with each producing different results. Brush (1966) found no changes attributable to practice; Finley et al. (1968) found an increase; and Payton and Kelley (1972) found a decline in the integrated electrical activity of one muscle and no change in another. Finley and Wirta (1967), supported by Hobart (1972), suggested that a shift in the electrical activity of the muscles may occur because of practice. Some muscles increase their activity, others decrease, each contributing to a smoother performance of the task.
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- Brush, F. C. 1966. Patterns of movement and associated electrical muscle activity in college women of high and low motor ability. Unpublished Ph.D. dissertation, The University of Maryland, College Park, Md.Google Scholar
- Hobart, D. J. 1972. Electromyographic and cinematographic analysis of the modifications occurring during the acquisition of a novel throwing task. Unpublished Ph.D. dissertation, The University of Maryland, College Park, Md.Google Scholar
- Person, R. S. 1958. An electromyographic investigation on coordination of the activity of antagonist muscles in man during the development of a motor habit. Pavlov J. Higher Nerv. Activ. 8: 13–23.Google Scholar
- Vorro, J. R., and D. J. Hobart. 1974. Electromyographical analysis of the intermittent modifications occurring during the acquisition of a novel throwing skill. In:R. C. Nelson and C. A. Morehouse (eds.), Biomechanics IV, University Park Press, Baltimore, and S. Karger, Basel.Google Scholar