Effects of variations in force on fractionated reaction time in simple and choice conditions |
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| Authors: | M Ito |
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| Institution: | Department of Health and Physical Education, Faculty of Education, Shinshu University, Nagano City, Japan. |
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| Abstract: | The present study examined the effects of force output on fractionated reaction time under simple and choice conditions. 20 subjects were required to react and produce a designated force as soon as possible after a visual stimulus. Five different levels of force were 10, 30, 50, 70, and 90% of the maximum grip strength of the subjects. Analysis showed that reaction time (RT) changed as a function of force in both conditions, with the longest RT occurring at the 70% condition. The same pattern was also evident for premotor time. These findings suggest that the changes in RT with increases in force are mediated predominantly by central rather than peripheral processes. |
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