스포츠심리학 / 노인의 동작느림현상에 대한 인과성 연구 = A study on slowing in movement of the elderly

다국어 초록 (Multilingual Abstract)

The purpose of the present study was to evaluate the effect of four factors (increased noise-to-force ratio, less efficient perceptual feedback, strategy differences, ability to produce force) as explanations for movement slowing with age. Subjects ware 22 right-hand dominant younger adults and older adults. The older subjects was the ages of 65-75 (mean ague of 71.23), younger adults was the ages of 20-30 (mean age of 25.76).
The results of experiment were as follows;
First, for younger adults, the best fitting equation had an intercept of .0081 and a slope of -3.194, with an R²=.77174, for older adults, the bed fitting equation had an intercept of .0088 and a slope of .436, with an R².7282. This result clearly shows that the older subjects differ from the adults. Two, older subjects spent more time in verification duration of movement than did the adults. Three, there was a significant effect of penalty condition. That is, accuracy increased as penalty condition increased far the younger adults, but not the older subjects. Four, the younger adults used more force than did the older adults. But the older subjects in no-accuracy constraints task is equal to that produced by the younger adults in accuracy constraints task.
In conclusion, the results of the present study suggest that four factors(increased noise-to-force ratio, less efficient perceptual feedback, strategy differences, ability to produce force) can play a role as explanations for movement slowing with age.