學院

醫學院

系所

職能治療學系

題名

Effects of task constraints on reaching kinematics in healthy adults

作者

吳錦喻 ( WU CHIN-YU ) ; 林克忠 ( LIN KEH-CHUNG ) ; * 林克忠 ( LIN KEH-CHUNG )

期刊名稱

Perceptual and Motor Skills(SSCI 期刊) v.100 n.3 pp.983-994

發表日期

2005

著作性質

原始論著

語文

英文

系統號

00018309

摘要

Understanding the control of movement requires an awareness of how tasks constrain movements. The present study investigated the effects of two types of task constraints-- spatial accuracy (effector size) and target location--on reaching kinematics. 15 right-handed healthy young adults (7 men, 8 women) whose mean age was 23.6 yr. (SD=3.9 yr.) performed the ringing task under six conditions, formed by the crossing of effector size (larger vs smaller size) and target location (left, right, or a central position). Significant main effects of effector size and target location were found for peak velocity and movement time. There was a significant interaction for the percentage of time to peak velocity. The findings suggested that task constraints may modulate movement performance in specific ways. Effects of effector size might be a consequence of feedforward and feedback control, and location effects might be influenced by both biomechanical and neurological factors.