Morrison S, Newell K M
Department of Kinesiology, The Pennsylvania State University.
J Mot Behav. 1998 Dec;30(4):323-42. doi: 10.1080/00222899809601347.
In the 2 experiments reported here, the influence of level of force output on interlimb coordination in an isometric force tusk was examined. Healthy adults (N = 8) were required to match a continuous total level of isometric force produced by the output of the two index fingers over a range of force levels (1 % to 80% ot maximum). The results showed that (a) coordination between fingers increased as force level increased; (b) coordination between fingers was less than that of the force output of each finger to the total force, but that difference in relative coordination decreased as target force levels increased; and (c) the regularity of the force output of each finger considered separately was greater than that of the total force. Overall, force level was found to have a small but reliable effect on interlimb coordination within a compensatory action between fingers that reduces task error.
在本文所报告的两项实验中，研究了等长力任务中力输出水平对肢体间协调性的影响。要求8名健康成年人在一系列力水平（最大力的1%至80%）上，匹配由两根食指输出产生的连续等长总力水平。结果表明：（a）随着力水平的增加，手指间的协调性增强；（b）手指间的协调性低于各手指力输出与总力的协调性，但随着目标力水平的增加，相对协调性差异减小；（c）单独考虑时，各手指力输出的规律性大于总力的规律性。总体而言，发现在减少任务误差的手指间补偿动作中，力水平对肢体间协调性有微小但可靠的影响。
