ANALYSIS OF THE AROUSAL MOTOR-PERFORMANCE RELATIONSHIP IN CHILDREN USING MOVEMENT KINEMATICS
ANALYSIS OF THE AROUSAL MOTOR-PERFORMANCE RELATIONSHIP IN CHILDREN USING MOVEMENT KINEMATICS
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DOI：
10.1123/jsp.7.3.229
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发表时间：
1985-01-01
期刊：
影响因子：
--
通讯作者：
DUDA, JL
中科院分区：
文献类型：
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作者：
BEUTER, A;DUDA, JL
本跨学科研究的目的是通过检查9名受试者在高唤醒和低唤醒条件下的步进运动的运动学特征来评估唤醒对运动表现的影响。从旋转快门摄像机记录原始数据，并通过将视频运动分析仪与微型计算机的数字化板接口自动数字化。髋关节、膝关节和踝关节角度共变的三维轨道图显示，受试者使用了两种不同的策略来完成这项技能。相平面分析显示，在髋关节和膝关节两种情况下，关节位置和速度之间存在紧密耦合。低唤醒和高唤醒条件下运动运动学的差异在踝关节中最为明显，踝关节相平面在高唤醒条件下显示出更多的自我交叉（环路）。有人认为，在高度兴奋的情况下，踝关节曾经自动而平稳的运动现在受到更多的意志控制，而这种控制不那么平稳和有效。提出了本研究的实际意义。
The purpose of this interdisciplinary study was to assess the impact of arousal on motor performance by examining the kinematic characteristics of a stepping motion in high and low arousal conditions on 9 subjects. Raw data were recorded from a rotary shutter video camera and digitized automatically by interfacing the videomotion analyzer with the digitizing board of a microcomputer. Three-dimensional orbital plots of the hip, knee, and ankle angle covariations revealed that the subjects used two different strategies to perform the skill. Phase plane analyses revealed a tight coupling between joint position and velocity in both conditions for the hip and the knee. Differences in movement kinematics between low and high arousal conditions were most visible in the ankle joint whose phase planes displayed an increased number of self-crossings (loops) in the high arousal condition. It was suggested that under high arousal, what was once automatic and smooth in terms of the ankle joint now comes under more volitional control, which is less smooth and efficient. Practical implications of the present study are suggested.