Acceleration and Jerk After a Jump Stabilization Task in Individuals With and Without Chronic Ankle Instability

混蛋 加速度 跳跃 平衡(能力) 跳跃的 运动学 物理医学与康复 控制理论(社会学) 垂直跳跃 数学 模拟 医学 计算机科学 物理 控制(管理) 人工智能 经典力学 量子力学 生理学
作者
Kyle B. Kosik,Kathryn Lucas,Matthew C. Hoch,Jacob T. Hartzell,Katherine A. Bain,Phillip A. Gribble
出处
期刊:Journal of Applied Biomechanics [International Society of Biomechanics]
卷期号:37 (4): 359-364 被引量:1
标识
DOI:10.1123/jab.2020-0104
摘要

Studies have demonstrated that individuals with chronic ankle instability (CAI) have diminished dynamic stability. Jerk-based measures have been utilized to examine dynamic balance because of their ability to quantify changes in acceleration and may provide an understanding of the postural corrections that occur during stabilizing following a jumping task. The purpose of this study was to compare acceleration and jerk following a jump stabilization task between individuals with CAI and the uninjured controls. Thirty-nine participants volunteered to participate in this case control study. Participants completed a jump stabilization task requiring them to jump off 2 feet, touch a marker set at 50% of their maximal vertical jump height, land on a single limb, and maintain balance for 3 seconds. Acceleration was calculated as the second derivative, and jerk was calculated as the third derivative of the displacement of the resultant vector position. Participants with CAI had greater acceleration (mean difference = 55.6 cm/s2; 95% confidence interval, 10.3 to 100.90; P = .017) and jerk compared with the uninjured controls (mean difference = 1804.5 cm/s3; 95% confidence interval, 98.7 to 3510.3; P = .039). These results suggest that individuals with CAI made faster and more frequent active postural control corrections to regain balance following a jump compared with the uninjured controls.
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