Changes in coordination and its variability with an increase in running cadence
Changes in coordination and its variability with an increase in running cadence
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DOI：
10.1080/02640414.2015.1112021
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发表时间：
2016-08-01
影响因子：
3.4
通讯作者：
Boyer, Katherine A.
中科院分区：
文献类型：
--
作者：
Hafer, Jocelyn F.;Silvernail, Julia Freedman;Boyer, Katherine A.
关节力学的改变与常见的过度使用损伤有关。健康跑步者跑步节奏的增加已被证明可以改善与受伤有关的几个参数，但产生这些变化的运动重组尚未得到研究。这项研究的目的是确定跑步者是否会随着节奏的急剧增加而改变他们的节段协调和协调变异性。数据是在10名未受伤的跑步者以他们喜欢的配速在地上跑时收集的，他们的配速比他们喜欢的配速高10%。计算了所选股骨-小腿和小腿-足对的节段协调性和协调性变异性，并计算了所选膝关节力学。配对t检验用于检查首选和增加节奏条件之间的差异。随着节奏的增加，膝关节屈曲峰值减少，膝关节屈曲峰值、内旋和小腿内旋的发生时间较晚。部分协调性发生改变，主要发生在中后期。协调变异性随着所有夫妇和步态阶段的节奏增加而下降。这些结果表明，检查协调及其变异性可以深入了解干预诱导损伤的风险。
Alterations in joint mechanics have been associated with common overuse injuries. An increase in running cadence in healthy runners has been shown to improve several parameters that have been tied to injury, but the reorganisation of motion that produces these changes has not been examined. The purpose of this study was to determine if runners change their segment coordination and coordination variability with an acute increase in cadence. Data were collected as ten uninjured runners ran overground at their preferred cadence as well as a cadence 10% higher than preferred. Segment coordination and coordination variability were calculated for select thigh-shank and shank-foot couples and selected knee mechanics were also calculated. Paired t-tests were used to examine differences between the preferred and increased cadence conditions. With increased cadence, there was a decrease in peak knee flexion and a later occurrence of peak knee flexion and internal rotation and shank internal rotation. Segment coordination was altered with most changes occurring in mid-late stance. Coordination variability decreased with an increase in cadence across all couples and phases of gait. These results suggest examination of coordination and its variability could give insight into the risk of intervention-induced injury.