Waite Lindsey, Stewart Molly, Sackiriyas Kanikkai Steni Balan, Jayawickrema Jithmie, Almonroeder Thomas Gus
Department of Health Professions, University of Wisconsin-La Crosse, La Crosse, WI, USA.
College of Health Professions, Trine University, Fort Wayne, IN, USA.
J Mot Behav. 2022;54(6):686-693. doi: 10.1080/00222895.2022.2067517. Epub 2022 Apr 27.
The purpose of this study was to examine how instructions promoting different attentional foci influence joint coordination patterns and trial-to-trial coordination variability during landing. Sixteen females performed drop landings with their typical technique (baseline) and after receiving instructions promoting an internal focus and an external focus. The coordination patterns, and trial-to-trial coordination variability, of the sagittal plane hip-knee, hip-ankle, and knee-ankle angle pairings were compared across conditions. While there was no difference in the joint coordination patterns among the conditions, subjects exhibited greater hip-ankle and knee-ankle trial-to-trial coordination variability for the external focus condition, vs. the baseline and internal focus conditions, which may help to explain the improved motor learning outcomes for athletes who train with an external focus.
本研究的目的是探讨促进不同注意力焦点的指导语如何影响着陆过程中的关节协调模式以及每次试验间的协调变异性。16名女性先用她们的典型技术进行了落体着陆（基线），然后在接受了促进内部焦点和外部焦点的指导语后再次进行落体着陆。比较了不同条件下矢状面髋关节-膝关节、髋关节-踝关节和膝关节-踝关节角度配对的协调模式以及每次试验间的协调变异性。虽然不同条件下的关节协调模式没有差异，但与基线和内部焦点条件相比，受试者在外部焦点条件下表现出更大的髋关节-踝关节和膝关节-踝关节每次试验间的协调变异性，这可能有助于解释采用外部焦点训练的运动员运动学习效果的改善。
