Lower Extremity Strength and Mechanics During Jumping in Women With Patellofemoral Pain
Lower Extremity Strength and Mechanics During Jumping in Women With Patellofemoral Pain
复制标题
DOI：
10.1123/jsr.18.1.76
复制
发表时间：
2009-02-01
影响因子：
1.7
通讯作者：
Davis, Irene S.
中科院分区：
文献类型：
--
作者：
Willson, John D.;Davis, Irene S.
背景：膝股关节疼痛综合征(PFPS)受试者在负重过程中的力学改变可能与下肢无力有关。目的：分析在模拟运动任务中有无PFPS的女性的LE强度、力学以及这些变量之间的关系。设计：病例对照。单位：运动分析实验室。研究对象：20例女性PFPS患者和20例健康女性。主要观察指标：躯干外侧屈曲峰值、髋外展、髋外旋、屈膝、伸膝力量，以及单腿跳跃时髋关节和膝关节的偏移量和角度冲量。结果：PFPS患者产生的髋外展力、髋外旋力和躯干侧屈力均低于对照组。PFPS组也表现出更大的髋关节内收偏移和髋关节外展冲动。强度测量和LE力学之间的关联性很低。结论：患有PFPS的女性表现出特定的弱点，并改变了LE机制。然而，疲软与观察到的力学差异并不高度相关。
Context: Lower extremity (LE) weakness might be associated with altered mechanics during weight bearing in subjects with patellofemoral Pain syndrome (PFPS). Objective: To analyze LE strength, mechanics, and the association between these variables among women with and without PFPS during a simulated athletic task. Design: Case control. Setting: Motion-analysis laboratory. Subjects: 20 women with PFPS and 20 healthy women. Main Outcome Measures: Peak isometric lateral trunk-flexion, hip-abduction, hip external-rotation, knee-flexion, and knee-extension strength, as, well as hip- and knee-joint excursions and angular impulses during single-leg jumps. Results: PFPS subjects produced less hip-abduction, hip external-rotation, and trunk lateral-flexion force than the control group. The PFPS group also demonstrated greater hip-adduction excursion and hip-abduction impulses. The association between the strength Measurements and LE mechanics was low. Conclusions: Women with PFPS demonstrate specific weaknesses and altered LE mechanics. Weakness is not, however, highly correlated with observed differences in mechanics.