Effects of progressive resistance strength training on knee biomechanics during single leg step-up in persons with mild knee osteoarthritis
Effects of progressive resistance strength training on knee biomechanics during single leg step-up in persons with mild knee osteoarthritis
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DOI：
10.1016/j.clinbiomech.2011.03.006
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发表时间：
2011-08-01
影响因子：
1.8
通讯作者：
de Oliveira, Anamaria Siriani
中科院分区：
文献类型：
--
作者：
McQuade, Kevin James;de Oliveira, Anamaria Siriani
背景资料：本研究的目的是确定如果在初级膝关节伸肌和屈肌的力量增加将直接影响净膝关节力矩在一个共同的功能任务在人与膝骨关节炎。方法：一个探索性的单样本临床试验与前后治疗措施被用来研究志愿者的临床诊断轻度膝骨关节炎（OA）在一个膝盖。受试者参加了一个单独监督的训练计划，每周3次，持续8周，包括膝关节伸肌和膝关节屈肌的渐进式阻力练习。培训前和培训后的结果评估包括：1。净膝关节内力矩，2。初级膝关节伸肌和屈肌的肌电图，和3。膝关节疼痛和功能的自我报告测量。下肢关节力矩的分布占总支持力矩的百分比也investigated.Findings：疼痛，症状，日常生活活动，生活质量，僵硬，功能评分显示出显着改善后的力量训练。训练后膝关节内外翻和髋关节内旋力矩增加，但无统计学显著性变化。有没有显着差异，在肌肉共同收缩激活的股四头肌和Hamstrings.Interpretation：虽然运动仍然是一个重要的因素，OA管理，这项研究的结果表明，改善功能，疼痛和其他症状，作为一个结果的力量训练可能没有因果关系的净关节力矩的特定生物力学变化。(C)2011爱思唯尔有限公司保留所有权利。
Background: The goal of this study was to determine if increasing strength in primary knee extensors and flexors would directly affect net knee joint moments during a common functional task in persons with knee osteoarthritis.Methods: An exploratory single sample clinical trial with pre-post treatment measures was used to study volunteers with clinical diagnosis of mild knee osteoarthritis (OA) in one knee. Subjects participated in an individually supervised training program 3 times a week for eight weeks consisting of progressive resistive exercises for knee extensors and knee flexors. Pre and post training outcome assessments included: 1. Net internal knee joint moments, 2. Electromyography of primary knee extensors and flexors, and 3. Self-report measures of knee pain and function. The distribution of lower extremity joint moments as a percent of the total support moment was also investigated.Findings: Pain, symptoms, activities of daily life, quality of life, stiffness, and function scores showed significant improvement following strength training. Knee internal valgus and hip internal rotation moments showed increasing but non-statistically significant changes post-training. There were no significant differences in muscle co-contraction activation of the Quadriceps and Hamstrings.Interpretation: While exercise continues to be an important element of OA management, the results of this study suggest improvements in function, pain, and other symptoms, as a result of strength training may not be causally related to specific biomechanical changes in net joint moments. (C) 2011 Elsevier Ltd. All rights reserved.