Department of Health and Sports Medicine, Faculty of Physical Education and Sport Sciences, University of Tehran, North Karegar St, P.O.B:1439813117, Tehran, Iran.
Department of Sport Sciences and Physical Education, Faculty of Humanities Science, University of Hormozgan, Bandar Abbas, Iran.
BMC Musculoskelet Disord. 2022 Jul 22;23(1):700. doi: 10.1186/s12891-022-05652-8.
Dynamic knee valgus (DKV) is a prevalent movement impairment widely regarded as a risk factor for lower extremity disorders such as patellofemoral pain syndrome. The present study aimed to investigate the effectiveness of the comprehensive corrective exercise program (CCEP) on kinematics and strength of lower extremities in males with DKV.
Thirty asymptomatic young men with DKV between the ages of 18 and 28 years participated in this study. They were randomly assigned to the intervention (n = 15) and control groups (n = 15). The intervention group performed the CCEP for three sessions per week for eight weeks, while the control group only did activities of daily living. Hip external rotator and abductor muscle strength and three-dimensional lower extremity kinematics consisting of knee varus/valgus, femur adduction/abduction, femur medial/lateral rotation, and tibial medial/lateral rotation were measured at the baseline and post-test. The data were analyzed using the analysis of covariance (ANCOVA).
There were significant improvements in all kinematics variables in the intervention group after the 8-week CCEP. Moreover, the strength of abductor and external rotator muscle improved in the intervention group (P < 0.05).
The CCEP led to substantial improvements in the selected variables of lower extremity kinematics and muscle strength in participants with DKV during a single-leg squat. These results imply that practitioners should adopt a comprehensive approach to pay simultaneous attention to both proximal and distal segments for improving DKV.
The protocol has been approved in the Registry of Clinical Trials (Registration N: IRCT20180821040843N1 ) on 2018-12-30.
动态膝关节外翻（DKV）是一种普遍存在的运动障碍，被广泛认为是下肢疾病的危险因素，如髌股疼痛综合征。本研究旨在探讨综合矫正运动方案（CCEP）对 DKV 男性下肢运动学和力量的影响。
30 名年龄在 18 至 28 岁之间的无症状 DKV 年轻男性参与了本研究。他们被随机分为干预组（n=15）和对照组（n=15）。干预组每周进行三次 CCEP 训练，持续八周，而对照组仅进行日常生活活动。在基线和测试后，测量髋关节外旋肌和外展肌的力量以及包括膝关节内/外翻、股骨内/外展、股骨内/外侧旋转和胫骨内/外侧旋转的三维下肢运动学。使用协方差分析（ANCOVA）对数据进行分析。
干预组在进行 8 周的 CCEP 后，所有运动学变量均有显著改善。此外，干预组的外展肌和外旋肌力量也得到了改善（P<0.05）。
CCEP 可显著改善 DKV 患者单腿深蹲时下肢运动学和肌肉力量的选定变量。这些结果表明，从业者应采用综合方法，同时关注近端和远端节段，以改善 DKV。
该方案已于 2018 年 12 月 30 日在临床试验注册中心（注册号：IRCT20180821040843N1）获得批准。
