J Orthop Sports Phys Ther. 2011 Sep;41(9):625-32. doi: 10.2519/jospt.2011.3470. Epub 2011 Jul 12.
Block randomized controlled trial.
To investigate whether a strengthening and movement education program, targeting the hip abductors and hip external rotators, alters hip mechanics during running and during a single-leg squat.
Abnormal movement patterns during running and single-leg squatting have been associated with a number of running-related injuries in females. Therapeutic interventions for these aberrant movement patterns typically include hip strengthening. While these strengthening programs have been shown to improve symptoms, it is unknown if the underlying mechanics during functional movements is altered.
Twenty healthy females with excessive hip adduction during running, as determined by instrumented gait analysis, were recruited. The runners were matched by age and running distance, and randomized to either a training group or a control group. The training group completed a hip strengthening and movement education program 3 times per week for 6 weeks in addition to single-leg squat training with neuromuscular reeducation consisting of mirror and verbal feedback on proper mechanics. The control group did not receive an intervention but maintained the current running distance. Using a handheld dynamometer and standard motion capture procedures, hip strength and running and single-leg squat mechanics were compared before and after the strengthening and movement education program.
While hip abductor and external rotation strength increased significantly (P<.005) in the training group, there were no significant changes in hip or knee mechanics during running. However, during the single-leg squat, hip adduction, hip internal rotation, and contralateral pelvic drop all decreased significantly (P = .006, P = .006, and P = .02, respectively). The control group exhibited no changes in hip strength, nor in the single-leg squat or running mechanics at the conclusion of the 6-week study.
A training program that included hip strengthening and movement training specific to single-leg squatting did not alter running mechanics but did improve single-leg squat mechanics. These results suggest that hip strengthening and movement training, when not specific to running, do not alter abnormal running mechanics.
Therapy, level 2b.
随机分组对照试验。
研究针对髋外展肌和髋外旋肌的强化和运动教育计划是否会改变跑步和单腿下蹲时的髋关节力学。
跑步和单腿下蹲时的异常运动模式与女性的许多跑步相关损伤有关。针对这些异常运动模式的治疗干预通常包括髋关节强化。虽然这些强化计划已被证明可以改善症状，但尚不清楚在功能性运动中，潜在的力学是否发生了改变。
招募了 20 名跑步时髋内收过度的健康女性（通过仪器步态分析确定）。跑步者按年龄和跑步距离匹配，并随机分为训练组或对照组。训练组除了进行单腿深蹲训练（包括使用镜像和口头反馈来纠正正确的力学）外，每周还进行 3 次髋部强化和运动教育计划。对照组未接受干预，但保持当前的跑步距离。使用手持测力计和标准运动捕捉程序，在强化和运动教育计划前后比较髋关节力量以及跑步和单腿深蹲力学。
虽然训练组的髋外展肌和外旋肌力量显著增加（P<.005），但跑步时髋关节和膝关节力学没有显著变化。然而，在单腿深蹲时，髋内收、髋内旋和对侧骨盆下降均显著减少（P =.006，P =.006 和 P =.02）。对照组在 6 周研究结束时，髋关节力量以及单腿深蹲和跑步力学均无变化。
包括针对单腿下蹲的髋部强化和运动训练的训练计划并未改变跑步力学，但改善了单腿深蹲力学。这些结果表明，当髋部强化和运动训练不是针对跑步时，不会改变异常的跑步力学。
治疗，2b 级。
