Greuel Henrike, Herrington Lee, Liu Anmin, Jones Richard K
School of Health Science, University of Salford, Frederick Road Campus, Brian Blatchford building, PO30, Salford M66PU, Greater Manchester, UK, UK.
Gait Posture. 2017 Sep;57:141-146. doi: 10.1016/j.gaitpost.2017.06.001. Epub 2017 Jun 3.
Previous research has reported a prevalence of running related injuries in 25.9% to 72% of all runners. A greater hip internal rotation and adduction during the stance phase in running has been associated with many running related injuries, such as patellofemoral pain. Researchers in the USA designed a treatment device 'the Powers™ strap' to facilitate an external rotation of the femur and to thereby control abnormal hip and knee motion during leisure and sport activities. However, to date no literature exists to demonstrate whether the Powers™ strap is able to reduce hip internal rotation during running. 22 healthy participants, 11 males and 11 females (age: 27.45±4.43 years, height: 1.73±0.06m, mass: 66.77±9.24kg) were asked to run on a 22m track under two conditions: without and with the Powers™ strap. Three-dimensional motion analysis was conducted using ten Qualisys OQUS 7 cameras (Qualisys AB, Sweden) and force data was captured with three AMTI force plates (BP600900, Advanced Mechanical Technology, Inc.USA). Paired sample t-tests were performed at the 95% confidence interval on all lower limb kinematic and kinetic data. The Powers™ strap significantly reduced hip and knee internal rotation throughout the stance phase of running. These results showed that the Powers™ strap has the potential to influence hip motion during running related activities, in doing so this might be beneficial for patients with lower limb injuries. Future research should investigate the influence of the Powers™ strap in subjects who suffer from running related injuries, such as patellofemoral pain.
先前的研究报告称，在所有跑步者中，与跑步相关的损伤发生率在25.9%至72%之间。跑步站立阶段髋关节内旋和内收幅度增大与许多与跑步相关的损伤有关，如髌股疼痛。美国的研究人员设计了一种治疗装置“Powers™束带”，以促进股骨外旋，从而在休闲和体育活动中控制髋关节和膝关节的异常运动。然而，迄今为止，尚无文献证明Powers™束带是否能够减少跑步时的髋关节内旋。研究邀请了22名健康参与者，11名男性和11名女性（年龄：27.45±4.43岁，身高：1.73±0.06米，体重：66.77±9.24千克），让他们在两种情况下在22米的跑道上跑步：不使用和使用Powers™束带。使用10台Qualisys OQUS 7摄像机（瑞典Qualisys AB公司）进行三维运动分析，并用3块AMTI测力板（BP600900，美国先进机械技术公司）采集力数据。对所有下肢运动学和动力学数据进行95%置信区间的配对样本t检验。Powers™束带在跑步的整个站立阶段显著减少了髋关节和膝关节的内旋。这些结果表明，Powers™束带有可能在与跑步相关的活动中影响髋关节运动，这样做可能对下肢受伤的患者有益。未来的研究应调查Powers™束带对患有与跑步相关损伤（如髌股疼痛）的受试者的影响。
