Department of Rehabilitation Medicine, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Gait Posture. 2013 Sep;38(4):998-1004. doi: 10.1016/j.gaitpost.2013.05.008. Epub 2013 Jun 14.
Evidence suggests a link between the loading of the Achilles tendon and the magnitude of the ankle internal plantar flexion moment during late stance of gait, which is clinically relevant in the management of Achilles tendinopathy. Some studies showed that rocker shoes can reduce the ankle internal plantar flexion moment. However, the existing evidence is not conclusive and focused on walking and scarce in running. Sixteen healthy runners participated in this study. Lower extremity kinetics, kinematics and electromyographic (EMG) signals of triceps surae and tibialis anterior were quantified for two types of shoes during running and walking. The peak ankle plantar flexion moment was reduced significantly in late stance of running (0.27 Nm/kg; p<0.001) and walking (0.24 Nm/kg; p<0.001) with the rocker shoe compared to standard shoe. The ankle power generation and plantar flexion moment impulse were also reduced significantly when running and walking with the rocker shoe (p<0.001). No significant changes in the knee and hip moments were found in running and walking. A significant delay of the EMG peak, approximately 2% (p<0.001), was present in the triceps surae when walking with rocker shoes. There were no significant changes in the EMG peak amplitude of triceps surae in running and walking. The peak amplitude of tibialis anterior was significantly increased (64.7 μV, p<0.001) when walking with rocker shoes. The findings show that rocker shoes reduce the ankle plantar flexion moment during the late stance phase of running and walking in healthy people.
有证据表明，跟腱负荷与步态后期踝关节内跖屈力矩的大小之间存在关联，这在跟腱病的治疗中具有重要的临床意义。一些研究表明，弧形底鞋可以降低踝关节内跖屈力矩。然而，现有证据并不确定，且主要集中在步行上，在跑步方面的研究较少。本研究纳入了 16 名健康跑步者。在跑步和步行时，两种鞋子的下肢运动力学、运动学和肌电图（EMG）信号（比目鱼肌和胫骨前肌）被定量评估。与标准鞋相比，弧形底鞋在跑步（0.27 Nm/kg；p<0.001）和步行（0.24 Nm/kg；p<0.001）的后期支撑阶段，显著降低了踝关节跖屈力矩峰值。当跑步和步行时使用弧形底鞋，踝关节的功率产生和跖屈力矩冲量也显著降低（p<0.001）。在跑步和步行时，膝关节和髋关节力矩没有明显变化。当使用弧形底鞋步行时，比目鱼肌的 EMG 峰值出现约 2%（p<0.001）的显著延迟。在跑步和步行时，比目鱼肌的 EMG 峰值幅度没有明显变化。当使用弧形底鞋步行时，胫骨前肌的峰值幅度显著增加（64.7 μV，p<0.001）。研究结果表明，在健康人群中，弧形底鞋可降低跑步和步行后期支撑阶段的踝关节跖屈力矩。
