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首页> 外文期刊>Journal of Sports Science and Medicine >Effects of Knee Alignments and Toe Clip on Frontal Plane Knee Biomechanics in Cycling
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Effects of Knee Alignments and Toe Clip on Frontal Plane Knee Biomechanics in Cycling

机译：膝关节矫正和脚趾夹对自行车中额平面膝关节生物力学的影响

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Effects of knee alignment on the internal knee abduction moment (KAM) in walking have been widely studied. The KAM is closely associated with the development of medial knee osteoarthritis. Despite the importance of knee alignment, no studies have explored its effects on knee frontal plane biomechanics during stationary cycling. The purpose of this study was to examine the effects of knee alignment and use of a toe clip on the knee frontal plane biomechanics during stationary cycling. A total of 32 participants (11 varus, 11 neutral, and 10 valgus alignment) performed five trials in each of six cycling conditions: pedaling at 80 rpm and 0.5 kg (40 Watts), 1.0 kg (78 Watts), and 1.5 kg (117 Watts) with and without a toe clip. A motion analysis system and a customized instrumented pedal were used to collect 3D kinematic and kinetic data. A 3 × 2 × 3 (group × toe clip × workload) mixed design ANOVA was used for statistical analysis (p < 0.05). There were two different knee frontal plane loading patterns, internal abduction and adduction moment, which were affected by knee alignment type. The knee adduction angle was 12.2° greater in the varus group compared to the valgus group (p = 0.001), yet no difference was found for KAM among groups. Wearing a toe clip increased the knee adduction angle by 0.95o (p = 0.005). The findings of this study indicate that stationary cycling may be a safe exercise prescription for people with knee malalignments. In addition, using a toe clip may not have any negative effects on knee joints during stationary cycling.
机译：膝关节对准对步行中内部膝关节外展力矩（KAM）的影响已得到广泛研究。 KAM与内侧膝骨关节炎的发展密切相关。尽管膝盖对齐很重要，但尚无研究探讨其在固定骑行过程中对膝盖额面生物力学的影响。这项研究的目的是检查固定脚踏车过程中膝盖对齐和脚趾夹对膝盖额平面生物力学的影响。共有32位参与者（11个内翻，11个中性和10个外翻对准）在以下六个自行车条件下分别进行了五项试验：以80 rpm和0.5 kg（40瓦），1.0 kg（78瓦）和1.5 kg（ 117瓦），带和不带脚趾夹。运动分析系统和定制的仪表踏板用于收集3D运动和动力学数据。使用3×2×3（组×脚趾夹×工作量）混合设计ANOVA进行统计分析（p <0.05）。有两种不同的膝盖额面负荷模式，即内部外展和内收力矩，受膝盖排列类型的影响。与外翻组相比，内翻组的膝关节内收角大12.2°（p = 0.001），但各组之间的KAM没有差异。佩戴脚趾夹可使膝盖内收角增加0.95o（p = 0.005）。这项研究的结果表明，固定骑行对于膝关节畸形患者可能是安全的运动处方。此外，在固定骑行期间，使用脚趾夹可能不会对膝关节产生任何负面影响。

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