Human Performance & Biomechanics Laboratory, Department of Kinesiology & Sport Management, Texas Tech University , Lubbock, TX, USA.
J Sports Sci. 2021 Jan;39(1):108-114. doi: 10.1080/02640414.2020.1808277. Epub 2020 Aug 13.
This study examined potential differences between maximally cushioned (MAX) shoes and standard cushioned (STND) shoes during countermovement vertical jump (CMVJ) performance. Twenty-one males (23[2] y; 86.5[15.4] kg; 179.8[6.3] cm) completed eight jumps each in MAX and STND shoes while three-dimensional kinematic and kinetic data were collected. Paired-samples t-tests (α = 0.05) and Cohen's effect sizes (ES) were used to compare the following variables: vertical jump displacement, jump time, hip, knee and ankle joint angles at the start of the countermovement, the end of the unloading phase, the end of the eccentric phase, and at takeoff, peak joint power, and the joint contributions to total lower extremity work during the eccentric and concentric phases. The ankle was more dorsiflexed at the end of the countermovement in the MAX shoe ( = 0.002; ES = 0.55) but greater plantarflexion occurred in the STND shoes at takeoff ( = 0.028; ES = 0.56). No other differences were observed. The result of this study suggests that unique ankle joint angular positioning may be employed when wearing MAX versus STND shoes. Since the unique ankle joint positioning did not alter jump performance, potential MAX footwear users might not need to consider the potential for altered CMVJ performance when determining whether to adopt MAX footwear.
本研究旨在探讨最大缓冲（MAX）鞋和标准缓冲（STND）鞋在反跳垂直跳跃（CMVJ）性能中的潜在差异。21 名男性（23[2]岁；86.5[15.4]kg；179.8[6.3]cm）分别在 MAX 和 STND 鞋中完成了 8 次跳跃，同时收集了三维运动学和动力学数据。使用配对样本 t 检验（α=0.05）和 Cohen 的效应大小（ES）比较以下变量：垂直跳跃位移、跳跃时间、髋关节、膝关节和踝关节在反跳起始时、卸载阶段结束时、离心阶段结束时和起跳时的角度、关节峰值功率以及在离心和向心阶段整个下肢工作的关节贡献。在 MAX 鞋中，踝关节在反跳结束时背屈更大（=0.002；ES=0.55），但在 STND 鞋中，踝关节在起跳时跖屈更大（=0.028；ES=0.56）。没有观察到其他差异。本研究的结果表明，穿着 MAX 鞋与 STND 鞋时，踝关节的角度定位可能会有所不同。由于独特的踝关节定位并没有改变跳跃性能，潜在的 MAX 鞋使用者在决定是否采用 MAX 鞋时，可能不必考虑可能改变 CMVJ 性能的问题。
