Jia Sheng-Wei, Yang Fan, Wang Yi, Guo Tongtong, Lam Wing-Kai
Li Ning Sports Science Research Center, Li Ning (China) Sports Goods Company Limited, Beijing 101111, China.
Department of Physical Education and Research, China University of Mining and Technology-Beijing, 100083 Beijing, China.
Appl Bionics Biomech. 2022 May 29;2022:5165781. doi: 10.1155/2022/5165781. eCollection 2022.
This study examined the influence of shoe bending stiffness on lower extremity energetics in the take-off phase of consecutive jump.
Fifteen basketball and volleyball players wearing control shoes and stiff shoes performed consecutive jumps. Joint angle, angular velocity, moments, power, jump height, take-off velocity, take-off time, and peak vertical ground reaction force data were simultaneously captured by motion capture system and force platform. Paired -tests were performed on data for the two shoe conditions that fit the normal distribution assumptions, otherwise Wilcoxon signed-rank tests.
There are significant differences ( < 0.05) in take-off velocity and take-off time between stiff and control shoe conditions; the stiff shoes had faster take-off velocity and shorter take-off time than control shoes. There was no significant difference between two conditions in jump height ( = 0.512) and peak vertical ground reaction force ( = 0.589). The stiff shoes had significantly lower MTP dorsiflexion angle and greater joint work than the control shoes ( < 0.05). The MTP range of motion and maximum angular velocity in stiff shoe condition were significantly lower than those in control shoe condition ( < 0.01). However, there are no significant differences between two conditions in kinetics and kinematics of the ankle, knee, and hip joint.
The findings suggest that wearing stiff shoes can reduce the effect of participation of the MTP joint at work and optimize the energy structure of lower-limb movement during consecutive jumps.
本研究探讨了鞋的弯曲刚度对连续跳跃起跳阶段下肢能量学的影响。
15名篮球和排球运动员分别穿着普通鞋和硬鞋进行连续跳跃。通过动作捕捉系统和测力平台同时采集关节角度、角速度、力矩、功率、跳跃高度、起跳速度、起跳时间以及垂直地面反作用力峰值等数据。对符合正态分布假设的两种鞋条件下的数据进行配对t检验，否则进行Wilcoxon符号秩检验。
硬鞋和普通鞋条件下的起跳速度和起跳时间存在显著差异（P<0.05）；硬鞋的起跳速度更快，起跳时间更短。两种条件下的跳跃高度（P = 0.512）和垂直地面反作用力峰值（P = 0.589）无显著差异。硬鞋的跖趾关节背屈角度显著低于普通鞋，关节做功则大于普通鞋（P<0.05）。硬鞋条件下的跖趾关节活动范围和最大角速度显著低于普通鞋条件（P<0.01）。然而，两种条件下踝关节、膝关节和髋关节的动力学和运动学指标无显著差异。
研究结果表明，穿着硬鞋可减少跖趾关节在工作中的参与作用，并优化连续跳跃过程中下肢运动的能量结构。
