Kalkhoven Judd T, Watsford Mark L
a Faculty of Health , University of Technology Sydney , Sydney , Australia.
J Sports Sci. 2018 May;36(9):1022-1029. doi: 10.1080/02640414.2017.1349921. Epub 2017 Jul 12.
This study investigated the relationship between several measures of lower-body stiffness and physical performance variables in 22 sub-elite male football players (mean ± SD; 21.9 ± 1.5 yr; 1.79 ± 0.06 m; 72.2 ± 7.2 kg). The participants were assessed for individual muscle stiffness of the Rectus Femoris (RF), Biceps Femoris (BF) and Medial Gastrocnemius (MG) muscles and vertical stiffness (Kvert) was also assessed assessed running acceleration, maximal sprint speed, agility, vertical jumping and muscular strength. Pearson's correlations quantified the relationships and participants were also separated into relatively stiff (SG) and compliant groups (CG) for each variable. When ranked by Kvert the SG exhibited superior performance during sprinting, agility, jumping and strength (p ≤ 0.05) and when ranked by RF stiffness, SG exhibited superior sprint, agility and drop jump performance (p ≤ 0.05), while MG and BF stiffness were not related to performance. Higher stiffness appears to be beneficial to athletic performance for football players and therefore it may be beneficial for practitioners working with athletes that are required to perform dynamic activities to consider the contribution of stiffness to athletic performance.
本研究调查了22名次精英男性足球运动员（平均±标准差；21.9±1.5岁；1.79±0.06米；72.2±7.2千克）下肢刚度的几种测量指标与身体性能变量之间的关系。对参与者的股直肌（RF）、股二头肌（BF）和腓肠肌内侧头（MG）的个体肌肉刚度进行了评估，同时还评估了垂直刚度（Kvert）、跑步加速度、最大冲刺速度、敏捷性、垂直跳跃和肌肉力量。皮尔逊相关性量化了这些关系，并且还根据每个变量将参与者分为相对僵硬组（SG）和顺应性组（CG）。按Kvert排名时，SG在短跑、敏捷性、跳跃和力量方面表现更优（p≤0.05）；按RF刚度排名时，SG在短跑、敏捷性和下落跳方面表现更优（p≤0.05），而MG和BF的刚度与性能无关。较高的刚度似乎对足球运动员的运动表现有益，因此对于与需要进行动态活动的运动员合作的从业者来说，考虑刚度对运动表现的贡献可能是有益的。
