竞走是一种非常规的竞技步态形式，可在下肢肌肉和肌腱上产生独特的负荷分布。该研究绘制了竞技竞走运动员下肢的结构和机械特性，并与世界田径比赛的成绩点相关联。本研究招募了 14 名国际竞走运动员（7 名男性，7 名女性）。静态超声用于量化肌肉和肌腱的形态特征。等速测力计用于测量小腿三头肌的被动肌腱刚度、跖屈肌和背屈肌的等长（七个膝关节/踝关节角度组合）和等速（四个角速度）强度参数，以及五个角速度下的等速膝关节屈伸强度.r = –0.569, p = 0.034)，120°/s 时的背屈肌强度（r = 0.649，p = 0.016）和 30°/s 时的膝屈肌强度（r = 0.632，p = 0.020）。没有发现等距跖屈或被动刚度特性的关联。总体而言，该研究表明，各种形态和机械特性与竞技跑者的表现有关。这些关联似乎与竞走的特定和独特的生物力学特征有关。
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Morphological and mechanical properties of lower limbs in competitive racewalkers: Associations with performance
Racewalking is an unconventional form of competitive gait that elicits a unique loading profile on lower limb muscles and tendons. This study mapped the structural and mechanical properties of lower limbs in competitive racewalkers and made associations with World Athletics competition performance points. Fourteen international racewalkers (seven men, seven women) were recruited for this study. Static ultrasonography was used to quantify muscle and tendon morphological characteristics. An isokinetic dynamometer was used to measure passive musculotendinous stiffness of the triceps surae, isometric (seven knee/ankle angle combinations) and isokinetic (four angular velocities) strength parameters in the plantarflexors and dorsiflexors, and isokinetic knee flexion and extension strength at five angular velocities. Correlations were found between performance and fascicle length of gastrocnemius medialis (r = –0.569, p = 0.034), dorsiflexor strength at 120°/s (r = 0.649, p = 0.016) and knee flexor strength at 30°/s (r = 0.632, p = 0.020). No associations were found for isometric plantarflexion or passive stiffness properties. Overall, the study showed various morphological and mechanical properties are associated with performance in competitive racewalkers. These associations seem to be related to the specific and unique biomechanical characteristics of racewalking.