Nguyen Anh Phong, Bosquet Laurent, Belaoued Rayan, Detrembleur Christine, Mahaudens Philippe
Neuromusculoskeletal Lab, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, Brussels, Belgium.
The Running Clinic, Lac Beauport, QC, Canada.
Int J Sports Physiol Perform. 2025 Mar 4;20(5):653-658. doi: 10.1123/ijspp.2024-0375. Print 2025 May 1.
This study aimed to report (1) the correlation between net metabolic cost (NMC) of running and Achilles tendon (AT) and ankle plantar flexor passive stiffness and (2) explore the relationship between passive stiffness and key running biomechanics.
Twenty-two male recreational runners participated in this study. The runners performed a 5-minute run at 50% of their maximal aerobic speed as a warm-up on an instrumented treadmill, followed by a 6-minute run at 65% of their maximal aerobic speed wherein NMC was recorded. Passive stiffness was measured using a myotonometry device both before and after the run.
There was a negative linear relationship between NMC and AT stiffness. NMC and prerun AT stiffness demonstrated a significant negative correlation between leg stiffness and a significant positive correlation with braking peak force and step length. Moreover, we observed an increase in stiffness between prerun and postrun measurements at rest for the AT and both gastrocnemius muscles.
Greater AT stiffness measured at rest is correlated with lower NMC.
本研究旨在报告（1）跑步的净代谢成本（NMC）与跟腱（AT）及踝关节跖屈肌被动僵硬度之间的相关性，以及（2）探讨被动僵硬度与关键跑步生物力学之间的关系。
22名男性休闲跑步者参与了本研究。跑步者在装有仪器的跑步机上以其最大有氧速度的50%进行5分钟跑步作为热身，随后以其最大有氧速度的65%进行6分钟跑步，期间记录NMC。在跑步前后使用肌动测量仪测量被动僵硬度。
NMC与AT僵硬度之间存在负线性关系。NMC与跑步前AT僵硬度在腿部僵硬度方面呈显著负相关，与制动峰值力和步长呈显著正相关。此外，我们观察到休息时跟腱和双侧腓肠肌在跑步前和跑步后测量的僵硬度有所增加。
休息时测量的较高跟腱僵硬度与较低的净代谢成本相关。
