Lanferdini Fábio Juner, Viera Heinrich Leon Souza, Gidiel-Machado Lucas, Leite-Nunes Tiago Dutra, Soldatelli Isadora Miotto, Porporatti Lauren Benetti, Matheus Silvana Correa, Dos Santos Daniela Lopes, Saccol Michele Forgiarini, Royes Luiz Fernando Freire
Biomechanics Laboratory, Physical Education and Sports Center, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.
Biomechanics Laboratory, Physical Education and Sports Center, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil.
J Biomech. 2025 Feb;180:112491. doi: 10.1016/j.jbiomech.2025.112491. Epub 2025 Jan 2.
Understanding intrinsic muscular adaptations more deeply can help clarify their relationships with sports performance. Therefore, the aim of this study was to determine if vastus lateralis muscle architecture, quality and stiffness can explain knee extensor maximal torque and countermovement and squat jump performance of athletes. One hundred and two athletes were evaluated based on the architecture, quality and stiffness of the vastus lateralis at rest. Furthermore, the knee extensor maximal voluntary isometric contraction and maximal concentric contraction at 60°/s and vertical jumps countermovement and squat jump performance were measured. Stepwise linear regression showed vastus lateralis echo intensity and muscle thickness determine knee extensor maximal voluntary isometric contraction (r = 0.435) and knee extensor maximal concentric contraction at 60°/s (r = 0.400) in athletes. Moreover, vastus lateralis echo intensity, muscle thickness and pennation angle can determine athletes' performance during countermovement (r = 0.439-0.578) and squat-jump (r = 0.459-0.570). The findings emphasize that vastus lateralis muscle architecture and quality is an important determinant of maximal knee extensor torque (40-44 %) and countermovement (44-58 %) and squat-jump (46-57 %) performance. Our results demonstrate that the muscle architecture and quality of the vastus lateralis are important determinants of torque and power output performance across various sports disciplines.
更深入地了解内在肌肉适应性有助于阐明它们与运动表现的关系。因此，本研究的目的是确定股外侧肌的结构、质量和僵硬度是否能够解释运动员的膝关节伸肌最大扭矩以及反向运动和深蹲跳的表现。基于股外侧肌在静息状态下的结构、质量和僵硬度对102名运动员进行了评估。此外，还测量了膝关节伸肌最大自主等长收缩、60°/秒时的最大向心收缩以及垂直跳反向运动和深蹲跳的表现。逐步线性回归显示，股外侧肌的回声强度和肌肉厚度决定了运动员膝关节伸肌最大自主等长收缩（r = 0.435）和60°/秒时膝关节伸肌最大向心收缩（r = 0.400）。此外，股外侧肌的回声强度、肌肉厚度和羽状角可以决定运动员在反向运动（r = 0.439 - 0.578）和深蹲跳（r = 0.459 - 0.570）过程中的表现。研究结果强调，股外侧肌的结构和质量是膝关节伸肌最大扭矩（40 - 44%）、反向运动（44 - 58%）和深蹲跳（46 - 57%）表现的重要决定因素。我们的结果表明，股外侧肌的肌肉结构和质量是各运动项目中扭矩和功率输出表现的重要决定因素。
