Dami Ahmed, Payen Eléna, Isabelle Pier-Luc, Farahpour Nader, Moisan Gabriel
Groupe de Recherche sur les Affections Neuromusculosquelettiques (GRAN), Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada.
Department of Anatomy, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, Canada.
PLoS One. 2025 May 2;20(5):e0322562. doi: 10.1371/journal.pone.0322562. eCollection 2025.
BACKGROUND/PURPOSE: Lower limbs biomechanics during unilateral jump landing, a common sports maneuver, is widely studied in research. Most studies used an even surface which may not be ecologically valid in sports contexts. There is a need to explore the lower limbs biomechanics during landing on other, more challenging, surfaces. The purpose of this study was to investigate the lower limb kinematic and kinetic differences during unilateral drop jump landing from a 30 cm platform on even (DROP) and medially inclined (WEDGE) surfaces.
Fifteen healthy participants were recruited to take part in this laboratory-based cross-sectional study. The experimental protocol involved comparing hip, knee, ankle and midfoot angles, moments, and power between DROP and WEDGE.
Main kinematic findings were that during WEDGE, midfoot inversion angles were smaller, and ankle eversion and plantarflexion, knee abduction and internal rotation and hip abduction angles were greater compared to DROP. Main kinetic results were that during WEDGE, midfoot inversion and adduction moments, ankle inversion moments, knee adduction moments, hip adduction and internal rotation moments, midfoot and ankle power were greater and ankle plantarflexion and adduction moments and knee internal rotation moments were smaller compared to DROP.
These adaptations highlight the intricate interaction between surface inclination and joint movements. This study's results not only contribute valuable insights into the biomechanics of landing on inclined surfaces but also lays the foundation for future research that can refine injury prevention strategies, optimize training protocols, and enhance the overall performance and safety of athletes across various sports.
背景/目的：单侧跳跃落地是一种常见的运动动作，其下肢生物力学在研究中得到了广泛的探讨。大多数研究使用的是平坦表面，这在运动环境中可能不具有生态学效度。因此，有必要探究在其他更具挑战性的表面上落地时的下肢生物力学。本研究的目的是调查在30厘米高的平台上，从平坦（DROP）和内侧倾斜（WEDGE）表面进行单侧下落跳跃落地时下肢的运动学和动力学差异。
招募了15名健康参与者参与这项基于实验室的横断面研究。实验方案包括比较DROP和WEDGE之间的髋、膝、踝和中足角度、力矩和功率。
主要运动学发现是，与DROP相比，在WEDGE过程中，中足内翻角度更小，而踝外翻和跖屈、膝外展和内旋以及髋外展角度更大。主要动力学结果是，与DROP相比，在WEDGE过程中，中足内翻和内收力矩、踝内翻力矩、膝内收力矩、髋内收和内旋力矩、中足和踝功率更大，而踝跖屈和内收力矩以及膝内旋力矩更小。
这些适应性变化突出了表面倾斜度与关节运动之间复杂的相互作用。本研究结果不仅为倾斜表面上落地的生物力学提供了有价值的见解，也为未来的研究奠定了基础，这些研究可以完善损伤预防策略、优化训练方案，并提高各类运动中运动员的整体表现和安全性。
