Liang Zhiqiang, Wu Jinan, Yu Jiabin, Ying Shanshan, Liu Zhiyong, Zhang Yu, Gu Yaodong, Li Jianshe
Faculty of Sports Science, Ningbo University, Ningbo, China.
Research Academy of Grand Health, Ningbo University, Ningbo, China.
Front Physiol. 2023 Feb 24;14:1125240. doi: 10.3389/fphys.2023.1125240. eCollection 2023.
The purpose of this study was to examine biomechanical performance of the foot-up serve (FUS) in female tennis players at different skill levels. FUS analysis was completed in the biomechanical laboratory by 32 female college tennis players at three different levels. During FUS, 3D-biomechanical data from tennis players' lower limbs were collected. One-way ANOVA was used to examine differences in kinematic and kinetic data between groups Range of motion (ROM) of bilateral lower-limb joints revealed significant differences in kinematics performance during both the preparation and landing cushion phases ( < 0.05). During preparation, Level 3 was significantly longer than Level 2 (P-a = 0.042, P-b = 0.001, and P-c = 0.006). During the flight phase, significant differences between levels 1 and 3 (P-a:0.002) and levels 1 and 2 (P-c:0.000) were discovered (P-a:0.002 and P-c:0.000). There were significant height differences between levels 1 and 2 as well as between levels 1 and 3. (P-a = 0.001, P-c = 0.000). During serve preparation (P-c = 0.001) and landing, GRF's peak was significantly higher than level 3. (P-c:0.007). Significant differences were found between groups in the LLS preparation stage, with level 3 significantly higher than levels 1 and 2. (P-a = 0.000, P-b = 0.001, and P-c = 0.000); during landing, level 2 LLS was significantly higher than levels 1 and 3. (P-a = 0.000, P-b = 0.000, and P-c = 0.035). The range of motion of joints and the stiffness of the lower limbs have a significant impact on a tennis player's FUS performance. A larger of joint mobility and lower-limb stiffness promote better performance during the FUS preparation stage.
本研究的目的是考察不同技术水平的女性网球运动员蹬地发球（FUS）的生物力学表现。32名不同水平的大学女子网球运动员在生物力学实验室完成了蹬地发球分析。在蹬地发球过程中，收集了网球运动员下肢的三维生物力学数据。采用单因素方差分析来检验组间运动学和动力学数据的差异。双侧下肢关节的活动范围（ROM）显示，在准备阶段和落地缓冲阶段的运动学表现存在显著差异（P<0.05）。在准备阶段，3级的时间显著长于2级（P-a = 0.042，P-b = 0.001，P-c = 0.006）。在飞行阶段，发现1级和3级之间（P-a:0.002）以及1级和2级之间（P-c:0.000）存在显著差异（P-a:0.002和P-c:0.000）。1级和2级之间以及1级和3级之间存在显著的高度差异（P-a = 0.001，P-c = 0.000）。在发球准备阶段（P-c = 0.001）和落地时，地面反作用力（GRF）的峰值显著高于3级（P-c:0.007）。在下肢支撑准备阶段，组间存在显著差异，3级显著高于1级和2级（P-a = 0.000，P-b = 0.001，P-c = 0.000）；在落地时，2级的下肢支撑显著高于1级和3级（P-a = 0.000，P-b = 0.000，P-c = 0.035）。关节活动范围和下肢刚度对网球运动员的蹬地发球表现有显著影响。更大的关节活动度和更低的下肢刚度在蹬地发球准备阶段能促进更好的表现。
