He Zhanyang, Fang Zeqi, Ye Haoxiang, Su Sujing
College of Physical Education and Health Sciences, Zhejiang Normal University, Jinhua, China.
Front Bioeng Biotechnol. 2025 May 30;13:1609911. doi: 10.3389/fbioe.2025.1609911. eCollection 2025.
In badminton, lower limb injuries frequently occur during unanticipated smash landing movements. Additionally, the risk of lower limb injuries may vary depending on different landing strategies. This study aims to investigate the impact of unanticipated factors and two types of smash actions in the backhand area on lower limb biomechanics.
A motion capture system and force plates were used to collect biomechanic data of 13 female athletes (age: 21.2 ± 1.9 years; height: 167.1 ± 4.1 cm; weight: 57.3 ± 5.1 kg) during backhand rear-court jump smash (BRJS) and backhand lateral jump smash (BLJS) in both anticipated and unanticipated conditions. Unanticipated tasks were conducted by having the athletes perform a random number of specific badminton corner drills, followed by a random movement command given by a signboard and a shuttlecock being launched towards the left half-court by a machine. Waveform analysis was performed using Statistical Parametric Mapping, and discrete parameters were analyzed using a 2 × 2 repeated measures ANOVA.
The results indicated that under unanticipated conditions, both BRJS and BLJS led to higher vertical instantaneous load rates ( = 0.003, = 0.314) and knee extension moments ( = 0.013, = 0.231) at initial contact (IC). The main effect results indicated that BRJS caused greater knee abduction angles ( = 0.03, = 0.182) and knee adduction moments ( = 0.010, = 0.248) at IC than BLJS, while the interaction effects showed that BRJS had a greater frontal plane center of pressure displacement under unanticipated conditions ( = 0.041, = 0.186). BLJS showed greater knee extension moments ( = 0.013, = 0.231) and smaller knee ( = 0.002, = 0.347) and hip ( < 0.001, = 0.491) flexion angles at IC compared to BRJS. Additionally, BLJS demonstrated higher peak ankle internal rotation moments ( = 0.018, = 0.212) than BRJS, with a greater peak ankle inversion moment under unanticipated conditions.
Unanticipated factors significantly impacted the biomechanics of both smash landing actions, potentially increasing the risk of ACL injuries. Moreover, unanticipated factors may increase the risk of ankle sprains during the BLJS movement.
在羽毛球运动中，下肢损伤经常发生在意外的扣杀落地动作过程中。此外，下肢损伤的风险可能因不同的落地策略而有所不同。本研究旨在探讨意外因素以及反手区域两种扣杀动作对下肢生物力学的影响。
使用运动捕捉系统和测力板收集13名女性运动员（年龄：21.2±1.9岁；身高：167.1±4.1厘米；体重：57.3±5.1千克）在预期和意外条件下进行反手后场跳杀（BRJS）和反手侧跳杀（BLJS）时的生物力学数据。意外任务通过让运动员进行随机数量的特定羽毛球角球练习，然后由一个指示牌给出随机运动指令，并由一台机器向左半场发射一个羽毛球来进行。使用统计参数映射进行波形分析，并使用2×2重复测量方差分析对离散参数进行分析。
结果表明，在意外条件下，BRJS和BLJS在初始接触（IC）时均导致更高的垂直瞬时负荷率（P = 0.003，η² = 0.314）和膝关节伸展力矩（P = 0.013，η² = 0.231）。主效应结果表明，BRJS在IC时比BLJS导致更大的膝关节外展角度（P = 0.03，η² = 0.182）和膝关节内收力矩（P = 0.010，η² = 0.248），而交互效应表明，BRJS在意外条件下在额状面压力中心位移更大（P = 0.041，η² = 0.186）。与BRJS相比，BLJS在IC时显示出更大的膝关节伸展力矩（P = 0.013，η² = 0.231）以及更小的膝关节（P = 0.002，η² = 0.347）和髋关节（P < 0.001，η² = 0.491）屈曲角度。此外，BLJS显示出比BRJS更高的踝关节内旋峰值力矩（P = 0.018，η² = 0.212），在意外条件下踝关节内翻峰值力矩更大。
意外因素显著影响了两种扣杀落地动作的生物力学，可能增加前交叉韧带损伤的风险。此外，意外因素可能增加BLJS动作过程中踝关节扭伤的风险。
