Wen Jun, Xu Datao, Zhou Huiyu, Zhang Zanni, Xiang Liangliang, Munivrana Goran, Gu Yaodong
Faculty of Sports Science, Ningbo University, Ningbo 315211, China.
KTH MoveAbility Lab, Department of Engineering Mechanics, KTH Royal Institute of Technology, 114 28 Stockholm, Sweden.
Sensors (Basel). 2025 Apr 17;25(8):2536. doi: 10.3390/s25082536.
The scissor jump (SKJ) is vital in badminton, particularly for backcourt shots, but fatigue increases lower limb load and injury risk. This study investigates how quadriceps fatigue affects biomechanical characteristics and load during SKJ landing, aiming to understand its impact on injury risk. This study involved 27 amateur male badminton players from Ningbo University. Quadriceps fatigue was induced via knee exercises and footwork drills. Biomechanical data before (prior fatigue-PRF) and after fatigue (post fatigue-POF) were recorded using a force platform and motion capture system. Muscle activation was measured with EMG and analyzed through musculoskeletal modeling, with paired t-tests and SPM 1D (Statistical Parametric Mapping 1D) for statistical analysis. Under the POF condition, knee flexion angle increased, and power decreased ( < 0.001, < 0.001, respectively); ankle plantarflexion angle increased, and power decreased ( < 0.001, < 0.001, respectively). As fatigue progressed, joint reaction forces initially decreased but later increased. Joint energy dissipation decreased, with differences more pronounced in the coronal than sagittal plane. Achilles tendon force and anterior-posterior tibial shear force decreased, while coronal plane center-of-mass displacement increased. Findings show quadriceps fatigue harms limb stability, upping knee and ankle loads, disrupting the movement pattern, and risking coronal plane injuries. It is recommended that athletes enhance quadriceps endurance, improve neuromuscular control, and refine landing techniques to maintain stability and prevent injuries when fatigued.
剪刀跳（SKJ）在羽毛球运动中至关重要，尤其是在后场击球时，但疲劳会增加下肢负荷和受伤风险。本研究调查股四头肌疲劳如何影响剪刀跳落地时的生物力学特征和负荷，旨在了解其对受伤风险的影响。本研究涉及来自宁波大学的27名男性业余羽毛球运动员。通过膝关节练习和步法训练诱导股四头肌疲劳。使用力平台和运动捕捉系统记录疲劳前（疲劳前-PRF）和疲劳后（疲劳后-POF）的生物力学数据。用肌电图测量肌肉激活情况，并通过肌肉骨骼建模进行分析，采用配对t检验和SPM 1D（一维统计参数映射）进行统计分析。在POF条件下，膝关节屈曲角度增加，功率降低（分别为<0.001，<0.001）；踝关节跖屈角度增加，功率降低（分别为<0.001，<0.001）。随着疲劳进展，关节反作用力最初降低，但随后增加。关节能量耗散降低，在冠状面的差异比矢状面更明显。跟腱力和胫前-后剪切力降低，而冠状面质心位移增加。研究结果表明，股四头肌疲劳会损害肢体稳定性，增加膝关节和踝关节负荷，扰乱运动模式，并存在冠状面受伤的风险。建议运动员增强股四头肌耐力，改善神经肌肉控制，并完善落地技术，以在疲劳时保持稳定性并预防受伤。
