Zhu Ruizhe, Yang Xiaoyi, Chong Luis C, Shao Shirui, István Bíró, Gu Yaodong
Faculty of Sports Science, Ningbo University, Ningbo 315211, China.
Faculty of Engineering, University of Szeged, 6720 Szeged, Hungary.
Healthcare (Basel). 2023 Apr 25;11(9):1216. doi: 10.3390/healthcare11091216.
Topspin is one of the most attacking strokes in table tennis, and topspin forehand loop is an effective way to score. The aim of this study was to investigate the kinematics of the lower extremities in topspin forehand loop between different levels via OpenSim Musculoskeletal Modelling. Ten elite athletes (NL1) and ten medium athletes (NL2) performed the topspin forehand loop without muscle and joint injuries. An eight-camera Vicon motion capture system was used to measure the kinematics data. During the topspin forehand loop, the forward phase (FP) and the entire phase (EP) of the NL1 were significantly shorter than that of the NL2. In the sagittal plane, NL1 significantly had greater hip and ankle flexion and extension at range of motion (ROM) but less hip flexion and knee flexion at FP and less ankle flexion at BP than NL2. In the frontal plane, NL1 displayed less ROM in the hip joint and significantly less hip abduction ROM at the backward phase (BP). In the transverse plane, NL1 had a significantly greater ROM in the hip joint and displayed significantly less hip ROM at the BP. The level differences presented in this study could help table tennis athletes to improve performance and coaches to develop technical training.
上旋球是乒乓球运动中最具攻击性的击球方式之一，而正手弧圈上旋球是一种有效的得分手段。本研究旨在通过OpenSim肌肉骨骼建模，探究不同水平运动员在正手弧圈上旋球时下肢的运动学特征。十名精英运动员（NL1组）和十名中等水平运动员（NL2组）进行了正手弧圈上旋球动作，且均无肌肉和关节损伤。使用八台摄像机的Vicon动作捕捉系统测量运动学数据。在正手弧圈上旋球过程中，NL1组的前向阶段（FP）和整个阶段（EP）明显短于NL2组。在矢状面，NL1组在运动范围（ROM）上髋关节和踝关节的屈伸幅度明显更大，但在FP阶段髋关节屈曲和膝关节屈曲幅度小于NL2组，在向后阶段（BP）踝关节屈曲幅度也小于NL2组。在额状面，NL1组髋关节的ROM较小，在BP阶段髋关节外展ROM明显更小。在横断面，NL1组髋关节的ROM明显更大，在BP阶段髋关节的ROM明显更小。本研究呈现的水平差异有助于乒乓球运动员提高成绩，也有助于教练制定技术训练方案。
