为了探究球员膝关节运动学参数与冲刺用时之间的相关关系，通过招募26名国家一级足球运动员参与30 m冲刺测试，并基于惯性传感器与OpenSim分析研究球员冲刺过程中的膝关节运动学特征。结果表明：摆动屈膝的活动范围（range of motion, ROM, r=-0.148, P＝0.005）与冲刺用时呈负相关；摆动伸膝的平均角速度（r＝-0.251，P<0.001）与冲刺用时呈负相关；支撑屈膝的平均角速度（r=-0.107，P＝0.045）与冲刺用时呈负相关；支撑伸膝的角度极值（r=0.118，P=0.029）与冲刺用时呈正相关，ROM（r＝-0.145，P＝0.004）、平均角速度（r＝-0.306，P<0.001）与冲刺用时呈负相关。可见在冲刺过程中，以较快的角速度完成摆动阶段伸膝和支撑阶段的屈伸膝运动，并且注重充分蹬伸的动作特点，有助于球员展现出更出色的冲刺表现。

In order to explore the correlation between knee joint kinematic parameters and sprint time, a study was conducted by recruiting 26 national first-level football players to participate in a 30-meter sprint test. Inertial sensors and OpenSim analysis were used to investigate the knee joint kinematic characteristics during the sprint. The results show that the range of motion(ROM) of swing phase knee flexion(r = -0.148, P = 0.005) is negatively correlated with sprint time. The average angular velocity of swing phase knee extension(r = -0.251, P < 0.001) is negatively correlated with sprint time. The average angular velocity of stance phase knee flexion(r = -0.107, P = 0.045) is negatively correlated with sprint time. The peak angle of stance phase knee extension(r = 0.118, P=0.029) is positively correlated with sprint time, while the ROM(r = -0.145, P = 0.004) and average angular velocity(r = -0.306, P < 0.001) of stance phase knee extension are negatively correlated with sprint time. It is concluded that during the sprint, completing the swing phase knee extension and stance phase knee flexion and extension with a faster angular velocity, and emphasizing the action characteristics of full extension, contribute to players exhibiting superior sprint performance.