Whiting W C, Gregor R J, Finerman G A
Department of Kinesiology, School of Medicine, University of California, Los Angeles 90024.
Am J Sports Med. 1988 Mar-Apr;16(2):130-6. doi: 10.1177/036354658801600207.
Using two synchronized cameras, four experienced boxers were filmed while they threw a series of punches at a practice bag. Three-dimensional (3D) coordinates of each boxer's shoulder, elbow, wrist, and glove were used to estimate linear and angular kinematics of the upper extremity. Average velocities at contact ranged from 5.9 to 8.2 m/s with peak velocities of 6.6 to 12.5 m/s reached 8 to 21 ms prior to hand/grove contact with the bag. Significant differences in shoulder and wrist velocitie, elbow angle excursions, and elbow angular velocities were seen when comparing hooks and jabs. Few differences were evident when comparing the kinematics of gloved versus bare-handed punches. Results are significant in providing kinematic data characteristic of experienced performers, which may be used in a kinetic model of punch impact and its relationship to potential injury mechanisms.
使用两台同步摄像机，对四名经验丰富的拳击手向一个沙袋打出一系列拳法的过程进行了拍摄。利用每位拳击手肩部、肘部、腕部和手套的三维（3D）坐标来估计上肢的线性和角运动学。接触时的平均速度在5.9至8.2米/秒之间，在手部/手套与沙袋接触前8至21毫秒达到的峰值速度为6.6至12.5米/秒。比较勾拳和平直拳时，肩部和腕部速度、肘部角度偏移以及肘部角速度存在显著差异。比较戴手套拳击和裸拳拳击的运动学时，几乎没有明显差异。这些结果对于提供有经验的表演者的运动学数据具有重要意义，这些数据可用于拳击冲击力的动力学模型及其与潜在损伤机制的关系研究。
