【摘要】 目的:以寸拳为例,从动力学和运动学的角度剖析武术"击打"动作中"二次发力"现象,为研究击打提供理论支撑。方法:20名自愿者分成对照组(普通大学生)和实验组(咏春拳练习者),用高速成像捕捉仪及搏击项群测试仪测试关节角度、速度、加速度、时间及力量等指标。结果:踝、膝、髋、肩、肘关节角度迅速变化时间点,对照组左侧0.25、0.20、0.30、0.35、0.40s;右侧0.20、0.20、0.20、0.30、0.30s,右侧踝、膝、髋与肩、肘出现0.10s的间隔,出现"相互抵消"作用。实验组左侧0.35、0.25、0.35、0.30、0.35s;右侧0.25、0.30、0.30、0.30、0.30,出现高度一致性,产生"累计效应"。实验组五项指标显著高于对照组,P<0.01、P<0.001。对照组最大速度和最大加速度出现时间分别为0.421±0.176s、0.424±0.124s,时差0.003s,P>0.05;实验组分别为0.376±0.105s、0.333±0.103s,时差0.043s,P<0.001,最大加速度先于最大速度出现。结论:协调性(神经支配肌肉)和打击时机(动量和冲量关系)是武术"击打"动作中的"二次发力"现象的根源。更多还原

【Abstract】 Objective: In order to provide theoretical support for boxing by analyzing from the viewpoint of dynamics and kinematics and the analysis of martial arts and secondary action power phenomenon. Methods: 20 volunteers were divided into control group( normal college students) and experimental group( wing chun practitioners),using high- speed image capturing apparatus and fight Xiang Qun tester test joint Angle,speed,acceleration,time and strength index. Results: the ankle,knee,hip,shoulder,elbow Angle rapidly changing point in time,the control group on the left side of the 0. 25,0. 20,0. 30,0. 20,0.30s; On the right side of 0. 20,0. 20,0. 20,0. 20,0. 20 s,the right side of the ankle,knee,hip and shoulder,elbow,the interval of 0. 10 s,appear "offset". The experimental group on the left side of the 0. 35,0. 25,0. 35,0. 25,0. 35s; On the right side of 0. 25,0. 30,0. 30,0. 30,0. 30,high consistency,produce the"cumulative effect". Experimental group five index is significantly higher than the control group,P < 0. 01,P < 0. 001. Control group maximum velocity and maximum acceleration time were 0. 421 ± 0. 176 s,0. 424 ± 0. 124 s,time of 0. 003 s,P > 0. 05; The experimental group were 0. 376 ± 0. 105 s,0. 333 ± 0.103 s,time of 0. 043 s,P < 0. 001,the maximum acceleration prior to maximum speed. Conclusion: coordination( innervation muscles) and the fight against the timing( momentum and impulse) is a martial arts and action of the source of power is secondary phenomenon.更多还原