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鞭腿动作是散打腿法技术的核心,将散打鞭腿动作简化为一个二环节运动链模型,对散打鞭腿动作的髋、膝关节和大腿、小腿环节在三维平面内进行位置矢量的确定,以此确定在鞭腿动作中,各关节和环节的运动学参数,然后确定目标函数(末端速度V),建立了人体鞭腿动作的三维运动学方程,将鞭腿动作各环节要领数学化描述,结论认为:(1)鞭腿动作中大腿的角速度由腰部角速度和髋关节角速度决定,小腿的角速度由大腿和膝关节的角速度决定,三者密切配合共同决定着鞭腿末端的速度;(2)在T1阶,大小腿下潜完曲度不易超过450,在进攻腿离地瞬间,小腿环节的角速度大于大腿环节的角速度时最有利于膝关节速度的增加,进攻退离地时膝关节的角速度主要由小腿蹬地时的地面反作用力决定;(3)在T2阶段,大小腿充分折叠有利于膝关节角速度的加大;(4)人体的鞭腿环节链模型中,鞭打原理遵从动量由近端环节向远端环节传递的原理,通过髋关节及时有效的制动可使膝关节动量增加,通过膝关节的制动可使动量传递到末端,引起末端加速。(5)在散打鞭腿环节链模型中只有多环节和关节依次协调配合才能使末端发挥最佳击打效果。
Whiplash leg movement is the core of Sanda Leg Technique, which simplifies Sanda whip leg movement into a two-link sport chain model. The position vector of hip, knee and thigh, In order to determine the whip leg movements, the joints and links of the kinematic parameters, and then determine the objective function (terminal velocity V), the establishment of a human whip leg movements kinematics equation, the whip leg movements of the essentials of a mathematical description , The conclusion is that: (1) whip leg motion angular velocity of the thigh by the waist angular velocity and hip joint angular velocity, the calf angular velocity of the thigh and knee by the angular velocity of the three closely together to determine the whip leg speed; (2 ) In the T1 order, the leg is not easy to dive after the completion of the curvature of 450 points in the moment off the ground off the leg, the shank part of the angular velocity greater than the thigh when the angular velocity of the most conducive to the increase in knee speed, offensive knee off The angular velocity is mainly determined by the ground reaction force when the leg is kicked in. (3) In the T2 phase, the leg and leg are fully folded in favor of the increase of the angular velocity of the knee joint. (4) Compliance playing principle principle momentum transfer from the proximal segment to the distal segment through the hip timely and effective braking momentum can increase the knee, can momentum transfer to the knee end of the brake, causing the end of acceleration. (5) In the chain model of Sanda whip leg link only the multi-link and the joint coordination in order to make the end play the best impact.