（二）跨步垂直跳：短距離移位攔網時的跨步起跳動作形式。跳躍前雙足併立，

（二）跨步垂直跳：短距离移位拦网时的跨步起跳动作形式。跳跃前双足并立，距起跳点一步之距离外，动作起始时快速的向左(右跨越一步起跳，手臂直接随跳起往上伸展并主动侵略对方领空的拦网动作。此动作分析与原地垂直跳相同，加了一个往左右侧跨步的动作，此时髋关节外展配合膝关节的屈曲作侧移，以右脚为例，髋关节向右侧移外展，此时左脚随后做内收，半蹲起跳之动作。<br><br>（三）助跑跳：预备时膝关节微弯使动作处于产生移动速度最快的狀态下，，往左（右）呈两步或三步的助跑，加上摆臂及引臂的动作，双手往上伸展并侵略对方领空的动作。预备姿势，向左右两侧助跑，右侧为例，踝关节外旋及髋关节外展向右跨步，左脚随即跟上做内收并超越右脚，左脚踝关节外旋与右脚成交叉步，右脚伸直，此时手部由肘关节带动手臂向后外展后，右脚回原预备姿势位置，肘关节带动肩关节往上伸展，膝关节屈曲起跳的动作。

（二）跨步垂直跳：短距离移位拦网时的跨步起跳动作形式。 跳跃前双足并立，距起跳 点一步之距离外，动作起始时快速的向左（右跨 越一步起跳，手臂直接随跳起往上伸展 并主动侵略对方领空的拦网动作。 此动作分析与原地垂直跳相同，加了一个往左右侧跨 步的动作，此时髋关节外展配合膝关节的屈曲作侧移，以右脚为例，髋关节向右侧移外 展，此时左脚随后做内收，半蹲起跳之动作。<br><br>（三）助跑跳：预备时膝关节微弯使动作处于产生移动速度最快的状态下，，往左（右） 呈两步或三步的助跑，加上摆臂及引臂的动作，双手往上伸展并侵略对方领空的动作。 预备姿势，向左右两侧助跑，右侧为例，踝关节外旋及髋关节外展向右跨步，左脚随即 跟上做内收并超越右脚，左脚踝关节外旋与右脚成交叉步，右脚伸直，此时手部由肘关 节带动手臂向后外展后，右脚回原预备姿势位置，肘关节带动肩关节往上伸展，膝关节 屈曲起跳的动作。

（2） Step vertical jump: the form of step-by-step take-off when the block is shifted in short distance. Before jumping, stand side by side with both feet, one step away from the take-off point, and start the action by rapidly moving to the left (take off with one step on the right side, with the arms directly extending upward with the jump and actively invading the opponent's airspace). This movement analysis is the same as the original vertical jump, adding a step to the left and right sides. At this time, hip joint abduction is combined with knee joint flexion for lateral movement. Take the right foot as an example, the hip joint moves to the right side and abducts. At this time, the left foot then does the action of adduction, half squat and take-off.<br>（3） Run up jump: when preparing, the knee joint slightly bends to make the movement in the state of producing the fastest moving speed, and the run-up of two or three steps to the left (right), plus the action of swinging arm and leading arm, the action of extending hands upward and invading the opponent's airspace. In the preparation position, run up to the left and right sides. For example, on the right side, the ankle joint rotates outward and the hip joint abducts to the right step. The left foot immediately catches up to do adduction and surpasses the right foot. The ankle joint of the left foot rotates outward with the right foot, and the right foot stretches straight. At this time, the hand is driven by the elbow joint. After the arm is abducted backward, the right foot returns to the original prepared position, and the elbow joint drives the shoulder joint to extend upward and the knee joint The act of taking off with flexion.<br>