桑兰跳马前手翻直体前空翻转体180度动作的运动学分析

本文阐述了桑兰跳马前手翻直体前空翻转体180度的技术:上板动作快,重心抛物线低,重心水平速度明显减小,垂直速度明显增大,是踏跳阶段的主要技术特征,快速顶肩同时制动腿,是推手阶段的主要技术特征,推离马后,身体在额状轴上翻转1/4周左右时,立即抱左臂于胸前,加速转体,并对其动作进行运动学分析.

The Athletic Analysis of the Movement of the Forward Turning over Forward Stretched Sal to Half Twist in Sanglan Horse Vault

The Forward Turning Over Forward Stretched Salto Half Twist in Sanglan Horse Vault requires the following skills: quick movement in jumping on the board; low parabola centre of balance; obvious decreasing at horizontal speed; obvious increasing at vertical speed. Quickly raising the shoulders and checking the legs simultaneously is the main skill character at the board beating stage. After pushing off from the horse, athlets should quickly hold their left arms against the chest and twisting at the accelevating speed when the body twisting to around the one-fouths of a cirle at the frontal axis.