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背越式和俯卧式是目前流行的两种跳高姿势。它们相对于其他姿势的优越性,主要表现在能有效地利用身体重心腾起的高度,在重心腾起高度相同的情况下越过更高的横杆。而做好起跳后在空中的各种旋转动作,则是充分利用腾起高度、顺利越过横杆的关键。透彻地了解背、俯两种跳高姿势空中旋转动作的力学原理,对于顺利地进行跳高的教学和训练,有十分积极的作用。一、背越式,俯卧式空中旋转动作的动力来源各类田径教科书都明确认为,起跳是跳高完整技术的关键环节。它不仅决定腾起角和腾起初速,而且决定空中动作完成
Back to the type and prone is the two popular high jump postures. Their superiority over other postures is mainly manifested in their ability to effectively use the heights of the bodily centers of gravity and to cross the taller bars at the same height of gravity. And take off in the air after a variety of rotating movements, it is to take full advantage of the height, the key to successfully cross the bar. A thorough understanding of the mechanics principle of the air rotation action in the back and pitching high jump positions has a very positive effect on the smooth teaching and training of high jump. First, the back-style, prone to aerial rotation of the power source A variety of track and field textbooks have clearly that the high jump is the key to complete the technical aspects. It not only determines the starting point and the initial speed, but also determines that the aerial maneuver is completed