Bradshaw Elizabeth
New Zealand Academy of Sport, Auckland.
Sports Biomech. 2004 Jan;3(1):125-44. doi: 10.1080/14763140408522834.
Research to date has demonstrated the importance of running speed and an accurate take-off on gymnastics vaulting performance (Krug et al., 1998; Bohne et al., 2000). Current training practice for gymnastics vaulting is to stereotype the 15-25 m run-ups to the board, which assumes that a fast and reliable approach is best controlled predominantly without visual feedback. Incidences where gymnasts make errors during their run-ups, often landing onto the back of the board, occur frequently, even at the international level. The standard deviation method (e.g. Lee et al., 1982) for identifying visual regulation in long jump run-ups was employed in this first exploration of gymnastics vaulting to examine whether visual regulation processes are utilised. Secondly, the question of how a small number of gymnasts can run fast during the approach and perform more difficult vaults was addressed. Five elite female gymnasts aged 13-15 years performed five round-off entry vaults. One panning 50 Hz video camera recorded each trial from an elevated platform to evaluate the approach step, hurdle, and round-off characteristics, whilst two 250 Hz cameras recorded vaulting performance. Two qualified judges viewed each vaulting trial and provided a performance score. A precursor for a fast take-off from the board when vaulting is to utilise vision early to control the approach kinematics (p = 0.02). High take-off velocity was directly related to judge's score (p = 0.03). Coaches need to supplement gymnasts' vault training to include exercises that improve the gymnasts' ability to visually regulate their gait pattern whilst running.
迄今为止的研究已经证明了跑步速度和准确起跳对体操跳马成绩的重要性(克鲁格等人,1998年;博内等人,2000年)。目前体操跳马的训练方法是将助跑距离固定为15 - 25米,这种方法假定快速且可靠的助跑主要在无需视觉反馈的情况下就能得到最佳控制。即使在国际水平上,体操运动员在助跑过程中犯错,比如经常踩到跳马板后端的情况也屡见不鲜。在对体操跳马的首次探索中,采用了跳远助跑中识别视觉调节的标准差方法(例如李等人,1982年)来研究是否利用了视觉调节过程。其次,探讨了少数体操运动员如何在助跑时快速奔跑并完成更难跳马动作的问题。五名年龄在13 - 15岁的优秀女子体操运动员进行了五次团身跳起跳的跳马动作。一台50赫兹的平移摄像机从高架平台记录每次试跳,以评估助跑步、跨栏步和团身跳的特点,同时两台250赫兹的摄像机记录跳马动作表现。两名合格的裁判观看了每次跳马试跳并给出成绩评分。跳马时从跳马板快速起跳的一个先决条件是尽早利用视觉来控制助跑运动学(p = 0.02)。高起跳速度与裁判评分直接相关(p = 0.03)。教练需要增加体操运动员的跳马训练内容,包括一些能提高运动员在跑步时视觉调节步态模式能力的练习。