優秀撐竿跳選視覺訊息對於擺上時機之影響

Influence of Visual Information on Timing of Swing to Inversion for Elite Pole Vaulter

10.6194/SCS.2008.10.03

吳金黛(C. D. Wu)；邱宏達(H. T. Chiu)

撐竿跳 ； 擺上時機 ； 視覺訊息 ； pole vault ； swing to inverse ； visual information

運動教練科學

10期（2008 / 07 / 01）

47 - 56

繁體中文

本研究目的爲瞭解優秀撐竿跳選手是否藉視覺訊息決定擺上時機。以參加2006年全國田徑錦標賽撐竿跳男子金牌選手最佳三次成功試跳（高度爲4.8、4.9和5公尺），由起跳、懸垂到準備擺上之動作進行分析。使用一台高速攝影機，以動作分析軟體分析前腳髖關節角度（前髖角）、後腳髖關節角度（後髖角）、前腳膝關節角度（前膝角）與後腳膝關節角度（後膝角）。不同試跳高度的分析結果發現，前髖角的變化型式大致相似，不會因高度不同而改變，但起跳瞬間時其角度差異較大，到擺上時機角度差異縮小；後髖角的分析也得到相同的結果。由髖角相對於眼睛水平位置變化曲線，發現當眼睛到達某一固定位置時，不同試跳高度呈現曲線重疊現象，與前擺腳往上開始動作時間相同。本研究推測此選手應是利用視覺訊息來決定懸垂後開始擺上的時機。

The Purpose of this study was to clarify the timing of swing to inverse for pole vaulter. The data were collected from the three successful trials (the heights of the crossbar are 4.80 m, 4.90 m and 5.00 m) of the champion vaulter at the 2006 National Track and Field Tournament in Taiwan. The trials were recorded by one high speed camera. The hip and knee angle of both leg in this study were analyzed by motion analysis software. The results indicated that the three curves of hip angles are not consistent under representing by time and the high of eye level was translated. However, the curves presented by the high of eye level are almost overlapped on the last four frames. The vaulter seemed to start to swing to inversion as he swung approaching a constant visual distance to one stationary point in the space. The elite pole vaulter perhaps relies on the visual information to catch the timing of swing to inversion.

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