踢毽動作之視覺訊息

Visual Information for the Shuttle-Cock Kicking

邱文信(Wen-Hsin Chiu)

《大專體育學刊》 11卷4期 (2009/12) Pp. 57-67

https://doi.org/10.5297/ser.200912_11(4).0004

摘要

視覺訊息在踢毽過程中扮演很重要的角色，本文旨在探討受試者內、受試者間、失敗與成功的踢毽正踢τ（Tau）值是否有差異性。本研究利用JVC GR-DVL 9800一台（120Hz）以及Kwon3D軟體（濾波為6Hz）擷取並計算出30名學童踢毽正踢動作的τ值，採用的統計方法有相依樣本t考驗（α=.05）、獨立樣本單因子變異數分析，若達顯著水準以杜凱氏（Tukey）法進行事後比較，統計水準定為α=.05。本研究之結果：一、受試者內τ值的差異情形，除了3位受試者（編號12、24、30）外，大部分均未達到顯著差異（p<.05）；二、受試者間τ值達顯著差異（p<.05）；三、失敗與成功的踢毽正踢τ值未達顯著差異（p<.05）。本研究之結論證明踢毽正踢的τ值存在且各受試者有不同的τ值，符合生態心理學的訊息恆定性的觀念。並由結果可知，在踢毽正踢動作中，τ是判斷踢毽時機的訊息依據，但不是唯一的關鍵。

關鍵字

直接知覺 ； 啟動時機 ； τ值

並列摘要

Visual information played an important role during the process of the shuttle-cock kicking. The purpose of this study was to compare the differences of τ (Tau) value within subjects, between subjects, and the differences between the failure and success for shuttle-cock kicking. In this study, we used a camera (JVC GR-DVL9800, 120 Hz) and Kwon 3D software with 6 Hz cutoff frequency to figure-out the τ of shuttle-cock front kicking from 30 students. This research was based on the statistical methods of repeated measures t-test (α=.05) and one-way ANONA. The result of this study was as follows: 1. Except for three subjects (number 12, 24, 30), almost all subjects' τ didn't achieved significantly (p＜.05) differences within subjects. 2. All subjects' τ achieved significantly differences between subjects (p＜.05). 3. No differences of τ between failure and success (p＜.05) was observed. The study proved that τ existed within subjects and every subject had different τ for shuttle-cock front kicking. The results demonstrated the concept of ecological psychology that the information was consistent. Therefore, τ also one of the main information source for shuttle-cock front kicking.

並列關鍵字

direct perception ； switch timing ； τ value

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