不同速率條件下跑步機與地面步態運動學分析

The Kinematic Analysis of Treadmill and Overground Gait under Different Speed Conditions

柯柏任 ； 黃長福 ； 許太彥

《臺中教育大學體育學系系刊》 11期 (2016/11) Pp. 1-13

摘要

目的：在測定跑步機與實際地面跑步的耗氧量測驗中，發現在相同速率與距離下使用跑步機的選手所需耗氧量會比在實際地面上跑步的選手減少10%左右，因此在跑步機上跑步時所動用的腿部肌群可能與實際在地面跑步時的動作有所不同，且不同的步態速率也常被作為測驗步態的方法之一，故本研究目的為探討健康男性在跑步機與地面上不同速率條件下運動學的差異。方法：本研究以健康男性8名作為實驗參與者，平均身高為173.38±6.39公分，平均體重為72.14±7.48公斤，平均年齡為23.16±3.21歲。實驗時使用VFC-1000高速攝影機(250Hz)來收集運動學參數，不同速率為自身喜好跑速的40％、60％、80％、100％、120％、140％與160％，之後並利用Kwon3D動作分析軟體分析運動學參數，統計使用二因子變異數分析來檢驗在不同速率條件下地面與跑步機上支撐期、擺動期、步頻與步幅的差異顯著性(α=.05)。結果：在支撐期、擺動期、步頻與步幅方面，不同速率條件下跑步機與地面之間的交互作用皆達到顯著差異，經單純主要效果分析發現，在速率因子間皆達顯著差異，但在地面與跑步機之間的組間比較皆未達顯著差異。結論：初步發現為地面上的步態模式與跑步機上的步態模式在不同速率條件下可能是相似的。

關鍵字

支撐期 ； 擺動期 ； 步頻 ； 步幅

並列摘要

Purpose: According to previous literature, athletes who run on the ground consume ten percent Oxygen more than those who run on treadmills at the identical speed and distance. There are difference in kinematics patterns between running on the ground and treadmills. The purpose of this study is compare kinematics parameter of the right feet on the ground and on the treadmills. Methods: Eight male college students were served as the subjects for this study. The mean height, weight and age were 173.38 ± 6.39cm, 72.14 ± 7.48 kg and 23.16 ± 3.21 years. Kinematics data were captured by using a VFC-1000 high speed camera (250Hz). The data was analyzed by using Kwon3D. The selected variables were tested by two-way ANOVA (α=.05). Results: There is a mutual reaction between ground factor and speed factor in swing phase, stand phase, frequency of stride and stride length. But it was showed that there were no significant different in ground factor in swing phase, stand phase, frequency of stride and stride length. Conclusion: The main results of this study were that the gait on the ground and that on the treadmill was very similar in kinematics.

並列關鍵字

Swing phase ； Stand phase ； Frequency of stride ； Stride length