本研究主要目的是在探討體脂肪與走路效率之相關情形，以22名男性志願者為研究對象(平均年齡為24.86 ±5.63歲、身高為169.73 ±5.67公分、體重為76.06 ±20.14公斤)，首先以InBody身體組成分析儀測量其身體脂肪百分率及身體質量指數，再以原地跑步機及V2900氣體分析器為測驗分析之工具，依平衡次序的方式，進行六種走路速度( 2、3、4、5、6、7公里/小時)的攝氧量測驗，藉此求得不同速度走路的攝氧量與身體脂肪百分率及身體質量指數之相關情形。
研究結果顯示：身體脂肪百分率與六種速度走路攝氧量之相關係數分別是：二公里時 r=.586（p＜.05）、三公里時 r=.595（p＜.05）、四公里時 r=.599（p＜. 05）、五公里時 r=.599（p＜. 05）、六公里時 r=.664（p＜. 05）、七公里時 r=.692（p＜. 05）；身體質量指數與六種速度走路攝氧量之相關係數分別是：二公里時 r=.449、三公里時 r=.513（p＜.05）、四公里時 r=.525（p＜.05）、五公里時 r=.514（p＜.05）、六公里時 r=.593（p＜.05）、七公里時 r=.693（p＜. 05）
結論：身體脂肪與走路效率呈顯著性的負相關，且隨著走路速度的增加其相關程度也隨之增高，過多的身體脂肪確實會造成走路運動時身體的負擔，使走路效率變差。

The purpose of this study was to investigate the relationship between human body fat and walking efficiency. Twenty-two healthy male subjests were recruited in this study. The average age, height and weight of subjects were 24.86 ±5.63yrs, 169.73 ±5.67cm and 76.06 ±20.14kg respectively.Each subjest performed three tests including BIA(bioelectrical impedance assessment),BMI(body mass index)and walking oxygen uptake test at six different speeds (2,3,4,5,6 and 7 km/h).
The correlation coefficients of oxygen and BIA at six different speeds were 0.586(2km/h),0.595(3km/h),0.599 (4km/h),0.599 (5km/h) ,0.664(6km/h),0.692(7km/h)（p＜.05）. The correlation coefficients of oxygen uptake and BMI at six different speeds were 0.449(2km/h),0.513(3km/h), 0.525(4km/h),0.514(5km/h),0.593(6km/h),0.693(7km/h)(p＜.05).
The results of this study indicated that increased fat levels were associated with increased oxygen uptake in six different walking speeds.In conclusion,the human body fat was significantly correlated with walking oxygen uptake.The walking efficiency was declining by excess body fat. This could be useful to treat obese adults in developing physical activity program.

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