本研究的主要目的在探討身體活動量與上呼吸道感染的關係。本研究以修訂之土呼吸道感染問卷，郵寄調查國內年齡在25至50歲之健康男性，色括馬拉松與十公里的長跑族及一般上班族，共得有效問卷470份。將所得資料登錄並進行統計分析處理後，發現:不同運動背景受試者，無論在感染次數及罹病天數上，均有顯著差異水準(P < 0.05) 0 flp一般上班族在感染次數與罹病天數均顯著大於馬拉松組及十公里缸。不同身體活動量組(METs)上呼吸道感染次數及罹病天數有顯著差異。且有低活動量組土呼吸道感染次數及罹病天數最多，高活動量組次之，中活動量組最低的趨勢。但以每日身體活動的總消耗能量(KCAL)大小比較時，則上呼吸道感染的次數及罹病天數，並無顯著差異。適度的身體活動量可以減少上呼吸道感染的機率與嚴重性，因此一般上班族應安排規律的運動時間或增加動態休閒活動的機會，以減低罹患上呼吸道感染的困擾。

Thepurpose of this study was to investigate the relation between upper respirato可tractinfections (URTI) and physical energy expenditure (METs). By the method of epidemiology main questionnaire the revised URTI surveys were used for data∞1- lection in the study. 470 validate questionnaires were obtained including three groups of Marathon， 10K runners & sendentary workers， form 25 to 50 years of age male subjects. AfterANDV A statistical analyses， the results were concluded as the following: The triers with different athelete background have significant evidence (p < 0.5)， no matter in the infections' volume of disease days. The sympotoms and severity of sendentary workers are more significant than Marathon and 10K runners. There is significant difference in symptoms and severity of URTI for the different groups has the highest inclination in symptoms and severity of URTI， the moderate METs groups has the lowest inclination. And， the high METs group possesses in the middle of circumstance. Moderate physical activities can reduce the rate and degree of upper respiratory tract infection， therefore， sendentary workers should arrange regular time for activities or inαease the opportunity of dynamic activities in order to reduce the anxiety in infection of upper respiratory tract.