Montoye H J
J Gerontol. 1982 Jul;37(4):396-402. doi: 10.1093/geronj/37.4.396.
One thousand and fifty-eight men walked on a motor-driven treadmill at 3 miles/hour with the grade increasing 3% at 3-min intervals. (The 30 oldest men walked at 2 miles/hour.) Ventilation, Vo2, and Vco2 were recorded at each treadmill grade. During exercise Vo2 (in ml/min/kg of body wt) is significantly higher in younger compared with older boys. Vo2 increases slightly from age 20 though 59 years at any given work load. The respiratory exchange ratio (Vco2/Vo2) increases throughout the age range, particularly at the higher work loads. Ventilation (in 1/min/kg of body wt) decreases from age 10 to 20 years and increases thereafter, as does the ventilatory equivalent. The increased ventilation in young boys is characterized by an increase in respiration rate, whereas in older men it is accomplished through an increase in tidal volume.
1058名男性以每小时3英里的速度在电动跑步机上行走，坡度每3分钟增加3%。（30名年龄最大的男性以每小时2英里的速度行走。）在每个跑步机坡度下记录通气量、耗氧量（Vo2）和二氧化碳排出量（Vco2）。在运动过程中，与年龄较大的男孩相比，年龄较小的男孩每公斤体重每分钟的耗氧量（Vo2，单位为毫升）显著更高。在任何给定的工作负荷下，从20岁到59岁，耗氧量会略有增加。呼吸交换率（Vco2/Vo2）在整个年龄范围内都会增加，尤其是在较高的工作负荷下。每公斤体重每分钟的通气量（单位为升）从10岁到20岁会下降，此后会增加，通气当量也是如此。年幼男孩通气量增加的特点是呼吸频率增加，而年长男性则是通过潮气量增加来实现的。
