Watson A W, O'Donovan D J
Q J Exp Physiol Cogn Med Sci. 1977 Oct;62(4):325-32. doi: 10.1113/expphysiol.1977.sp002404.
The relationships between level of habitual activity, physical working capacity at a heart rate of 170 beats per minute (PWC170), % fat and body size, have been investigated in 85 post-puberal males aged 16 to 18. Percentage of fat was estimated from the sum of four skinfold thickness and body size characterized by: height and weight; arm, chest, calf and thigh circumferences; bicromial and bi-iliac diameters. PWC170 was found to be significantly related to level of habitual activity and to most measures of body size; multiple regression analysis indicates that level of habitual activity and size respectively account for 34% and 37% of the variance in PWC170. When differences in the body weight of the subjects were statistically removed, % fat was related positively to arm circumference, and negatively to height and bi-iliac diameter. There was no relationship between % fat and level of habitual activity. The significance of these results is discussed.
对85名年龄在16至18岁的青春期后男性，研究了习惯性活动水平、心率为每分钟170次时的体力工作能力（PWC170）、体脂百分比和体型之间的关系。体脂百分比通过四项皮褶厚度之和估算得出，体型则由以下指标表征：身高和体重；手臂、胸部、小腿和大腿周长；肩峰间径和髂棘间径。研究发现，PWC170与习惯性活动水平以及大多数体型指标显著相关；多元回归分析表明，习惯性活动水平和体型分别占PWC170变异的34%和37%。当统计学上消除受试者体重差异后，体脂百分比与手臂周长呈正相关，与身高和髂棘间径呈负相关。体脂百分比与习惯性活动水平之间无相关性。对这些结果的意义进行了讨论。
