Lewis C E, Smith D E, Wallace D D, Williams O D, Bild D E, Jacobs D R
Division of Preventive Medicine, School of Medicine, University of Alabama at Birmingham 35205, USA.
Am J Public Health. 1997 Apr;87(4):635-42. doi: 10.2105/ajph.87.4.635.
This study estimated the amount of weight change in a biracial cohort of young adults and the separate components attributable to time-related and aging-related changes, as well as identified possible determinants of weight change.
In this population-based prospective study of 18- to 30-year-old African-American and White men and women, body weight and prevalence of overweight were measured from 1985/86 to 1992/93.
Average weight increased over the 7 years, increases ranging from 5.2 kg (SE = 0.2, n = 811) in White women to 8.5 kg (SE = 0.3, n = 882) in African-American women. Significant time-related increases in weight, ranging from 2.0 kg (SE = 1.0) in White women to 4.8 kg (SE = 1.0, n = 711) in African-American men, accounted for 40% to 60% of the average total weight gain. Aging-related increases were also significant, ranging from 2.6 kg (SE = 0.8, n = 944) in White men to 5.0 kg (SE = 1.1) in African-American women. The prevalence of overweight increased progressively in each group. Decreased physical fitness was most strongly associated with weight gain in both sexes.
The observed dramatic time-related weight gains, most likely due to secular (period-related) trends, are a serious public health concern.
本研究估计了一个年轻成年人的混血队列中的体重变化量，以及与时间相关和与衰老相关变化所导致的体重变化的单独组成部分，并确定了体重变化的可能决定因素。
在这项针对18至30岁非裔美国人和白人男性及女性的基于人群的前瞻性研究中，于1985/86年至1992/93年期间测量了体重和超重患病率。
在这7年中，平均体重有所增加，白人女性增加了5.2千克（标准误 = 0.2，n = 811），非裔美国女性增加了8.5千克（标准误 = 0.3，n = 882）。与时间相关的显著体重增加，从白人女性的2.0千克（标准误 = 1.0）到非裔美国男性的4.8千克（标准误 = 1.0，n = 711），占平均总体重增加量的40%至60%。与衰老相关的体重增加也很显著，从白人男性的2.6千克（标准误 = 0.8，n = 944）到非裔美国女性的5.0千克（标准误 = 1.1）。每组中超重患病率都逐渐增加。体能下降与两性体重增加的关联最为密切。
观察到的与时间相关的显著体重增加，很可能是由于长期（与时期相关）趋势导致的，这是一个严重的公共卫生问题。
