Bell A Colin, Ge Keyou, Popkin Barry M
Department of Nutrition and Carolina Population Center, University of North Carolina at Chapel Hill, North Carolina 27516-3997, USA.
Obes Res. 2002 Apr;10(4):277-83. doi: 10.1038/oby.2002.38.
Dependence on motorized forms of transportation may contribute to the worldwide obesity epidemic. Shifts in transportation patterns occurring in China provide an ideal opportunity to study the association between vehicle ownership and obesity. Our objective was to determine whether motorized forms of transportation promote obesity.
A multistage random-cluster sampling process was used to select households from eight provinces in China. Data were included on household vehicle ownership and individual anthropometric and sociodemographic status. Cross-sectional data (1997) from 4741 Chinese adults aged 20 to 55 years were used to explore the association between vehicle ownership and obesity. Cohort data (1989 to 1997) from 2485 adults aged 20 to 45 years in 1989 (59% follow-up) were used to measure the impact of vehicle acquisition on the odds of becoming obese.
Our main outcome measure was current obesity status and the odds of becoming obese over an 8-year period. In 1997, 84% of adults did not own motorized transportation. However, the odds of being obese were 80% higher (p < 0.05) for men and women in households who owned a motorized vehicle compared with those who did not own a vehicle. Fourteen percent of households acquired a motorized vehicle between 1989 and 1997. Compared with those whose vehicle ownership did not change, men who acquired a vehicle experienced a 1.8-kg greater weight gain (p < 0.05) and had 2 to 1 odds of becoming obese.
Encouraging active forms of transportation may be one way to protect against obesity.
对机动化交通方式的依赖可能是导致全球肥胖流行的一个因素。中国正在发生的交通模式转变为研究车辆拥有情况与肥胖之间的关联提供了一个理想契机。我们的目的是确定机动化交通方式是否会促使肥胖。
采用多阶段随机整群抽样方法从中国八个省份选取家庭。收集的数据包括家庭车辆拥有情况以及个人人体测量数据和社会人口学状况。利用1997年4741名年龄在20至55岁之间的中国成年人的横断面数据，探讨车辆拥有情况与肥胖之间的关联。利用1989年2485名年龄在20至45岁之间成年人的队列数据（随访率为59%）来衡量购置车辆对肥胖几率的影响。
我们的主要观察指标是当前肥胖状况以及8年间肥胖的几率。1997年，84%的成年人没有机动化交通工具。然而，拥有机动车的家庭中的男性和女性肥胖几率比没有车辆的家庭高80%（p<0.05）。14%的家庭在1989年至1997年间购置了机动车。与车辆拥有情况未改变的人相比，购置车辆的男性体重增加了1.8千克（p<0.05），肥胖几率是其他人的2至1倍。
鼓励采用积极的交通方式可能是预防肥胖的一种方法。
