Katzmarzyk Peter T
School of Kinesiology and Health Studies, Queen's University, Kingston, Ontario, Canada.
Obesity (Silver Spring). 2008 Jan;16(1):184-90. doi: 10.1038/oby.2007.51.
To investigate ethnic differences in obesity and physical activity among Aboriginal and non-Aboriginal Canadians.
The sample included 24,279 Canadians (1,176 Aboriginals, 23,103 non-Aboriginals) aged 2-64 years from the 2004 Canadian Community Health Survey (CCHS). Adult participants were classified as underweight/normal weight, overweight (BMI 25-29.9 kg/m(2)) or obese (BMI > or = 30 kg/m(2)). Children and youth 2-17 years of age were classified as normal weight, overweight or obese based on the International Obesity Task Force criteria. Leisure-time physical activity levels over the previous 3 months were obtained by questionnaire in those aged 12-64 years.
The prevalence of obesity in adults was 22.9% (men: 22.9%; women: 22.9%), and the prevalence was higher among Aboriginals (37.8%) compared to non-Aboriginals (22.6%). The prevalence of obesity in children and youth was 8.2% (boys: 9.2%; girls: 7.2%), and the prevalence was higher among Aboriginals (15.8%) compared to non-Aboriginals (8.0%). In both youth and adults, the odds for obesity were higher among Aboriginals (youth: OR = 2.3 (95% CI: 1.4-3.8); adults: OR = 2.4 (95% CI: 1.6-3.6)) after adjustment for a number of covariates. There were no ethnic differences in the prevalence of physical inactivity; however, physical inactivity was a predictor of obesity in both the Aboriginal and non-Aboriginal samples.
The prevalence of obesity is higher among Canadian Aboriginals compared to the rest of the population. Further research is required to better delineate the determinants of obesity and the associated health consequences in this population.
调查加拿大原住民与非原住民在肥胖及身体活动方面的种族差异。
样本包括来自2004年加拿大社区健康调查（CCHS）的24279名2至64岁的加拿大人（1176名原住民，23103名非原住民）。成年参与者被分为体重过轻/正常体重、超重（体重指数25 - 29.9千克/平方米）或肥胖（体重指数≥30千克/平方米）。2至17岁的儿童和青少年根据国际肥胖特别工作组的标准被分为正常体重、超重或肥胖。通过问卷调查获取12至64岁人群在前三个月的休闲时间身体活动水平。
成年人肥胖患病率为22.9%（男性：22.9%；女性：22.9%），原住民（37.8%）的患病率高于非原住民（22.6%）。儿童和青少年肥胖患病率为8.2%（男孩：9.2%；女孩：7.2%），原住民（15.8%）的患病率高于非原住民（8.0%）。在对多个协变量进行调整后，无论是青少年还是成年人，原住民肥胖的几率都更高（青少年：比值比 = 2.3（95%置信区间：1.4 - 3.8）；成年人：比值比 = 2.4（95%置信区间：1.6 - 3.6））。身体不活动的患病率不存在种族差异；然而，身体不活动是原住民和非原住民样本中肥胖的一个预测因素。
与加拿大其他人群相比，原住民的肥胖患病率更高。需要进一步研究以更好地描述该人群肥胖的决定因素及其相关健康后果。
