韩国人群中身体活动与由腰高比和体重指数定义的肥胖之间的关联。
Associations between Physical Activity and Obesity Defined by Waist-To-Height Ratio and Body Mass Index in the Korean Population.
作者信息
Lee On, Lee Duck-Chul, Lee Sukho, Kim Yeon Soo
机构信息
Department of Physical Education, College of Education, Seoul National University, Seoul, South Korea.
Department of Kinesiology, College of Human Sciences, Iowa State University, Ames, Iowa, United States of America.
出版信息
PLoS One. 2016 Jul 22;11(7):e0158245. doi: 10.1371/journal.pone.0158245. eCollection 2016.
OBJECTIVE
This study investigated the associations between physical activity and the prevalence of obesity determined by waist-to-height ratio (WHtR) and body mass index (BMI).
METHODS
This is the first study to our knowledge on physical activity and obesity using a nationally representative sample of South Korean population from The Korea National Health and Nutrition Examination Survey. We categorized individuals into either non-obese or obese defined by WHtR and BMI. Levels of moderate-to-vigorous physical activity were classified as 'Inactive', 'Active', and 'Very active' groups based on the World Health Organization physical activity guidelines. Multivariable logistic regression was used to examine the associations between physical activity and the prevalence of obesity.
RESULTS
Physical activity was significantly associated with a lower prevalence of obesity using both WHtR and BMI. Compared to inactive men, odds ratios (ORs) (95% confidence intervals [CIs]) for obesity by WHtR ≥0.50 were 0.69 (0.53-0.89) in active men and 0.76 (0.63-0.91) in very active men (p for trend = 0.007). The ORs (95% CIs) for obesity by BMI ≥25 kg/m2 were 0.78 (0.59-1.03) in active men and 0.82 (0.67-0.99) in very active men (p for trend = 0.060). The ORs (95% CIs) for obesity by BMI ≥30 kg/m2 were 0.40 (0.15-0.98) in active men and 0.90 (0.52-1.56) in very active men (p for trend = 0.978). Compared to inactive women, the ORs (95% CIs) for obesity by WHtR ≥0.50 were 0.94 (0.75-1.18) in active women and 0.84 (0.71-0.998) in very active women (p for trend = 0.046). However, no significant associations were found between physical activity and obesity by BMI in women.
CONCLUSIONS
We found more significant associations between physical activity and obesity defined by WHtR than BMI. However, intervention studies are warranted to investigate and compare causal associations between physical activity and different obesity measures in various populations.
目的
本研究调查了身体活动与通过腰高比（WHtR）和体重指数（BMI）确定的肥胖患病率之间的关联。
方法
据我们所知，这是第一项使用韩国国家健康与营养检查调查中具有全国代表性的韩国人群样本，研究身体活动与肥胖的研究。我们根据WHtR和BMI将个体分为非肥胖或肥胖。根据世界卫生组织的身体活动指南，将中度至剧烈身体活动水平分为“不活跃”、“活跃”和“非常活跃”组。使用多变量逻辑回归来检验身体活动与肥胖患病率之间的关联。
结果
使用WHtR和BMI时，身体活动与较低的肥胖患病率显著相关。与不活跃的男性相比，腰高比≥0.50的肥胖的优势比（OR）（95%置信区间[CI]）在活跃男性中为0.69（0.53 - 0.89），在非常活跃的男性中为0.76（0.63 - 0.91）（趋势p值 = 0.007）。BMI≥25 kg/m²的肥胖的OR（95% CI）在活跃男性中为0.78（0.59 - 1.03），在非常活跃的男性中为0.82（0.67 - 0.99）（趋势p值 = 0.060）。BMI≥30 kg/m²的肥胖的OR（95% CI）在活跃男性中为0.40（0.15 - 0.98），在非常活跃的男性中为0.90（0.52 - 1.56）（趋势p值 = 0.978）。与不活跃的女性相比，腰高比≥0.50的肥胖的OR（95% CI）在活跃女性中为0.94（0.75 - 1.18），在非常活跃的女性中为0.84（0.71 - 0.998）（趋势p值 = 0.046）。然而，在女性中未发现身体活动与BMI定义的肥胖之间存在显著关联。
结论
我们发现身体活动与由WHtR定义的肥胖之间的关联比与BMI定义的肥胖之间的关联更显著。然而，有必要进行干预研究，以调查和比较不同人群中身体活动与不同肥胖测量指标之间的因果关联。
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