The Relative Influence of Diet and Physical Activity on Obesity in China

  • Cui Zhao-Hui (National Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention) ;
  • Li Yan-Ping (National Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention) ;
  • Di Yu-Feng (National Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention) ;
  • Ba Lei (National Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention) ;
  • Hu Xiaoqi (National Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention) ;
  • Ma Guan-Sheng (National Institute for Nutrition and Food Safety, Chinese Center for Disease Control and Prevention)
  • Published : 2004.12.01

Abstract

The purpose of this study is to investigate the relative influence of diet and physical activity on obesity. The subjects were 155 adults aged 35-52 years from 24 neighborhood committees in 4 urban districts of Beijing (male : 78, female : 77). They were divided into normal weight, overweight and obese groups according to their BMI. The general information of the subjects was collected by interview-administered questionnaire. Dietary intake was obtained by three-day(two weekdays and one weekend day) food weighted method, physical activity was assessed by a validated combination of data obtained from activity monitors, bicycling information and activity records. There were no significant differences of age, gender, height, educational, family economic level, smoking and drinking between different groups. The proportion of flour intake was higher in obese group compared to normal weight and overweight groups, and that of vegetables is lower in obese group. The physical activity (PAL) was not significantly different between two groups of the normal, overweight and obese groups. After the adjustment for confounding factors using logistic regression model, we found that the proportion of flour intake was positively associated with obesity, while the proportion of vegetable intake was inversely associated with obesity. It is concluded that dietary patterns were associated with obesity and diets composed of more vegetables and less staple combined with physical activities could contribute to obesity prevention.

Keywords

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