Quantitive Relationship Between Physical Activity and Rest Energy Consumption of Obese Middle School Boys
Objective:To analyze the quantitative relationship between physical activity and rest energy consumption of obese middle school boys,and provide theoretical basis for formulating intervention measures for weight loss.Methods:A stratified random sample of 300 obese middle school boys and 310 normal weight boys were recruited separately,and 7 d data on physical activity and energy consumption were collected using a joint accelerometer and a home-made questionnaire.Correlation analysis and multiple linear regression were used to explore the association between physical activity and rest energy consumption.Logistic regression was used to explore the association between physical activity,energy consumption and obesity.Results:The physical activity and average energy consumption of obese middle school boys were lower than those of normal weight middle school boys(P<0.05);Rest energy consumption is positively correlated with obesity(OR=1.02,95%CI=[1.01,1.04]);Sedentary behavior(SB)and low-intensity physical activity(LPA)significantly increased rest energy consumption(P<0.05);SB and LPA can significantly increase rest energy consumption(P<0.05)by substituting 30 minutes of moderate intensity physical activity(MPA)and 30 minutes of high-intensity physical activity(VPA)at the same time.Conclusion:Effective reduce SB and LPA and increase VPA and MPA is crucial for obesity control in adolescents.
Middle school studentsObesityPhysical activityEnergy consumptionIsochronous substitution model
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