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Joint association of physical activity/screen time and diet on CVD risk factors in 10-year-old children

Frontiers of Medicine 2012年第4期6卷 428-435页

作者： Clemens Drenowatz Joseph J.Carlson Karin A.Pfeiffer Joey C.Eisenmann Department of Kinesiology Michigan State UniversityEast LansingMI 48824USA Department of Radiology Division of Sports and Cardiovascular NutritionMichigan State UniversityEast LansingMI 48824USA

The increasing prevalence of childhood overweight and obesity has been associated with an increased risk for cardiovascular disease(CVD).While several studies examined the effect of single behaviors such as physical activity(PA),sedentary behavior or diet on CVD risk,there is a lack of research on combined associations,specifically in ***,the purpose of this study was to examine the joint association of PA or screen time(ST)and diet on CVD risk factors in ***,STand diet were assessed via questionnaire in 210 fifth grade students(age:10.6±0.4 years).The healthy eating index(HEI)was subsequently calculated as indicator for diet ***,weight,% body fat,and resting blood pressure were measured according to standard procedures and blood samples obtained via fingerprick were assayed for blood *** cholesterol HDL ratio(TC:HDL),mean arterial pressure(MAP),and % body fat were used as indicators of CVD risk.55% of children did not meet current PA recommendations on at least 5 days/week and 70% exceeded current recommendations for ***,only 2.5% possessed a“good”diet(HEI>80).There was no significant association of PA or STand diet on CVD risk *** TC:HDL,MAP,and % body fat nor the total CVD risk score was significantly correlated with diet,PA,or *** in the high PA group,however,had significantly better diet *** the fact that self-reported PA,ST,or dietary intake were not directly related to CVD risk in this sample,higher activity levels were associated with a healthier diet and lower ST indicating an overall healthier lifestyle of this subgroup.

关键词： exercise sedentary behavior metabolic syndrome health behavior adolescents TV time healthy eating index

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