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Objective To study the effect of physical activities and dietary intervention on metabolic syndrome (MS) in primary school students.Methods Either one-year physical activities (PA) or dietary intervention was conducted in Grade 1-5 children from eight primary schools in Haidian district,Beijing.A ‘happy 10 minutes' program was held in the PA group,while the dietary group receiving nutrition lectures.Baseline and post-intervention data on height,weight,waist circumference,serum lipids,glucose,and blood pressure were collected.Results The prevalence of MS at baseline was 9.0％.After intervention programs were carried out,improvements on triglyceride,high density lipoprotein,fasting blood glucose,diastolic blood pressure and waist circumference in the dietary group or PA group were seen,with the dietary group showed better effects than the PA group.The prevalence of MS decreased from 10.4％ to 4.6％ in the dietary group with statistically significant difference,while it increased in both the PA group and the control group.Girls showed better effects in the dietary group.Older students showed better effects than the younger students in the PA group.In non-overweight and overweight students of the dietary intervention group,the MS related components were significantly improved.Conclusion The prevalence of metabolic syndrome was relatively high in the primary school students in Beijing.Education on nutrition could reduce the prevalence and improve the related components,which seemed to be more effective than in the PA intervention.Sex,age and nutritional status were the confounding factors for intervention programs.
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Objective Using the objective detection devices to explore the physical activity status in order to provide evidence reated to the physical activity intervention program on child obesity in elementary students.Methods Subjects were elementary students from grades 1-5 of 4 schools in Haidian and Dongcheng districts,Beijing.After measuring their height and weight,an motion sensor was applied to measure physical activities in these 379 pupils.Results Time on moderate to vigorous physical activities (MVPA) among pupils was 74.09 min and the ratio of meeting the recommended time of physical activity was 68.9％.The MVPA time in males (79.46 min) was more than that in females (66.07 min) (P＜0.05),with the ratio of meeting the recommended physical activity time in males (78.0％) also larger than that in females (55.3％) (P＜0.05).There was no significant difference between low age group and high age group (P＞0.05),however,there showed significant difference in light physical activity time among the normal group,overweight group and the obese group (P＜0.05).However,there was no significant difference found in MVPA time among the three groups (P＞ 0.05).Conclusion The ratio of meeting the recommend physical activity time was low.MVPA time should be increased to guarantee the athletic effects and to improve the health stutas in the pupils.
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Objective To study the daily physical activity patterns of pupils in Beijing, and to identify the association between the socioeconomic status (SES) and physical activities. Methods 1502 pupils were recruited from 2-5 grades of eight primary schools in Beijing. Information on physical activity, sedentary activity, and transportation styles inside and outside schools were collected using a "7-day physical activity questionnaire". Results Gymnastics, running, playing games, walking in queues etc. Were the most common activities at school, with the proportion as 94.13%, 85.55%, 77.26%, and 71.32% respectively. Physical labor, playing games, running and walking were the common activities outside schools, with the proportion as 72.14%, 69.70%,65.05%, and 64.64% respectively. However, pupils seldom participated in the ball games. Significant differences between SES groups were observed on the patterns of both physical and sedentary activities. Compared to low-SES pupils, high-SES pupils more frequently participated in dancing, walking upstairs or downstairs, swimming, skating, but less frequently (P＜0.05) in walking, rope skipping, kicking shuttlecock or rubber band skipping. Conclusion Data from our study showed that both the quantity and the distribution of different activities did not meet the need of the Chinese children. Physical activity in association with SES was also demonstrated.
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ghest. Conclusion In general, both the prevalence rates of overweight and obesity in Chinese minority students were comparatively low. However, in some minority groups the prevalence had already become higher, which demands early prevention.
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myopia rates in 2005 were 29.5%, 39.1%, 10.1%, 42.6%, 41.1%, for boys and 45.4%, 50.0%, 15.4%, 49.7%, 46.7% for girls. Conclusion In order to improve the health of students in minority regions, we need to promote health education at schools.