Background Numerous studies have shown that time spent on television （TV） viewing is positively associated with obesity. The aim of this study was to examine the potential association between excessive TV viewing an...Background Numerous studies have shown that time spent on television （TV） viewing is positively associated with obesity. The aim of this study was to examine the potential association between excessive TV viewing and obesity, especially abdominal obesity, among children and adolescents in mainland of China. Methods A total of 4708 children and adolescents aged 6 to 16 years were recruited for the study. Anthropometric measures were conducted by trained personnels. A self-report questionnaire was designed to gather information on TV time, physical activity, diet habits, maternal body mass index （BMI）, birth weight, and on general demographics, including age and gender, and socio-economic status. Results The prevalence of obesity in this group was 6.5%. Linear regression analysis indicated that high TV viewing time （〉1.5 h/d） was significantly associated with higher BMI, waist circumference （WC）, and waist-to-height ratio （WHtR）. In addition, the high TV time group had 1.3 times the odds of obesity as compared to the low TV time group. Likewise, high TV viewing time increased the OR value 1.32 and 1.21 times higher in WC- and WHtR-defined obesity. Within the non-obesity group, high TV viewing time was also positively associated with higher WC and WHtR. All these correlations remained significant after adjustment for the confounding variables. Conclusions Excessive TV viewing might increase the risk of obesity among Chinese youth. Reducing TV viewing time may be beneficial to improve health outcomes, both in the short- and long term. This finding should be taken into account in future designs of intervention policies to prevent childhood and adolescent obesity in China.展开更多
文摘目的应用2014年辽宁省学生体质与健康调研资料分析青少年握力与血压的相关性。方法本研究选取16 892例13~18岁汉族初、高中学生为研究对象。握力的测量为用有力手最大力紧握握力计,测试2次取最大值。采用一般线性回归模型分析握力与血压的关系。将相关变量按照年龄、性别Z评分转换后进行分析。结果调节年龄、性别、地区、体重指数(body mass index, BMI)、每天体育锻炼时间和心肺功能后,在男生及女生中,握力与收缩压及舒张压均呈正相关(均有P<0.001)。将握力四分位分组,随着握力的增加,收缩压及舒张压值均逐渐增大(均有P趋势<0.001)。结论青少年肌肉力量与血压之间呈正相关关系。今后将探索青少年握力与血压相关性的机制,以进一步确定增加肌肉力量的抗阻训练是否可以在青少年中广泛开展。
文摘Background Numerous studies have shown that time spent on television （TV） viewing is positively associated with obesity. The aim of this study was to examine the potential association between excessive TV viewing and obesity, especially abdominal obesity, among children and adolescents in mainland of China. Methods A total of 4708 children and adolescents aged 6 to 16 years were recruited for the study. Anthropometric measures were conducted by trained personnels. A self-report questionnaire was designed to gather information on TV time, physical activity, diet habits, maternal body mass index （BMI）, birth weight, and on general demographics, including age and gender, and socio-economic status. Results The prevalence of obesity in this group was 6.5%. Linear regression analysis indicated that high TV viewing time （〉1.5 h/d） was significantly associated with higher BMI, waist circumference （WC）, and waist-to-height ratio （WHtR）. In addition, the high TV time group had 1.3 times the odds of obesity as compared to the low TV time group. Likewise, high TV viewing time increased the OR value 1.32 and 1.21 times higher in WC- and WHtR-defined obesity. Within the non-obesity group, high TV viewing time was also positively associated with higher WC and WHtR. All these correlations remained significant after adjustment for the confounding variables. Conclusions Excessive TV viewing might increase the risk of obesity among Chinese youth. Reducing TV viewing time may be beneficial to improve health outcomes, both in the short- and long term. This finding should be taken into account in future designs of intervention policies to prevent childhood and adolescent obesity in China.
