Associations between self-reported physical activity and screen time with cardiometabolic risk factors in adolescents: Findings from the 1993 Pelotas (Brazil) Birth Cohort Study
Associations between self-reported physical activity and screen time with cardiometabolic risk factors in adolescents: Findings from the 1993 Pelotas (Brazil) Birth Cohort Study
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DOI：
10.1016/j.ypmed.2018.12.008
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发表时间：
2019-02-01
影响因子：
5.1
通讯作者：
Hallal, Pedro C.
中科院分区：
文献类型：
--
作者：
Mielke, Gregore, I;Brown, Wendy J.;Hallal, Pedro C.
本研究的总体目的是通过检查11岁、15岁和18岁时PA和ST与18岁时心脏代谢风险因素的联合相关性，来检查青春期身体活动（PA）和屏幕时间（ST）与心脏代谢风险指标的相关性。2017年分析了1993年巴西出生队列研究（N = 3613）的数据。在11、15和18岁时收集自我报告的PA和ST数据。在18岁时检查了代谢危险因素（脂肪质量指数、腰围、甘油三酯、血糖、非HDL胆固醇和静息舒张压）。多变量线性回归用于检查四个相互排斥的PA/ST组之间的相关性：1）活动性（>= 1小时/天PA）和低ST（< 5小时/天ST）; 2）活动（>= 1小时/天PA）和高ST（>= 5小时/天ST）; 3）不活动4）在每个年龄的非活动性（<1小时/天PA）和高ST（>= 5小时/天ST），以及18岁时的结果。11岁和15岁时的PA/ST与18岁时的结局之间没有显著相关性。在横断面分析中，最活跃组的青少年在所有结局方面都有明显更好的水平，无论ST如何。ST高的不活跃参与者的血糖和非HDL-C水平最高。对于舒张压，不活动的参与者的值更高。总体而言，较高水平的体力活动似乎比低水平的ST对青少年的心脏代谢健康更重要。
The overall aim of this study was to examine the association of physical activity (PA) and screen time (ST) on indicators of cardio-metabolic risk during adolescence, by examining the combined association of PA and ST at ages 11, 15 and 18 on cardio-metabolic risk factors at 18 years. Data from the 1993 Pelotas (Brazil) Birth Cohort Study (N = 3613) were analysed in 2017. Self-reported PA and ST data were collected at 11, 15 and 18 years. Cardio-metabolic risk factors (fat mass index, waist circumference, triglycerides, blood glucose, non-HDL cholesterol and resting diastolic blood pressure) were examined at age 18. Multivariate linear regression was used to examine the associations between four mutually exclusive PA/ST groups: 1) active (>= 1 h/day PA) and low ST (< 5 h/day ST); 2) active (>= 1 h/day PA) and high ST ( >= 5 h/day ST); 3) inactive (< 1 h/day PA) and low ST (< 5 h/day ST); 4) inactive (< 1 h/day PA) and high ST ( >= 5 h/day ST) at each age, and outcomes at age 18. There were no significant associations between PA/ST at ages 11 and 15 with outcomes at 18 years. In the cross-sectional analyses, adolescents in the most active group had significantly better levels of all the outcomes, regardless of ST. Inactive participants with high ST had the highest levels of glucose and non-HDL-C. For diastolic blood pressure, values were higher among inactive participants. Overall, higher levels of physical activity appeared to be more important than low levels of ST for cardio-metabolic health in adolescents.