Screen-based sedentary behavior during adolescence and pulmonary function in a birth cohort

International Journal of Behavioral Nutrition and Physical Activity

Research

Michael Pratt¹  Ana M. B. Menezes²  Bruna Gonçalves C. da Silva²  Fernando C. Wehrmeister²  Fernando C. Barros³ 

[1] Institute of Public Health, Department of Family Medicine and Public Health, School of Medicine, University of California, San Diego, CA, USA;Postgraduate Program in Epidemiology, Federal University of Pelotas, Pelotas, RS, Brazil;Postgraduate Program in Health and Behavior, Catholic University of Pelotas, Pelotas, RS, Brazil;

关键词: Adolescents;    Epidemiologic studies;    Lifestyle;    Lung;    Respiratory function;   

DOI  :  10.1186/s12966-017-0536-5

 received in 2016-11-23, accepted in 2017-06-13,  发布年份 2017

来源: Springer

【 摘 要 】

BackgroundAdolescents spend many hours in sitting activities as television viewing, video game playing and computer use. The relationship between sedentary behavior and respiratory health remains poorly elucidated. To date there have been no studies evaluating the relationship between sedentary behavior and pulmonary function in young populations. The purpose of this study is to examine the association between the trajectory of screen-based sedentary behavior from 11 to 18 years and pulmonary function at 18 years in a Brazilian birth cohort.MethodsData from a longitudinal prospective study conducted among the participants of the 1993 Pelotas (Brazil) Birth Cohort. Time spent on television, video games, and computers during a weekday was self-reported at ages 11, 15 and 18 years. For each age, sedentary behavior was defined as the sum of time spent on these screen-based activities. To evaluate the sedentary behavior trajectory during adolescence group-based trajectory modeling was used. Outcome variables were three pulmonary function parameters: forced expiratory volume in one second (FEV1), forced vital capacity (FVC), and peak expiratory flow (PEF), evaluated by spirometry, at 18 years expressed as z-scores. Crude and adjusted linear regressions, stratified by sex, were performed.ResultsThe three-group trajectory of sedentary behavior was the best fitting model. The trajectory groups were: always high (representing 38.8% of the individuals), always moderate (54.1%), and always low (7.1%). In the adjusted analyses, boys in the always-low group for sedentary behavior had higher FVC at 18 years (β = 0.177; 95% CI:0.027;0.327; p = 0.021) than boys in the always-high group. There were no differences for other pulmonary function parameters in boys. No significant association was found for girls.ConclusionThe trajectory of screen-based sedentary behavior throughout adolescence was not consistent associated with pulmonary function at 18 years.

【 授权许可】

CC BY   
© The Author(s). 2017