{"title":"Trends in U.S. adolescent physical activity and obesity: A 20-year age-period-cohort analysis","authors":"Travis Loux, Morgan Matusik, Asja Hamzic","doi":"10.1111/ijpo.12996","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Background</h3>\n \n <p>Adolescent obesity can lead to long-term health problems and is a topic of major concern in pediatric and broader medical and public health spheres. Numerous national and state-wide initiatives aimed at increasing physical activity and/or improving nutrition in this age group have assumed the goal of reducing the prevalence adolescent obesity.</p>\n </section>\n \n <section>\n \n <h3> Objectives</h3>\n \n <p>We assess trends in U.S. adolescent physical activity and body mass index between 1999 and 2019.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>Using data from the U.S. Youth Risk Behaviour Surveillance System, we analyse data from 144 544 14-to-18-year-old respondents. We use multilevel linear and logistic regression to perform age-period-cohort analyses attributing changes in physical activity and body mass index over time to these three sources.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>Age and period effects are strong in all outcomes studied. Physical activity consistently decreases with age across the study period. Age trends in obesity have reversed in recent years, with older adolescents now more likely to be have obesity than younger adolescents. Both female and Asian adolescents report less physical activity but lower rates of obesity than their male and non-Asian counterparts.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p>The reversal of obesity trends by age with little change in physical activity over the study period suggests other lifestyle factors have changed over the study period to increase the prevalence of obesity in older adolescents.</p>\n </section>\n </div>","PeriodicalId":217,"journal":{"name":"Pediatric Obesity","volume":"18 3","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Pediatric Obesity","FirstCategoryId":"3","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1111/ijpo.12996","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PEDIATRICS","Score":null,"Total":0}
引用次数: 2
Abstract
Background
Adolescent obesity can lead to long-term health problems and is a topic of major concern in pediatric and broader medical and public health spheres. Numerous national and state-wide initiatives aimed at increasing physical activity and/or improving nutrition in this age group have assumed the goal of reducing the prevalence adolescent obesity.
Objectives
We assess trends in U.S. adolescent physical activity and body mass index between 1999 and 2019.
Methods
Using data from the U.S. Youth Risk Behaviour Surveillance System, we analyse data from 144 544 14-to-18-year-old respondents. We use multilevel linear and logistic regression to perform age-period-cohort analyses attributing changes in physical activity and body mass index over time to these three sources.
Results
Age and period effects are strong in all outcomes studied. Physical activity consistently decreases with age across the study period. Age trends in obesity have reversed in recent years, with older adolescents now more likely to be have obesity than younger adolescents. Both female and Asian adolescents report less physical activity but lower rates of obesity than their male and non-Asian counterparts.
Conclusions
The reversal of obesity trends by age with little change in physical activity over the study period suggests other lifestyle factors have changed over the study period to increase the prevalence of obesity in older adolescents.
期刊介绍：
Pediatric Obesity is a peer-reviewed, monthly journal devoted to research into obesity during childhood and adolescence. The topic is currently at the centre of intense interest in the scientific community, and is of increasing concern to health policy-makers and the public at large.
Pediatric Obesity has established itself as the leading journal for high quality papers in this field, including, but not limited to, the following:
Genetic, molecular, biochemical and physiological aspects of obesity – basic, applied and clinical studies relating to mechanisms of the development of obesity throughout the life course and the consequent effects of obesity on health outcomes
Metabolic consequences of child and adolescent obesity
Epidemiological and population-based studies of child and adolescent overweight and obesity
Measurement and diagnostic issues in assessing child and adolescent adiposity, physical activity and nutrition
Clinical management of children and adolescents with obesity including studies of treatment and prevention
Co-morbidities linked to child and adolescent obesity – mechanisms, assessment, and treatment
Life-cycle factors eg familial, intrauterine and developmental aspects of child and adolescent obesity
Nutrition security and the "double burden" of obesity and malnutrition
Health promotion strategies around the issues of obesity, nutrition and physical activity in children and adolescents
Community and public health measures to prevent overweight and obesity in children and adolescents.
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