Background:Prolonged sitting and reduced physical activity lead to low energy expenditures.However,little is known about the joint impact of daily sitting time and physical activity on body fat distribution.We investi...Background:Prolonged sitting and reduced physical activity lead to low energy expenditures.However,little is known about the joint impact of daily sitting time and physical activity on body fat distribution.We investigated the independent and joint associations of daily sitting time and physical activity with body fat among adults.Methods:This was a cross-sectional analysis of U.S.nationally representative data from the National Health and Nutrition Examination Survey2011-2018 among adults aged 20 years or older.Daily sitting time and leisure-time physical activity(LTPA)were self-reported using the Global Physical Activity Questionnaire.Body fat(total and trunk fat percentage)was determined via dual X-ray absorptiometry.Results:Among 10,808 adults,about 54.6%spent 6 h/day or more sitting;more than one-half reported no LTPA(inactive)or less than 150 min/week LTPA(insufficiently active)with only 43.3%reported 150 min/week or more LTPA(active)in the past week.After fully adjusting for sociodemographic data,lifestyle behaviors,and chronic conditions,prolonged sitting time and low levels of LTPA were associated with higher total and trunk fat percentages in both sexes.When stratifying by LTPA,the association between daily sitting time and body fat appeared to be stronger in those who were inactive/insuufficiently active.In the joint analyses,inactive/insuufficiently active adults who reported sitting more than 8 h/day had the highest total(female:3.99%(95%confidence interval(95%CI):3.09%-4.88%);male:3.79%(95%CI:2.75%-4.82%))and trunk body fat percentages(female:4.21%(95%CI:3.09%-5.32%);male:4.07%(95%CI:2.95%-5.19%))when compared with those who were active and sitting less than 4 h/day.Conclusion:Prolonged daily sitting time was associated with increased body fat among U.S.adults.The higher body fat associated with 6 h/day sitting may not be offset by achieving recommended levels of physical activity.展开更多
利用Citespace V可视化分析软件,以web of science收录的2013-2023年的积极情绪扩建理论研究领域的核心期刊为研究对象,通过对159篇相关文献数据分析并绘制可视化图谱,对积极情绪扩建理论近10年研究的发文量、科研作者、科研机构、研究...利用Citespace V可视化分析软件,以web of science收录的2013-2023年的积极情绪扩建理论研究领域的核心期刊为研究对象,通过对159篇相关文献数据分析并绘制可视化图谱,对积极情绪扩建理论近10年研究的发文量、科研作者、科研机构、研究热点与研究趋势等进行可视化分析。结果表明:文献量自2017年起始终处于波浪式递增;美国北卡罗来纳大学教堂山分校Fredrickson教授及其小组是积极情绪扩建理论的主要研究团队;研究热点与前沿主要集中在积极情绪、扩展与建构理论、积极心理、幸福感、生活满意度;该理论在跨学科研究中获得普遍认可,并广泛应用于抑郁症患者的临床治疗。建议国内学者积极探索适用于我国青少年心理健康发展的理论体系,加强高校、科研院所之间的合作,实现资源共享,提高研究质量,对进一步丰富和提高我国积极心理研究具有十分重要的意义。展开更多
文摘Background:Prolonged sitting and reduced physical activity lead to low energy expenditures.However,little is known about the joint impact of daily sitting time and physical activity on body fat distribution.We investigated the independent and joint associations of daily sitting time and physical activity with body fat among adults.Methods:This was a cross-sectional analysis of U.S.nationally representative data from the National Health and Nutrition Examination Survey2011-2018 among adults aged 20 years or older.Daily sitting time and leisure-time physical activity(LTPA)were self-reported using the Global Physical Activity Questionnaire.Body fat(total and trunk fat percentage)was determined via dual X-ray absorptiometry.Results:Among 10,808 adults,about 54.6%spent 6 h/day or more sitting;more than one-half reported no LTPA(inactive)or less than 150 min/week LTPA(insufficiently active)with only 43.3%reported 150 min/week or more LTPA(active)in the past week.After fully adjusting for sociodemographic data,lifestyle behaviors,and chronic conditions,prolonged sitting time and low levels of LTPA were associated with higher total and trunk fat percentages in both sexes.When stratifying by LTPA,the association between daily sitting time and body fat appeared to be stronger in those who were inactive/insuufficiently active.In the joint analyses,inactive/insuufficiently active adults who reported sitting more than 8 h/day had the highest total(female:3.99%(95%confidence interval(95%CI):3.09%-4.88%);male:3.79%(95%CI:2.75%-4.82%))and trunk body fat percentages(female:4.21%(95%CI:3.09%-5.32%);male:4.07%(95%CI:2.95%-5.19%))when compared with those who were active and sitting less than 4 h/day.Conclusion:Prolonged daily sitting time was associated with increased body fat among U.S.adults.The higher body fat associated with 6 h/day sitting may not be offset by achieving recommended levels of physical activity.
文摘利用Citespace V可视化分析软件,以web of science收录的2013-2023年的积极情绪扩建理论研究领域的核心期刊为研究对象,通过对159篇相关文献数据分析并绘制可视化图谱,对积极情绪扩建理论近10年研究的发文量、科研作者、科研机构、研究热点与研究趋势等进行可视化分析。结果表明:文献量自2017年起始终处于波浪式递增;美国北卡罗来纳大学教堂山分校Fredrickson教授及其小组是积极情绪扩建理论的主要研究团队;研究热点与前沿主要集中在积极情绪、扩展与建构理论、积极心理、幸福感、生活满意度;该理论在跨学科研究中获得普遍认可,并广泛应用于抑郁症患者的临床治疗。建议国内学者积极探索适用于我国青少年心理健康发展的理论体系,加强高校、科研院所之间的合作,实现资源共享,提高研究质量,对进一步丰富和提高我国积极心理研究具有十分重要的意义。
