身体活动、看电视时间与腰围的12年变化
Physical Activity, Television Viewing Time, and 12-Year Changes in Waist Circumference.
作者信息
Shibata A I, Oka Koichiro, Sugiyama Takemi, Salmon J O, Dunstan David W, Owen Neville
机构信息
1Physical Activity and Behavioural Epidemiology Laboratories, Baker IDI Heart and Diabetes Institute, Melbourne, Victoria, AUSTRALIA; 2Faculty of Health and Sport Sciences, University of Tsukuba, Ibaraki, JAPAN; 3Faculty of Sport Sciences, Waseda University, Saitama, JAPAN; 4School of Design, Swinburne University of Technology, Melbourne, Victoria, AUSTRALIA; 5School of Population Health, University of South Australia, Adelaide, AUSTRALIA; 6Centre for Physical Activity and Nutrition Research, Deakin University, Melbourne, Victoria, AUSTRALIA; 7School of Sports Science, Exercise and Health, the University of Western Australia, Perth, AUSTRALIA; 8School of Population Health, the University of Queensland, Brisbane, QLD, AUSTRALIA; 9School of Exercise and Nutrition Sciences, Deakin University, Melbourne, Victoria, AUSTRALIA; 10School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, AUSTRALIA; 11School of Population and Global Health, Melbourne University, Melbourne, Victoria, AUSTRALIA; and 12Department of Medicine, Monash University, Melbourne, Victoria, AUSTRALIA.
出版信息
Med Sci Sports Exerc. 2016 Apr;48(4):633-40. doi: 10.1249/MSS.0000000000000803.
PURPOSE
Both moderate-to-vigorous physical activity (MVPA) and sedentary behavior can be associated with adult adiposity. Much of the relevant evidence is from cross-sectional studies or from prospective studies with relevant exposure measures at a single time point before weight gain or incident obesity. This study examined whether changes in MVPA and television (TV) viewing time are associated with subsequent changes in waist circumference, using data from three separate observation points in a large population-based prospective study of Australian adults.
METHODS
Data were obtained from the Australian Diabetes, Obesity, and Lifestyle study collected in 1999-2000 (baseline), 2004-2005 (wave 2), and 2011-2012 (wave 3). The study sample consisted of adults age 25 to 74 yr at baseline who also attended site measurement at three time points (n = 3261). Multilevel linear regression analysis examined associations of initial 5-yr changes in MVPA and TV viewing time (from baseline to wave 2) with 12-yr change in waist circumference (from baseline to wave 3), adjusting for well-known confounders.
RESULTS
As categorical predictors, increases in MVPA significantly attenuated increases in waist circumference (P for trend < 0.001). TV viewing time change was not significantly associated with changes in waist circumference (P for trend = 0.06). Combined categories of MVPA and TV viewing time changes were predictive of waist circumference increases; compared with those who increased MVPA and reduced TV viewing time, those who reduced MVPA and increased TV viewing time had a 2-cm greater increase in waist circumference (P = 0.001).
CONCLUSION
Decreasing MVPA emerged as a significant predictor of increases in waist circumference. Increasing TV viewing time was also influential, but its impact was much weaker than MVPA.
目的
中度至剧烈身体活动（MVPA）和久坐行为都可能与成人肥胖相关。许多相关证据来自横断面研究或前瞻性研究，这些研究在体重增加或发生肥胖之前的单个时间点进行相关暴露测量。本研究利用一项针对澳大利亚成年人的大型基于人群的前瞻性研究中三个不同观察点的数据，检验了MVPA和看电视（TV）时间的变化是否与随后腰围的变化相关。
方法
数据来自1999 - 2000年（基线）、2004 - 2005年（第2波）和2011 - 2012年（第3波）收集的澳大利亚糖尿病、肥胖与生活方式研究。研究样本包括基线时年龄在25至74岁且在三个时间点都参加了现场测量的成年人（n = 3261）。多水平线性回归分析检验了MVPA和看电视时间的初始5年变化（从基线到第2波）与腰围的12年变化（从基线到第3波）之间的关联，并对已知的混杂因素进行了调整。
结果
作为分类预测因素，MVPA的增加显著减弱了腰围的增加（趋势P < 0.001）。看电视时间的变化与腰围变化无显著关联（趋势P = 0.06）。MVPA和看电视时间变化的组合类别可预测腰围增加；与MVPA增加且看电视时间减少的人相比，MVPA减少且看电视时间增加的人腰围增加多2厘米（P = 0.001）。
结论
MVPA的减少成为腰围增加的一个重要预测因素。看电视时间的增加也有影响，但其影响比MVPA弱得多。
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