Age, period and cohort effects and the predictors of physical activity and sedentary behaviour among Chinese children, from 2004 to 2011
| Autor: | Xiangui He, Meihua Shen, Xinping Wei, Xiaodong Jia, Hui Wang, Shurong Zou, Yu Zang, Jiajie Zang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Gerontology
Male medicine.medical_specialty Longitudinal study China Adolescent Health Behavior 030209 endocrinology & metabolism Environment Metabolic equivalent 03 medical and health sciences 0302 clinical medicine Age Sex Factors Residence Characteristics Epidemiology Cohort Effect Metabolic Equivalent medicine Humans 030212 general & internal medicine Longitudinal Studies Child Children Exercise Sedentary lifestyle business.industry Physical activity lcsh:Public aspects of medicine Urbanization Public Health Environmental and Occupational Health Cohort Age Factors lcsh:RA1-1270 Health Surveys Cohort effect Socioeconomic Factors Period Household income Female Public Health Sedentary Behavior business Demography Cohort study Research Article |
| Zdroj: | BMC Public Health BMC Public Health, Vol 17, Iss 1, Pp 1-11 (2017) |
| ISSN: | 1471-2458 |
| Popis: | Background Very few studies have explored the effects of age, time period, and cohort in association with biological, behavioral, economic, and environmental factors predictors on physical activity (PA) and sedentary behaviour (SB) among Chinese children. Methods We used data from a cohort study of the China Health and Nutrition Survey (CHNS) between 2004 and 2011 (2004, 2006, 2009 and 2011). The outcomes of interest were metabolic equivalent of task (MET) hours per week from both active and sedentary activities. Age, gender, individual characteristics, household size, asset ownership, and urbanisation were included as covariates. Age, period and cohort effects analyses for PA and SB of children (6–17 y, n = 3528) was conducted to explicitly assess differences in PA and SB due to age vs. period effects, and implicitly assess differences by cohorts due to the period-specific experiences across individuals of varying ages. Results The mean age of the sample in each time point fluctuated from 12.6 to 11.3 years and PA slightly decreased from 50.0 ± 63.2 MET hours per week (MET-hr./wk) in 2004 to 47.1 ± 54.9 MET-hr./wk. in 2011. However, SB increased from 31.8 ± 22.0 MET-hr./wk. to 37.6 ± 22.2 MET-hr./wk. Girls had lower PA and higher SB levels than boys. Controlling for age effects, marginal period effects on PA were observed in some survey years. Higher levels of urbanisation and number of household computers served as negative and positive predictors for PA and SB, respectively. Higher household income was a positive predictor of SB. Surprisingly, bigger household size was the only negative predictor of SB (P |
| Databáze: | OpenAIRE |
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