Structural equation model of physical activity in Turkish schoolchildren: an application of the integrated behavioural model.

Autor:	Mirzayi C; Center for Systems and Community Design, Graduate School of Public Health and Health Policy, City University of New York, New York, New York, USA., Ferris E; Center for Systems and Community Design, Graduate School of Public Health and Health Policy, City University of New York, New York, New York, USA., Ozcebe H; Department of Public Health, School of Medicine, Hacettepe University, Ankara, Turkey., Swierad E; Center for Systems and Community Design, Graduate School of Public Health and Health Policy, City University of New York, New York, New York, USA., Arslan U; Department of Public Health, School of Medicine, Hacettepe University, Ankara, Turkey., Ünlü H; Department of Public Health, School of Medicine, Hacettepe University, Ankara, Turkey., Araz O; Department of Health Promotion, College of Public Health, University of Nebraska Medical Center, Omaha, Nebraska, USA.; College of Business Administration, University of Nebraska-Lincoln, Lincoln, Nebraska, USA., Yardim MS; Department of Public Health, School of Medicine, Hacettepe University, Ankara, Turkey., Üner S; Department of Public Health, School of Medicine, Hacettepe University, Ankara, Turkey., Bilir N; Department of Public Health, School of Medicine, Hacettepe University, Ankara, Turkey., Huang TT; Center for Systems and Community Design, Graduate School of Public Health and Health Policy, City University of New York, New York, New York, USA terry.huang@sph.cuny.edu.; Department of Health Promotion, College of Public Health, University of Nebraska Medical Center, Omaha, Nebraska, USA.
Jazyk:	angličtina
Zdroj:	BMJ open [BMJ Open] 2021 Dec 13; Vol. 11 (12), pp. e046317. Date of Electronic Publication: 2021 Dec 13.
DOI:	10.1136/bmjopen-2020-046317
Abstrakt:	Objectives: Childhood obesity is increasingly prevalent in the developing world including Turkey. This study examined constructs of the integrated behavioural model associated with physical activity in a sample of schoolchildren in Ankara, Turkey using structural equation modelling. Design: Cross-sectional survey by probability sampling. Setting: Fifteen schools of different socioeconomic strata in Ankara, Turkey with grade 4 students. Participants: 2066 (969 girls and 1097 boys) grade 4 schoolchildren and their parents selected using a probability-based sampling frame. Primary Outcome Measures: Three primary outcomes were used: moderate-to-vigorous physical activity, team sport participation, sedentary behaviour. Results: Data were collected from 2066 fourth-grade children from schools of three socioeconomic strata. Missing data were imputed using multiple imputation. To examine the integrated behavioural model, a structural equation model containing latent constructs for physical activity outcome expectancies, self-efficacy, home environment and social norms were fitted with the three outcomes above. Adequate model fit was achieved in the structural equation model (χ 2 =1821.97, df=872, p<0.001, Comparative Fit Index=0.91, Tucker Lewis Index=0.91, root mean square error of approximation=0.02, standardised root mean square residual=0.04). All scale items were significantly associated with their respective latent constructs (all p<0.001). Several significant pathways between latent constructs and outcomes of interest were observed (p<0.05). Self-efficacy was positively associated with moderate-to-vigorous physical activity (p<0.001) and team sport participation (p<0.001) and negatively associated with sedentary behaviour (p<0.001). Negative outcome expectancies were negatively associated with moderate-to-vigorous physical activity (p<0.01) and sedentary behaviour (p<0.01) while positive outcome expectancies were positively associated with team sport behaviour (p<0.001) and negatively associated with sedentary behaviour (p<0.05). Home support was positively associated with moderate-to-vigorous physical activity (p<0.01) and team sport participation (p<0.05). Finally, physical activity social norms were negatively associated with sedentary behaviour only (p<0.05). Conclusions: This study supported the extension to Turkish children of the integrated behavioural model in relation to physical activity behaviours. Results illustrate multiple targets for interventions to increase physical activity. Competing Interests: Competing interests: None declared. (© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.)
Databáze:	MEDLINE
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