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Article

Association between Physician-Diagnosed Asthma and Weight Status among Chinese Children: The Roles of Lifestyle Factors

by 1,†, 2,†, 1, 3, 1,* and 1,*
1
Department of Maternal and Child Health, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
2
School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
3
Health Promotion Centre for Primary and Secondary Schools of Guangzhou Municipality, Guangzhou 510020, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this paper.
Int. J. Environ. Res. Public Health 2020, 17(5), 1599; https://doi.org/10.3390/ijerph17051599
Received: 7 December 2019 / Revised: 12 February 2020 / Accepted: 18 February 2020 / Published: 2 March 2020
(This article belongs to the Collection Health Behaviors, Risk Factors, NCDs and Health Promotion)
Childhood asthma and obesity have posed a parallel epidemic over the past few decades. However, whether asthma diagnosis is associated with obesity, and what the roles of lifestyle factors play in this relationship, remained unclarified. This study aimed to investigate the association between asthma and weight status in Chinese children and explore the potential mediating and/or modifying roles of lifestyle factors in the association. In this cross-sectional study, 16,837 children aged 6–12 years were recruited from Guangzhou, China. Participants’ information on physician-diagnosed asthma was collected from parents, and data on physical activity, screen time, and sleeping were reported in a validated questionnaire. Height and weight were objectively measured, and weight status was classified by body mass index (BMI). Multiple logistic regression analysis and mediation analysis were used. Results showed that asthmatic children were at significantly higher risk of obesity (odds ratio (OR) 1.51, 95% confidence interval (CI) 1.03, 2.21) compared with non-asthmatic children. More importantly, this increased risk was even greater in children with moderate-to-vigorous physical activity <60 min/d and children with screen time >2 h/d (both Pinteraction < 0.05). Also, a positive relationship of asthma with overweight was found in children with screen time >2 h/d (OR 3.92, 95% CI 1.56, 9.88), while a negative association was observed between asthma and underweight in children aged 9–12 years (OR 0.23, 95% CI 0.06, 0.92). Mediation analysis indicated that these associations were not mediated by physical activity, screen time, or sleeping. The findings suggested that physician-diagnosed asthma was associated with higher risks of overweight and obesity, and these risks might be exacerbated by insufficient physical activity and prolonged screen time. View Full-Text
Keywords: asthma; pediatric obesity; lifestyle; screen time asthma; pediatric obesity; lifestyle; screen time
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MDPI and ACS Style

Lai, L.; Zhang, T.; Zeng, X.; Tan, W.; Cai, L.; Chen, Y. Association between Physician-Diagnosed Asthma and Weight Status among Chinese Children: The Roles of Lifestyle Factors. Int. J. Environ. Res. Public Health 2020, 17, 1599. https://doi.org/10.3390/ijerph17051599

AMA Style

Lai L, Zhang T, Zeng X, Tan W, Cai L, Chen Y. Association between Physician-Diagnosed Asthma and Weight Status among Chinese Children: The Roles of Lifestyle Factors. International Journal of Environmental Research and Public Health. 2020; 17(5):1599. https://doi.org/10.3390/ijerph17051599

Chicago/Turabian Style

Lai, Lijuan, Ting Zhang, Xia Zeng, Weiqing Tan, Li Cai, and Yajun Chen. 2020. "Association between Physician-Diagnosed Asthma and Weight Status among Chinese Children: The Roles of Lifestyle Factors" International Journal of Environmental Research and Public Health 17, no. 5: 1599. https://doi.org/10.3390/ijerph17051599

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