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Physical-activity trajectories during childhood and lung function at 15 years: findings from the ALSPAC cohort.

Roda, Célina and Mahmoud, Osama and Peralta, Gabriela P and Fuertes, Elaine and Granell, Raquel and Serra, Ignasi and Henderson, John and Jarvis, Deborah and Garcia-Aymerich, Judith (2020) 'Physical-activity trajectories during childhood and lung function at 15 years: findings from the ALSPAC cohort.' International Journal of Epidemiology, 49 (1). 131 - 141. ISSN 0300-5771

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BACKGROUND:Although physical activity has many known health benefits, its association with lung function in childhood/adolescence remains unclear. We examined the association of physical-activity trajectories between 11 and 15 years with lung function at 15 years in 2266 adolescents. METHODS:A population-based cohort of 14 305 singleton births alive at 1 year was recruited in the UK population-based Avon Longitudinal Study of Parents and Children cohort. Physical activity (counts/minute and moderate-to-vigorous physical activity) was assessed for 7 days using an accelerometer at 11, 13 and 15 years. We identified sex-specific physical-activity trajectories applying K-means for longitudinal data in children with at least two accelerometer measurements (n = 3584). We then estimated the sex-specific associations of these trajectories with post-bronchodilation lung-function parameters using multivariable linear-regression models (n = 2266, 45% boys). RESULTS:Fewer than 7% of participants met the WHO physical-activity recommendations (i.e. daily average of at least 60 minutes of moderate-to-vigorous physical activity). Boys were substantially more active than girls. In both sexes, we identified three distinct physical-activity trajectories ('low': 39.8% boys, 45.8% girls; 'moderate': 42.9% boys, 41.4% girls; and 'high' physical activity: 17.3% boys, 12.8% girls). Girls in the moderate and high physical-activity trajectories had 0.11 L [95% confidence interval (CI): 0.04-0.19] and 0.15 L (95% CI: 0.03-0.26) higher forced vital capacity than their less-active peers. No association was observed in boys. CONCLUSIONS:Higher childhood physical activity relates to higher lung-function levels in adolescent girls. A better understanding of the mechanisms underlying this association should be pursued.

Item Type: Article
Uncontrolled Keywords: Lung, Humans, Vital Capacity, Body Mass Index, Exercise, Population Surveillance, Cohort Studies, Longitudinal Studies, Adolescent, Child, Female, Male
Divisions: Faculty of Science and Health > Mathematical Sciences, Department of
Depositing User: Elements
Date Deposited: 14 Jan 2021 14:57
Last Modified: 14 Jan 2021 15:15

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