1. Physical-activity trajectories during childhood and lung function at 15 years: findings from the ALSPAC cohort.
- Author
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Roda, Célina, Mahmoud, Osama, Peralta, Gabriela P, Fuertes, Elaine, Granell, Raquel, Serra, Ignasi, Henderson, John, Jarvis, Deborah, and Garcia-Aymerich, Judith
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TEENAGE girls , *PHYSICAL activity , *LUNGS , *MULTIVARIABLE testing , *ADULT child abuse victims , *CONFIDENCE intervals , *INTIMATE partner violence , *LUNG physiology , *PUBLIC health surveillance , *RESEARCH , *RESEARCH methodology , *RESPIRATORY measurements , *EVALUATION research , *MEDICAL cooperation , *COMPARATIVE studies , *EXERCISE , *BODY mass index , *LONGITUDINAL method - Abstract
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. [ABSTRACT FROM AUTHOR]- Published
- 2020
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