Age-related patterns of vigorous-intensity physical activity in youth: The International Children's Accelerometry Database.

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dc.creatorCorder, Kirsten
dc.creatorSharp, Stephen J
dc.creatorAtkin, Andrew J
dc.creatorAndersen, Lars B
dc.creatorCardon, Greet
dc.creatorPage, Angie
dc.creatorDavey, Rachel
dc.creatorGrøntved, Anders
dc.creatorHallal, Pedro C
dc.creatorJanz, Kathleen F
dc.creatorKordas, Katarzyna
dc.creatorKriemler, Susi
dc.creatorPuder, Jardena J
dc.creatorSardinha, Luis B
dc.creatorEkelund, Ulf
dc.creatorvan Sluijs, Esther MF
dc.creatorInternational Children's Accelerometry Database (ICAD) Collaborators
dc.date2016-06-13T14:49:49Z
dc.date2016-06-13T14:49:49Z
dc.date2016-12
dc.date.accessioned2026-08-03T01:48:13Z
dc.descriptionPhysical activity declines during youth but most evidence reports on combined moderate and vigorous-intensity physical activity. We investigated how vigorous-intensity activity varies with age. Cross-sectional data from 24,025 participants (5.0-18.0 y; from 20 studies in 10 countries obtained 2008-2010) providing ≥ 1 day accelerometer data (International Children's Accelerometry Database (ICAD)). Linear regression was used to investigate age-related patterns in vigorous-intensity activity; models included age (exposure), adjustments for monitor wear-time and study. Moderate-intensity activity was examined for comparison. Interactions were used to investigate whether the age/vigorous-activity association differed by sex, weight status, ethnicity, maternal education and region. A 6.9% (95% CI 6.2, 7.5) relative reduction in mean vigorous-intensity activity with every year of age was observed; for moderate activity the relative reduction was 6.0% (5.6%, 6.4%). The age-related decrease in vigorous-intensity activity remained after adjustment for moderate activity. A larger age-related decrease in vigorous activity was observed for girls (- 10.7%) versus boys (- 2.9%), non-white (- 12.9% to - 9.4%) versus white individuals (- 6.1%), lowest maternal education (high school (- 2.0%)) versus college/university (ns) and for overweight/obese (- 6.1%) versus healthy-weight participants (- 8.1%). In addition to larger annual decreases in vigorous-intensity activity, overweight/obese individuals, girls and North Americans had comparatively lower average vigorous-intensity activity at 5.0-5.9 y. Age-related declines in vigorous-intensity activity during youth appear relatively greater than those of moderate activity. However, due to a higher baseline, absolute moderate-intensity activity decreases more than vigorous. Overweight/obese individuals, girls, and North Americans appear especially in need of vigorous-intensity activity promotion due to low levels at 5.0-5.9 y and larger negative annual differences.
dc.descriptionThis is the final published version. It first appeared at http://www.sciencedirect.com/science/article/pii/S2211335516300365.
dc.formatapplication/pdf
dc.identifier2211-3355
dc.identifierhttps://www.repository.cam.ac.uk/handle/1810/256287
dc.identifier10.17863/CAM.228
dc.identifier2211-3355
dc.identifier.urihttps://repo.dare.co.zw/handle/123456789/159741
dc.languageEnglish
dc.languageeng
dc.publisherElsevier
dc.publisherhttps://doi.org/10.1016/j.pmedr.2016.05.006
dc.rightsAttribution 4.0 International
dc.rightshttps://creativecommons.org/licenses/by/4.0/
dc.subjectAdolescent
dc.subjectChild
dc.subjectEpidemiology
dc.subjectICAD
dc.subjectMotor activity
dc.titleAge-related patterns of vigorous-intensity physical activity in youth: The International Children's Accelerometry Database.
dc.typeArticle

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