Deakin University
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Age-related patterns of vigorous-intensity physical activity in youth: the International Children's Accelerometry Database

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Version 2 2024-06-06, 09:32
Version 1 2016-10-21, 09:52
journal contribution
posted on 2024-06-06, 09:32 authored by K Corder, SJ Sharp, AJ Atkin, LB Andersen, G Cardon, A Page, R Davey, A Grøntved, PC Hallal, KF Janz, K Kordas, S Kriemler, JJ Puder, LB Sardinha, U Ekelund, EMF van Sluijs, International Children's Accelerometry Database (ICAD) Collaborators
Physical 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.



Preventive medicine reports






Amsterdam, The Netherlands

Open access

  • Yes





Publication classification

C Journal article, C1.1 Refereed article in a scholarly journal

Copyright notice

2016, The Authors


Salmon J, Timperio A