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

Corder, Kirsten, Sharp, Stephen J., Atkin, Andrew J., Andersen, Lars B., Cardon, Greet, Page, Angie, Davey, Rachel, Grøntved, Anders, Hallal, Pedro C., Janz, Kathleen F., Kordas, Katarzyna, Kriemler, Susi, Puder, Jardena J., Sardinha, Luis B., Ekelund, Ulf, van Sluijs, Esther M. F., Salmon, Jo, Timperio, Anna and International Children's Accelerometry Database (ICAD) Collaborators 2016, Age-related patterns of vigorous-intensity physical activity in youth: the International Children's Accelerometry Database, Preventive medicine reports, vol. 4, pp. 17-22, doi: 10.1016/j.pmedr.2016.05.006.

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Title Age-related patterns of vigorous-intensity physical activity in youth: the International Children's Accelerometry Database
Author(s) Corder, Kirsten
Sharp, Stephen J.
Atkin, Andrew J.
Andersen, Lars B.
Cardon, Greet
Page, Angie
Davey, Rachel
Grøntved, Anders
Hallal, Pedro C.
Janz, Kathleen F.
Kordas, Katarzyna
Kriemler, Susi
Puder, Jardena J.
Sardinha, Luis B.
Ekelund, Ulf
van Sluijs, Esther M. F.
Salmon, JoORCID iD for Salmon, Jo orcid.org/0000-0002-4734-6354
Timperio, AnnaORCID iD for Timperio, Anna orcid.org/0000-0002-8773-5012
International Children's Accelerometry Database (ICAD) Collaborators
Journal name Preventive medicine reports
Volume number 4
Start page 17
End page 22
Total pages 6
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2016-12
ISSN 2211-3355
Keyword(s) ICAD
motor activity
child
adolescent
epidemiology
Summary 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.
Language eng
DOI 10.1016/j.pmedr.2016.05.006
Copyright notice ©2016, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30088134

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.