Human development and variability in accelerometry-derived physical activity metrics in children

Mini-Oral Presentation C1.7

Authors

  • Peter Katzmarzyk Pennington Biomedical Research Center
  • Stephanie T. Broyles Pennington Biomedical Research Center
  • Jean-Philippe Chaput Children's Hospital of Eastern Ontario Research Institute
  • Mikael Fogelholm University of Helsinki
  • Gang Hu Pennington Biomedical Research Center
  • Estelle V. Lambert University of Cape Town
  • Carol Maher University of South Australia
  • Jose A. R. Maia University of Porto
  • Tim Olds University of South Australia
  • Vincent Onywera Kenyatta University
  • Olga L. Sarmiento Universidad de los Andes
  • Martyn Standage University of Bath
  • Mark S. Tremblay Children's Hospital of Eastern Ontario Research Institute; University of Ottawa
  • Catrine Tudor-Locke University of North Carolina

DOI:

https://doi.org/10.14288/hfjc.v14i3.743

Keywords:

Accelerometry, Human Development, Variability

Abstract

Background: There is a pressing need to develop interventions to increase physical activity and decrease sedentary behaviour in school-aged children. Yet, a better understanding of the degree to which these interventions might be translated across countries at different levels of human development is required. Purpose: To examine the association between levels of human development and sources of variability in accelerometry-derived measures of moderate-to-vigorous physical activity (MVPA) and sedentary time (ST) in 6022 children aged 9–11 years from 12 countries ranging widely in environmental and socio-cultural contexts. Methods: The study design involved recruitment of students, nested within schools, which were nested within study sites. Total and in-school MVPA and ST were measured by waist-worn accelerometry (Actigraph GT3X+). The Human Development Index (HDI) for each country was obtained from the United Nations Development Programme. Results: Associations among the study variables were examined via multi-level models. Across all study sites, the variance in total MVPA and ST explained at the individual level (50.1% to 97.1%) was greater than the variance explained at the school level (2.9% to 49.9%). Similarly, the variance in in-school MVPA and ST explained at the individual level (28.4% to 95.4%) was higher than the proportion of the variance explained at the school level (4.6% to 71.6%). There were negative correlations between HDI and the variance explained by schools for total MVPA (-0.74; p<0.05), total ST (r=-0.55; p=0.06), in-school MVPA (-0.58; p=0.05), and in-school ST (-0.34; p=0.28). Conclusions: The results indicate that higher levels of human development are associated with lower explained variance in total and in-school levels of MVPA and ST. Such findings suggest that school-based physical activity and sedentary behaviour interventions may be less effective in countries with higher levels of human development, and that individual-level interventions may be more effective in these settings. Funding: This study was funded by The Coca-Cola Company. With the exception of requiring that the study be global in nature, the funder had no role in the conduct of the study or interpretation of data.

Published

2021-09-30

How to Cite

Katzmarzyk, P., Broyles, S., Chaput, J.-P., Fogelholm, M., Hu, G., Lambert, E., Maher, C., Maia, J., Olds, T., Onywera, V., Sarmiento, O., Standage, M., Tremblay, M., & Tudor-Locke, C. (2021). Human development and variability in accelerometry-derived physical activity metrics in children: Mini-Oral Presentation C1.7. The Health & Fitness Journal of Canada, 14(3). https://doi.org/10.14288/hfjc.v14i3.743

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