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Joint associations between weekday and weekend physical activity or sedentary time and childhood obesity

Nan Li1, Pei Zhao1, Chengming Diao1

  • 1Tianjin Women's and Children's Health Center, Tianjin, China.

International Journal of Obesity (2005)
|February 2, 2019
PubMed

Insights

Children with low moderate-to-vigorous physical activity (MVPA) or high sedentary time on weekdays or weekends have increased odds of obesity. Maintaining MVPA and reducing sedentary behavior on both weekdays and weekends is crucial for preventing childhood obesity.

Area of Science:

  • Pediatric obesity research
  • Physical activity and sedentary behavior epidemiology
  • Global child health

Background:

  • Childhood obesity is a significant global health concern.
  • Understanding the role of physical activity and sedentary time is crucial for prevention strategies.
  • Previous research has often focused on single measures or limited timeframes.

Purpose of the Study:

  • To investigate the associations between objectively measured moderate-to-vigorous physical activity (MVPA) and sedentary time with childhood obesity.
  • To examine these associations separately for weekdays and weekend days.
  • To evaluate the combined effects of MVPA and sedentary time on obesity risk in children across diverse global populations.

Main Methods:

  • A multinational, cross-sectional study involving 5779 children aged 9-11 years from 12 countries.
  • Objective assessment of MVPA and sedentary time using waist-worn accelerometry.
  • Logistic regression analysis to determine the odds ratios (ORs) of obesity based on activity patterns.

Main Results:

  • Low MVPA on both weekdays and weekends was strongly associated with higher odds of obesity (OR 4.67).
  • High sedentary time on both weekdays and weekends was linked to increased obesity odds (OR 1.87).
  • Inconsistent MVPA levels (e.g., high on weekdays, low on weekends) also increased obesity risk.

Conclusions:

  • Reduced MVPA and increased sedentary time on either weekdays or weekend days are associated with higher odds of obesity in children.
  • These findings highlight the importance of consistent physical activity and reduced sedentary behavior throughout the week for preventing childhood obesity.
  • Interventions should consider both weekday and weekend patterns of activity and inactivity.
Abstract

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