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Association between sedentary behavior, physical activity, and obesity: inactivity among active kids
Suzy L Wong1, Scott T Leatherdale
1University of Waterloo, Waterloo, Ontario, Canada.
Preventing Chronic Disease
|December 17, 2008
Summary
High levels of sedentary behavior increase overweight risk in adolescents, regardless of physical activity levels. Understanding this relationship is key for youth weight management interventions.
Area of Science:
- Adolescent Health
- Obesity Research
- Behavioral Science
Background:
- Sedentary behavior and physical activity are distinct but can coexist.
- The combined impact of high physical activity and high sedentary behavior on adolescent overweight risk is not well understood.
- Clarifying these relationships is crucial for developing effective weight management strategies.
Purpose of the Study:
- To investigate the association between different levels of physical activity and sedentary behavior with body mass index (BMI) in adolescents.
- To examine how combinations of activity and inactivity influence overweight risk in high school students.
Main Methods:
- Utilized data from 25,060 students (grades 9-12) across 76 Ontario secondary schools via the SHAPES physical activity module.
- Employed sex-specific logistic regression to analyze associations between BMI and behavioral patterns (high active-high sedentary, low active-low sedentary, low active-high sedentary).
- Considered factors like weight perception, social influences, team sports, and smoking behavior.
Main Results:
- Low active-high sedentary boys showed a significantly higher likelihood of being overweight compared to high active-low sedentary boys (AOR 1.60).
- For girls, both low active-high sedentary (OR 2.24) and high active-high sedentary (OR 1.91) groups were more likely to be overweight than their high active-low sedentary counterparts.
- These findings highlight distinct risks associated with sedentary behavior patterns in both sexes.
Conclusions:
- Sedentary behavior appears to moderate the link between physical activity and overweight status in adolescents.
- Further research into the interplay of sedentary behavior, physical activity, and overweight is essential for targeted youth interventions.
- Understanding these complex behaviors is critical for public health initiatives aimed at reducing adolescent obesity.
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