Physical activity and sedentary behavior in obese youth

Area of Science:

• Pediatric Obesity Research
• Physical Activity and Sedentary Behavior

Background:

• Understanding physical activity and sedentary behavior patterns in obese children is crucial for effective weight management.
• Directly measured data from clinical populations are needed to compare with national samples.

Purpose of the Study:

• To compare physical activity and sedentary behavior patterns of obese children in a weight-management clinic with national samples.
• To identify differences between clinical obese, community obese, and normal-weight children.

Main Methods:

• Cross-sectional study comparing 56 obese children (8-18 years) from a weight-management clinic with national samples from the Canadian Health Measures Survey (CHMS).
• CHMS included obese (BMI >95th percentile, n=143) and normal-weight (BMI <85th percentile, n=958) children.
• Directly measured physical activity (moderate-to-vigorous and light) and sedentary behavior were assessed.

Main Results:

• Obese boys in the clinic and obese boys in the CHMS had similar moderate-to-vigorous physical activity (MVPA) levels, both lower than normal-weight boys.
• Obese boys accrued fewer days with 60 or 30 minutes of MVPA compared to normal-weight boys.
• No significant differences in daily MVPA were found among girls across groups. Light activity was lower in clinical boys and girls compared to normal-weight CHMS boys. Sedentary behavior did not differ between groups.

Conclusions:

• Obese children, whether clinically treated or in the community, are not more sedentary than their normal-weight peers.
• Overall MVPA levels are low across all groups, including normal-weight children.
• Health professionals should target both physical activity and sedentary behavior interventions for all children, not exclusively those with obesity.