P T Katzmarzyk1. 1. School of Physical and Health Education, Queen's University, Kingston, ON, Canada. katzmarz@post.queensu.ca
Abstract
OBJECTIVE: To develop age- and sex-specific waist circumference reference data for Canadian youth. DESIGN: Cross-sectional population survey. SETTING: 1981 Canada Fitness Survey. SUBJECTS: Nationally representative sample of 3064 youth (1540 boys and 1524 girls) 11-18 y of age. INTERVENTIONS: Waist circumference was measured with a flexible anthropometric tape. MAIN OUTCOME MEASURES: Smoothed and weighted 5th, 10th, 25th, 50th, 75th, 90th, and 95th waist circumference percentiles derived from LMS regression. RESULTS: Waist circumference increases with age in both boys and girls, and boys have higher values of waist circumference than girls at every age and percentile level. CONCLUSIONS: These reference data can be used to identify youth with an elevated risk of developing obesity-related disorders and can serve as a baseline for future studies of temporal trends in waist circumference. SPONSORSHIP: This research was funded by the Heart and Stroke Foundation of Ontario (Grant #T4946).
OBJECTIVE: To develop age- and sex-specific waist circumference reference data for Canadian youth. DESIGN: Cross-sectional population survey. SETTING: 1981 Canada Fitness Survey. SUBJECTS: Nationally representative sample of 3064 youth (1540 boys and 1524 girls) 11-18 y of age. INTERVENTIONS: Waist circumference was measured with a flexible anthropometric tape. MAIN OUTCOME MEASURES: Smoothed and weighted 5th, 10th, 25th, 50th, 75th, 90th, and 95th waist circumference percentiles derived from LMS regression. RESULTS: Waist circumference increases with age in both boys and girls, and boys have higher values of waist circumference than girls at every age and percentile level. CONCLUSIONS: These reference data can be used to identify youth with an elevated risk of developing obesity-related disorders and can serve as a baseline for future studies of temporal trends in waist circumference. SPONSORSHIP: This research was funded by the Heart and Stroke Foundation of Ontario (Grant #T4946).
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