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Objectively Measured Physical Activity and Body Mass Index in Preschool Children

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Author(s): Susana Maria Coelho Guimarães Vale | Rute Marina Roberto Santos | Luísa Maria da Cruz Soares-Miranda | Carla Marisa Maia Moreira | Jonatan R. Ruiz | Jorge Augusto Silva Mota

Journal: International Journal of Pediatrics
ISSN 1687-9740

Volume: 2010;
Date: 2010;
Original page

ABSTRACT
Aim. To examine the association between objectively measured physical activity (PA) and body mass index (BMI) in preschool children. Methods. The study comprised 281 children (55.9% boys) aged from 4 to 6 years. PA was measured by accelerometer. Children were categorized as non-overweight (NOW) and overweight/obese (OW) according to the sex-adjusted BMI z-score (.05). Logistic regression analysis showed that children with low-vigorous PA had higher odds ratio (OR) to be classified as OW compared to those with high-vigorous PA (OR=4.4; 95% CI: 1.4–13.4; P=.008) after adjusting for BMI at first and second years of life and other potential confounders. Conclusion. The data suggests that vigorous PA may play a key role in the obesity development already at pre-school age.

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