TY - JOUR
T1 - Moderate-to-vigorous physical activity and sedentary behavior
T2 - Independent associations with body composition variables in Brazilian children
AU - De Moraes Ferrari, Gerson Luis
AU - Oliveira, Luis Carlos
AU - Araujo, Timoteo Leandro
AU - Matsudo, Victor
AU - Barreira, Tiago V.
AU - Tudor-Locke, Catrine
AU - Katzmarzyk, Peter
N1 - Publisher Copyright:
© 2015 Human Kinetics, Inc.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - This study aimed to analyze the independent associations of accelerometer-determined sedentary behavior, physical activity, and steps/day with body composition variables in Brazilian children. 485 children wore accelerometers for 7 days. Variables included time in sedentary behavior and different physical activity intensities (light, moderate, vigorous, or moderate-to-vigorous) and steps/day. Body fat percentage was measured using a bioelectrical impedance scale, and BMI was calculated. Children spent 55.7% of the awake portion of the day in sedentary behavior, 37.6% in light physical activity, 4.6% in moderate physical activity, and 1.9% in vigorous physical activity. Moderate-to-vigorous physical activity and steps/day were negatively associated with body composition (BMI and body fat percentage) variables, independent of sex and sedentary behavior. Beta values were higher for vigorous physical activity than moderate physical activity. Vigorous physical activity was negatively associated with BMI (β-.1425) and body fat percentage (β-.3082; p < .0001). In boys, there were significant negative associations between moderate, vigorous, and moderate-to-vigorous physical activity and steps/day with body composition, and in girls, there was only a negative association with vigorous physical activity, independent of sedentary behavior. Moderate-to-vigorous physical activity and steps/day (in boys), but especially vigorous physical activity (in boys and girls), are associated with body composition, independent of sedentary behavior. Sedentary behavior was not related with any of the body composition variables once adjusted for moderate-to-vigorous physical activity.
AB - This study aimed to analyze the independent associations of accelerometer-determined sedentary behavior, physical activity, and steps/day with body composition variables in Brazilian children. 485 children wore accelerometers for 7 days. Variables included time in sedentary behavior and different physical activity intensities (light, moderate, vigorous, or moderate-to-vigorous) and steps/day. Body fat percentage was measured using a bioelectrical impedance scale, and BMI was calculated. Children spent 55.7% of the awake portion of the day in sedentary behavior, 37.6% in light physical activity, 4.6% in moderate physical activity, and 1.9% in vigorous physical activity. Moderate-to-vigorous physical activity and steps/day were negatively associated with body composition (BMI and body fat percentage) variables, independent of sex and sedentary behavior. Beta values were higher for vigorous physical activity than moderate physical activity. Vigorous physical activity was negatively associated with BMI (β-.1425) and body fat percentage (β-.3082; p < .0001). In boys, there were significant negative associations between moderate, vigorous, and moderate-to-vigorous physical activity and steps/day with body composition, and in girls, there was only a negative association with vigorous physical activity, independent of sedentary behavior. Moderate-to-vigorous physical activity and steps/day (in boys), but especially vigorous physical activity (in boys and girls), are associated with body composition, independent of sedentary behavior. Sedentary behavior was not related with any of the body composition variables once adjusted for moderate-to-vigorous physical activity.
KW - Accelerometer
KW - Anthropometric
KW - Bioelectric impedance
KW - Children
KW - Physical activity
KW - Sedentary behavior
UR - http://www.scopus.com/inward/record.url?scp=84941001364&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84941001364&partnerID=8YFLogxK
U2 - 10.1123/pes.2014-0150
DO - 10.1123/pes.2014-0150
M3 - Article
C2 - 25902556
AN - SCOPUS:84941001364
SN - 0899-8493
VL - 27
SP - 380
EP - 389
JO - Pediatric exercise science
JF - Pediatric exercise science
IS - 3
ER -