@misc{10481/28993,
year = {2013},
url = {http://hdl.handle.net/10481/28993},
abstract = {Objectives

To examine the independent and combined association of physical activity (PA) and sedentary behavior (SB) on both systolic (SBP) and diastolic blood pressure (DBP) in adolescents from two observational studies.

Methods

Participants from two cross-sectional studies, one conducted in Europe (n = 3,308; HELENA study) and the other in Brazil (n = 991; BRACAH study), were selected by complex sampling. Systolic and diastolic blood pressure (outcomes), PA and SB, both independently and combined, and potential confounders were analyzed. Associations were examined by multilevel linear regression.

Results

Performing the recommended amount of PA (≥60 min/d) attenuated the effect of SB on DBP in BRACAH study girls and in boys from both studies. In contrast, PA did not attenuate the effects of SB on the SBP of girls in the HELENA study. The combination of less than recommended levels of PA with 2–4 h/d of sedentary behavior was found to be associated with increased SBP in boys from both studies.

Conclusions

Meeting current PA recommendations could mediate the association between SB and DBP in both sexes. In boys, the joint effect of low levels of PA and excessive sedentary activity increases SBP levels. Longitudinal studies are required to confirm these findings.},
organization = {The HELENA Study takes place with the financial support of the European Community Sixth RTD Framework Programme (contract FOOD-CT-2005-007034).},
publisher = {Public Library of Science (PLOS)},
keywords = {Adolescent},
keywords = {Behavior},
keywords = {Hypertension},
keywords = {Blood presure},
keywords = {Accelerometers},
keywords = {Cross-sectional study},
keywords = {Health},
title = {Independent and combined effects of physical activity and sedentary behavior on blood pressure in adolescents: gender differences in two cross-sectional studies},
author = {Ferreira de Moraes, A. C. and Barbosa Carvalho, H. and Rey-López, Juan P. and Gracia Marco, Luis Andrés and Beghin, Laurent and Kafatos, A. and Jiménez Pavón, David and Molnar, Dénes and Henauw, Stefaan de and Manios, Yannis and Widhalm, Kurt and Ruiz Ruiz, Jonatan and Ortega Porcel, Francisco Bartolomé and Sjöström, Michael and Polito, Ángela and Pedrero-Chamizo, R. and Marcos, Ascensión and Gottrand, Frederic and Moreno, L. A.},
}