Disclosure: The authors declared no conflict of interest.
Article first published online: 26 MAR 2013
Copyright © 2012 The Obesity Society
Volume 21, Issue 2, pages 382–385, February 2013
How to Cite
Cliff, D. P., Okely, A. D., Burrows, T. L., Jones, R. A., Morgan, P. J., Collins, C. E. and Baur, L. A. (2013), Objectively measured sedentary behavior, physical activity, and plasma lipids in overweight and obese children. Obesity, 21: 382–385. doi: 10.1002/oby.20005
Funding agencies: Data and participant recruitment were completed as part of a project funded by the National Health and Medical Research Council of Australia (354101) and this was their sole contribution to the study. Dylan Cliff is funded by a National Heart Foundation of Australia—Macquarie Postdoctoral Research Fellowship. Anthony Okely is supported by a National Heart Foundation of Australia Career Development Fellowship (CR 11S 6099). Clare Collins is funded by a National Health and Medical Research Council Career Development Award Research Fellowship (6315005).
- Issue published online: 26 MAR 2013
- Article first published online: 26 MAR 2013
- Accepted manuscript online: 7 AUG 2012 02:43PM EST
- Manuscript Accepted: 5 MAY 2012
- Manuscript Received: 7 JAN 2012
This study examines the associations between objectively measured sedentary behavior, light physical activity (LPA), and moderate-to-vigorous physical activity (MVPA), and plasma lipids in overweight and obese children.
Design and Methods:
Cross-sectional analyses were conducted among 126 children aged 5.5-9.9 years. Sedentary behavior, LPA, and MVPA were assessed using accelerometry. Fasting blood samples were analyzed for plasma lipids (high-density lipoprotein cholesterol [HDL-C], low-density lipoprotein cholesterol [LDL-C], total cholesterol [TC], and triglycerides [TG]).
MVPA was not related to plasma lipids (P > 0.05). Independent of age, sex, energy intake, and waist circumference z-score, sedentary behavior and LPA were associated with HDL-C (β = −0.23, 95% CI −0.42 to −0.04, P = 0.020; β = 0.20, 95% CI 0.14 to 0.39, P = 0.036, respectively). The strength of the associations remained after additionally adjusting for MVPA (sedentary behavior: β = −0.22, 95% CI −0.44 to 0.006, P = 0.056; LPA: β = 0.19, 95% CI −0.005 to 0.38, P = 0.056, respectively).
Substituting at least LPA for sedentary time may contribute to the development of healthy HDL-C levels among overweight and obese children, independent of their adiposity. Comprehensive prevention and treatment strategies to improve plasma HDL-C among overweight and obese children should target reductions in total sedentary time and promote the benefits of LPA, in addition to promoting healthy levels of adiposity, healthy dietary behaviors, and MVPA.