Disclosure: The authors have no competing interests.
Mediators of longitudinal changes in measures of adiposity in teenagers using parallel process latent growth modeling
Article first published online: 22 JUN 2013
Copyright © 2013 The Obesity Society
Volume 21, Issue 11, pages 2387–2395, November 2013
How to Cite
Yιldιrιm, M., Singh, A. S., te Velde, S. J., van Stralen, M. M., MacKinnon, D. P., Brug, J., van Mechelen, W. and Chinapaw, M. J. M. (2013), Mediators of longitudinal changes in measures of adiposity in teenagers using parallel process latent growth modeling. Obesity, 21: 2387–2395. doi: 10.1002/oby.20463
Funding agencies: The contribution of MY was funded by the World Cancer Research Fund (WCRF 2008/65). The DOiT-intervention was funded by the Netherlands Heart Foundation (NHF-2000Z002). A part of this work was also funded by the Netherlands Organization for Health Research and Development (ZonMw 121.520.002). The research visit of MY to Arizona State University to work on the data analysis with Prof. David MacKinnon was supported by the EMGO Institute Health and Care Research Travel grant.
- Issue published online: 1 NOV 2013
- Article first published online: 22 JUN 2013
- Accepted manuscript online: 21 MAR 2013 11:27AM EST
- Manuscript Accepted: 8 MAR 2013
- Manuscript Received: 12 OCT 2012
The aim of the study was to evaluate mediating effects of energy balance-related behaviors on measures of adiposity in the Dutch Obesity Intervention in Teenagers-study (DOiT).
Design and Methods
DOiT was an 8-month behavioral intervention program consisting of educational and environmental components and evaluated in 18 prevocational secondary schools in the Netherlands (n = 1,108, baseline age 12.7 years, 50% girls). Outcome measures were changes in body mass index (BMI), waist circumference, and sum of skinfold thickness. Self-reported consumption of sugar-containing beverages and high caloric snacks, active transport to/from school, and screen-viewing behaviors were the hypothesized mediators. Data were collected at 0, 8, 12, and 20 months. For the data analysis, parallel process latent growth modeling was used.
Total sugar-containing beverages consumption mediated the intervention effects on BMI (ab = −0.01, 95%CI = −0.20, −0.001). The intervention group lowered their sugar-containing beverages consumption more than controls (B = −0.14, 95%CI = −0.22, −0.11) and this, in turn, led to smaller increases in BMI. No significant mediated effect by the targeted behaviors was found for waist circumference or sum of skinfolds.
Future school-based overweight prevention interventions may target decreasing sugar-containing beverages consumption.