Effects of individual components of multiple behavior changes: The PREMIER trial

Eva Obarzanek, William M. Vollmer, Pao Hwa Lin, Lawton S. Cooper, Deborah R. Young, Jamy D. Ard, Victor J. Stevens, Denise G. Simons-Morton, Laura P. Svetkey, David W. Harsha, Patricia J. Elmer, Lawrence Appel

Research output: Contribution to journalArticle


Objectives: To assess contributions of individual lifestyle changes on systolic blood pressure (SBP) changes. Methods: We examined associations between lifestyle behavior changes and SBP after 6 and 18 months in 782 PREMIER trial participants. Results: In multivariate models omitting weight, predicted SBP reductions ranged from 1/2 to 1 1/2 mm Hg for reduced urinary sodium, improved fitness, and adherence to the DASH diet (except sodium at 18 months). With weight included, only fitness change additionally predicted SBP at 18 months. Conclusions: Several lifestyle behavior changes are important for BP lowering, but are difficult to detect when weight is included in multivariate models.

Original languageEnglish (US)
Pages (from-to)545-560
Number of pages16
JournalAmerican Journal of Health Behavior
Issue number5
StatePublished - Sep 2007



  • Blood pressure
  • Fitness
  • Lifestyle
  • Nutrition
  • Physical activity

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Leadership and Management

Cite this

Obarzanek, E., Vollmer, W. M., Lin, P. H., Cooper, L. S., Young, D. R., Ard, J. D., Stevens, V. J., Simons-Morton, D. G., Svetkey, L. P., Harsha, D. W., Elmer, P. J., & Appel, L. (2007). Effects of individual components of multiple behavior changes: The PREMIER trial. American Journal of Health Behavior, 31(5), 545-560.