"Is there nothing more practical than a good theory?": Why innovations and advances in health behavior change will arise if interventions are used to test and refine theory.
Int J Behav Nutr Phys Act. 2004 Jul 27;1(1):11. doi: 10.1186/1479-5868-1-11. Int J Behav Nutr Phys Act. 2004. PMID: 15279674 Free PMC article.