Psychosocial mediation of fruit and vegetable consumption in the body and soul effectiveness trial

Bernard F. Fuemmeler, Louise C. Mâsse, Amy L. Yaroch, Ken Resnicow, Marci Kramish Campbell, Carol Carr, Terry Wang, Alexis Williams

Research output: Contribution to journalArticlepeer-review

81 Scopus citations


In this study the authors examined psychosocial variables as mediators for fruit and vegetable (FV) intake in a clustered, randomized effectiveness trial conducted in African American churches. The study sample included 14 churches (8 intervention and 6 control) with 470 participants from the intervention churches and 285 participants from the control churches. The outcome of FV intake and the proposed mediators were measured at baseline and at 6-month follow-up. Structural equation modeling indicated that the intervention had direct effects on social support, self-efficacy, and autonomous motivation; these variables also had direct effects on FV intake. Applying the M. E. Sobel (1982) formula to test significant mediated effects, the authors confirmed that social support and self-efficacy were significant mediators but that autonomous motivation was not. Social support and self-efficacy partially mediated 20.9% of the total effect of the intervention on changes in FV intake. The results support the use of strategies to increase social support and self-efficacy in dietary intervention programs.

Original languageEnglish (US)
Pages (from-to)474-483
Number of pages10
JournalHealth Psychology
Issue number4
StatePublished - Jul 2006


  • African American
  • Fruits and vegetables
  • Latent variable structural equation modeling
  • Mediation analysis
  • Randomized controlled trial

ASJC Scopus subject areas

  • Applied Psychology
  • Psychiatry and Mental health


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