Mediator analysis of Moms on the Move

Nancy L. Fahrenwald, Jan R. Atwood, David R. Johnson

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


This study examined whether improvements in physical activity discovered in a test of Moms on the Move were mediated by the behavioral constructs from which the intervention was derived. Identifying mediator variables is vital for intervention planning. The intervention was derived from the Transtheoretical Model (TTM) of behavior change and promoted moderately intense activities like walking. Sedentary mothers with children enrolled in the Women, Infants, and Children program (N = 44) were randomly assigned to the experimental intervention or attention control. Large effect sizes were reported for improvements in physical activity and changes in TTM constructs. This study examined whether the physical activity improvements were mediated by the behavioral constructs. Statistical analyses used bivariate correlation coefficients and two-stage multiple linear regression. These exploratory findings did not support the hypothesis that increased physical activity, which was associated with the experimental intervention, was mediated by the TTM constructs.

Original languageEnglish (US)
Pages (from-to)271-291
Number of pages21
JournalWestern Journal of Nursing Research
Issue number3
StatePublished - Apr 2005

All Science Journal Classification (ASJC) codes

  • General Nursing


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