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Mediators of a physical activity intervention among women with a family history of breast cancer

Marinac, Catherine R. et al.

Women & health. Volume 58:Number 6 (2018, July 3rd); pp 699-713 -- Taylor & Francis

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  • Title:
    Mediators of a physical activity intervention among women with a family history of breast cancer
  • Author: Marinac, Catherine R.;
    Dunsiger, Shira I.;
    Marcus, Bess H.;
    Rosen, Rochelle K.;
    Gans, Kim M.;
    Hartman, Sheri J.
  • Found In: Women & health. Volume 58:Number 6 (2018, July 3rd); pp 699-713
  • Journal Title: Women & health
  • Subjects: Gynecology--Periodicals; Women in medicine--Periodicals; Women's health services--Periodicals; Women--Health and hygiene--Periodicals; Women--Health and hygiene--United States--Periodicals; Behavioral science--exercise--intervention study--mediation analyses; Dewey: 613.0424405
  • Rights: Licensed
  • Publication Details: Taylor & Francis
  • Abstract: ABSTRACT:

    The current study examined mediators of an efficacious physical activity intervention. Women with a mean age of 42.6 (range 23–61) years and a family history of breast cancer were randomized to either an Internet-based physical activity intervention (n = 28) or an active control condition (n = 27) for three months. Data were collected between November 2010 and August 2011. Hypothesized mediators were examined using a product of coefficients model with bootstrapped standard errors. Significant mediation was observed for both self-efficacy and behavioral processes. Specifically, the regression coefficients of the indirect effects ("ab path": unstandardized effect of the intervention on physical activity that occurred through the mediator) were ab = 38.58 (95% confidence interval [CI]: 8.66–92.76) for self-efficacy, and ab = 42.02 (95% CI: 6.76–104.84) for behavioral processes. Other factors examined in this study, including cognitive processes, decisional balance, and perceived risk of breast cancer, were not statistically significant mediators. Findings suggest that self-efficacy and behavioral processes may be key constructs to use in targeting future physical activity interventions among women with a family history of breast cancer.


  • Identifier: System Number: ETOCvdc_100068123946.0x000001; Journal ISSN: 0363-0242; 10.1080/03630242.2017.1333075
  • Publication Date: 2018
  • Physical Description: Electronic
  • Shelfmark(s): 9343.260000
  • UIN: ETOCvdc_100068123946.0x000001

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