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

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.

Mothers’ Diet and Family Income Predict Daughters’ Healthy Eating

“…Potential correlates of daughters' healthy eating scores were selected a priori to test their association with HEI scores on the basis of previous associations reported in the literature (6). Correlates included mothers' self-reported diet, physical activity, family relationship scores, and fathers' physical activity.…”

“…Diet and physical activity can promote adult health and are 2 modifiable lifestyle behaviors in youth that parents can influence (6). Social influences at mealtime affect both food quantity and preference.…”

“…However, research on parental influence has yielded mixed results. Some studies show that parents' diet and physical activity are coconnected and are linked to and promote the health of their children (6,19). Other studies do not show this effect (20).…”

“…Consequently, a current focus is on how early lifestyle modifications (in adolescence) may reduce a woman’s risk of breast cancer later in life ( 4 ). Although family history is not modifiable ( 5 ), lifestyle behaviors such as physical activity and diet can be changed to reduce the risk of diseases such as breast cancer ( 6 , 7 ). Evidence supports an inverse relationship between physical activity and breast cancer and a positive relationship between obesity and breast cancer ( 8 ).…”

Ψυχοκοινωνικοί Παράγοντες Και Φυσική Δραστηριότητα Σε Γυναίκες Που Έχουν Νοσήσει Από Καρκίνο Στο Μαστό

“…μητέρα ή αδελφή. Έχει φανεί ότι γυναίκες οι οποίες έχουν συγγενή πρώτου βαθμού ο οποίος έχει νοσήσει, εμφανίζουν διπλάσιες πιθανότητες ανάπτυξης καρκίνου του μαστού (Coughlin, Khoury, & Steinberg, 1999;Marinac, Dunsiger, Marcus, Rosen, Gans, & Hartman, 2018;Tehranifar, Wu, Shriver, Cloud, & Terry, 2015). Ο κίνδυνος επιταχύνεται περαιτέρω εάν υπάρχει νόσος σε δύο ή περισσότερους συγγενείς και επίσης εάν ο καρκίνος σε αυτούς τους συγγενείς έχει διαγνωστεί κάτω από την ηλικία των 50 ετών ( Mehrgou & Akouchekian, 2016;Pharoah, Day, Duffy, Easton, & Ponder, 1997).…”