TY - JOUR
T1 - Randomized Trial of a Lifestyle Physical Activity Intervention for Breast Cancer Survivors
T2 - Effects on Transtheoretical Model Variables
AU - Scruggs, Stacie
AU - Mama, Scherezade Kelly
AU - Carmack, Cindy L.
AU - Douglas, Tommy
AU - Diamond, Pamela
AU - Basen-Engquist, Karen
N1 - Publisher Copyright:
© 2017, © 2017 Society for Public Health Education.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - This study examined whether a physical activity intervention affects transtheoretical model (TTM) variables that facilitate exercise adoption in breast cancer survivors. Sixty sedentary breast cancer survivors were randomized to a 6-month lifestyle physical activity intervention or standard care. TTM variables that have been shown to facilitate exercise adoption and progress through the stages of change, including self-efficacy, decisional balance, and processes of change, were measured at baseline, 3 months, and 6 months. Differences in TTM variables between groups were tested using repeated measures analysis of variance. The intervention group had significantly higher self-efficacy (F = 9.55, p =.003) and perceived significantly fewer cons of exercise (F = 5.416, p =.025) at 3 and 6 months compared with the standard care group. Self-liberation, counterconditioning, and reinforcement management processes of change increased significantly from baseline to 6 months in the intervention group, and self-efficacy and reinforcement management were significantly associated with improvement in stage of change. The stage-based physical activity intervention increased use of select processes of change, improved self-efficacy, decreased perceptions of the cons of exercise, and helped participants advance in stage of change. These results point to the importance of using a theory-based approach in interventions to increase physical activity in cancer survivors.
AB - This study examined whether a physical activity intervention affects transtheoretical model (TTM) variables that facilitate exercise adoption in breast cancer survivors. Sixty sedentary breast cancer survivors were randomized to a 6-month lifestyle physical activity intervention or standard care. TTM variables that have been shown to facilitate exercise adoption and progress through the stages of change, including self-efficacy, decisional balance, and processes of change, were measured at baseline, 3 months, and 6 months. Differences in TTM variables between groups were tested using repeated measures analysis of variance. The intervention group had significantly higher self-efficacy (F = 9.55, p =.003) and perceived significantly fewer cons of exercise (F = 5.416, p =.025) at 3 and 6 months compared with the standard care group. Self-liberation, counterconditioning, and reinforcement management processes of change increased significantly from baseline to 6 months in the intervention group, and self-efficacy and reinforcement management were significantly associated with improvement in stage of change. The stage-based physical activity intervention increased use of select processes of change, improved self-efficacy, decreased perceptions of the cons of exercise, and helped participants advance in stage of change. These results point to the importance of using a theory-based approach in interventions to increase physical activity in cancer survivors.
KW - behavior change
KW - breast cancer
KW - cancer
KW - oncology
KW - physical activity
KW - survivorship
KW - transtheoretical model
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UR - http://www.scopus.com/inward/citedby.url?scp=85040076609&partnerID=8YFLogxK
U2 - 10.1177/1524839917709781
DO - 10.1177/1524839917709781
M3 - Article
C2 - 28627254
AN - SCOPUS:85040076609
SN - 1524-8399
VL - 19
SP - 134
EP - 144
JO - Health Promotion Practice
JF - Health Promotion Practice
IS - 1
ER -