RESUMEN
OBJECTIVES: To examine the factors influencing health-promoting lifestyles and the changes in health behavior self-efficacy and health-promoting lifestyles among female breast cancer survivors over a 6-month period. METHODS: A longitudinal design with purposive sampling was deployed. Data collection occurred at the baseline (T1), 3 months (T2), and 6 months (T3). In total, 53 breast cancer survivors agreed to participate. All participants completed the first two rounds of data collection, 49 participants completed data collection at the 6-month mark (T3). The Chinese versions of the Self-Rated Abilities for Health Practices Scale (SRAHP) and the Health-Promoting Lifestyle Profile (HPLP) were used. RESULTS: Health behavior self-efficacy and health-promoting lifestyle scores increased over time. Age, impaired cardiac function, those taking a career break, psychological well-being, and responsible health practice in self-efficacy for health behaviors were significant predictors of health-promoting lifestyle. CONCLUSIONS: Younger breast cancer survivors, those taking a career break, and those with poor health behavior self-efficacy were less likely to engage in a health-promoting lifestyle and may require guidance in improving overall health behaviors. IMPLICATIONS FOR NURSING PRACTICE: Healthcare providers should not only be aware of the suboptimal health promotion lifestyle in breast cancer survivors but also focus on enhancing health behavior self-efficacy. This is particularly crucial for younger breast cancer survivors or those currently unemployed.