Barriers and Facilitators of Exercise Participation Among Community-Dwelling Older Adults with Chronic Conditions: A Qualitative Study Using the COM-B Model and Theoretical Domains Framework

Background: In the context of population aging and the growing burden of chronic conditions, promoting exercise participation has become an important strategy for supporting healthy aging. However, older adults with chronic conditions often face multiple constraints related to symptom burden, risk perception, and everyday life. A theory-informed understanding of the determinants of exercise participation in this population is therefore needed. Methods: This study adopted a theory-informed qualitative descriptive design and conducted face-to-face semi-structured interviews with 30 community-dwelling older adults with chronic conditions. Purposive sampling was used to ensure variation in age, sex, chronic condition type, and exercise participation. Data were analyzed using the framework method guided by the Theoretical Domains Framework (TDF), and the resulting themes were subsequently mapped onto the Capability, Opportunity, Motivation–Behavior (COM-B) model. Results: Participants were aged 60–86 years, and most were women, had low educational attainment, came from rural backgrounds, and lived with multimorbidity. Participants described exercise participation as a day-to-day process of negotiating symptoms, risk, functional boundaries, and everyday responsibilities rather than as a simple matter of willingness. Although most participants recognized the value of exercise, many lacked disease-specific knowledge about suitable exercise types, safe intensity, progression, and warning signs. Symptom burden and functional limitations constrained exercise, but many participants used symptom-based self-regulation strategies, such as resting, slowing down, or modifying activity when discomfort occurred. Family members, peers, health professionals, and community resources could either facilitate exercise or restrict it, depending on their accessibility, continuity, specificity, and practical relevance. Continued participation was closely linked to perceived benefits, controllable risk, self-efficacy, positive emotional experience, and immediate bodily feedback. Conclusions: Exercise promotion for older adults with chronic conditions should move beyond general advice and provide disease-adapted exercise education, symptom-based self-regulation strategies, family and peer support, professional guidance, age-friendly community resources, and feedback mechanisms that support long-term maintenance.