Feasibility, Acceptability, and Preliminary Effects of the Online Exercise Program PERMANENTO in Older Adults: A Randomized Controlled Trial.

Physical activity is vital for maintaining health in late life, yet many older adults remain sedentary. This study evaluated the feasibility and acceptability of a home-based online exercise and education program inspired by developmental kinesiology and explored its preliminary effects on objective and perceived functional fitness. A total of 82 community-dwelling adults aged 70+ (mean age 73.7 ± 3.4 years; 77% female) were randomized into intervention (n = 45) and control (n = 37) groups. The intervention group completed a 12-week program (15 min daily, at least 6 days a week). Adherence was tracked via diaries, and acceptability was assessed using a custom-designed questionnaire. Functional fitness was measured through performance tests (Timed Up and Go Test, Single-Leg Stance Test, Handgrip) and a single-item self-assessment. Data were analyzed using descriptive and inferential statistics, including generalized linear models controlling for key covariates in SPSS 24. The intervention group achieved 100% retention and adherence. Participants rated the program as clear, meaningful, and manageable, all would recommend it to family and friends, and 91% expressed willingness to continue. Significant improvements were observed in perceived functional fitness (B = -1.098, p < .05) with a moderate within-group effect size (d = 0.59) in the intervention group. Older adults are able to successfully engage in home-based online programs and thus improve perceived functional fitness. These findings suggest promising potential for long-term adherence and sustainability. Future studies should explore lifestyle changes associated with improved perception of functional capacity. Trial Registration: ClinicalTrials.gov #NCT06133894.