
BMC Medicine, Journal Year: 2024, Volume and Issue: 22(1)
Published: Dec. 23, 2024
Abstract Background Despite an urgent need for multi-domain lifestyle interventions to reduce dementia risk, there is a lack of which are informed by theory- and evidence-based behaviour change strategies, no in this domain have investigated the feasibility or effectiveness maintenance. We tested feasibility, acceptability cognitive effects personalised theory-based 24-week intervention improve Mediterranean diet (MD) adherence alone, combination with physical activity (PA), older-adults at risk dementia, defined using cardiovascular score. Methods Participants ( n = 104, 74% female, 57–76 years) were randomised three parallel arms: (1) control, (2) MD, (3) MD + PA 24 weeks invited optional follow-up period active intervention. Behaviour was supported targets, web-based intervention, group sessions food provision. The primary outcome (MD levels), secondary outcomes included acceptability, function, cardiometabolic health (BMI 24-h ambulatory blood pressure) process measures. Results feasible acceptable intended number participants completing study. Participant engagement provision components high. There improved two groups compared control (3.7 points on 14-point scale (95% CI 2.9, 4.5) 48 (2.7 1.6, 3.7)). did not significantly objectively measured PA. Improvements general cognition (0.22 0.05, 0.35), memory (0.31 0.10, 0.51) select captured as underpinning physiological mechanisms observed weeks. Conclusions successful initiating maintaining dietary up 12 months resulted benefits. It provides framework future complex range well-being endpoints. Trial registration ClinicalTrials.gov NCT03673722.
Language: Английский