Lifestyle, Exercise and Diet: The LEAD Study

All participants will engage in group supervised exercise sessions once per week as well as engage in additional exercise sessions at home 4 days/week. The exercise program will be run out of two sites (Toronto Rehabilitation Institute (TRI) - Rumsey Centre in Toronto, and the Centre for Community, Clinical Applied Research Excellence (CCCARE) at the University of Waterloo). The supervised exercise sessions modeled after the standard TRI Cardiovascular Prevention and Rehabilitation program, including aerobic training, resistance training and education/counseling. The active group will receive strategy training to simultaneously improve their diet in conjunction with our newly developed Brain Health Food Guide (EX+BHFG); the placebo control group (EX+BHEd) will receive brain health education to control for time and social participation. \[NOTE All participants must also be enrolled in the SCD cohort of the CCNA and undergo the CCNA's COMPASS-ND assessment at the beginning of the trial.\] The study is 6 months in duration and requires participants to attend 2.5 hr weekly sessions (1 hr supervised exercise, 0.5 hr exercise/stress education and 1 hr nutrition or brain health education) and to exercise on their own an additional 3-4 times per week. Participants are assessed on measures of cognition, brain health (MRI), functional status at baseline, post intervention and 6 month follow-up.