The aim of this trial is to compare the effectiveness of center-based versus home-based physical activity delivery among people with MCI and early dementia and to understand the influence of person and setting characteristics.~OBJECTIVES:~Primary: To compare the effectiveness of centre-based versus home-based physical activity delivery among people with MCI or early dementia, as measured by percent achievement of physical activity guidelines.~Secondary:~(i) To determine the influence of person- and setting-specific factors. (ii) To estimate the cost-effectiveness of centre-based and home-based physical activity.~Exploratory:~i) To compare the effect of centre- and home-based physical activity on other outcomes.~ii) To explore whether participants consider certain aspects of the program to be important to program effectiveness.~METHODS:~The investigators will conduct a 3-month proof-of-concept, double-blinded randomized, parallel group trial to compare the effectiveness of centre-based and home-based physical activity in helping people with MCI and early dementia meet physical activity recommendations.~Participants will be randomized to one of two physical activity delivery options.The goal of both arms will be to have participants reach physical activity guidelines by the end of the 3-month intervention.~Participants who are randomized to centre-based physical activity will attend physical activity programming at a centre (University of Waterloo or Toronto Rehabilitation Institute) once per week for one hour. Additional physical activity will be prescribed at home.~Participants who are randomized to the home-based physical activity will received a physical activity prescription to be completed at home. They will also receive monthly support calls to assess achievements and barriers and to adjust the prescription.~All assessors will be blinded to group allocation.
The study is a proof-of-concept, double-blinded randomized, parallel group trial to compare the effectiveness of centre-based and home-based physical activity in helping people with MCI and early dementia meet physical activity recommendations. The primary outcome is achievement of physical activity recommendations. Secondary outcomes include cost-effectiveness and improvements in health and function.