Adapting RDAD for DS

Inclusion Criteria - Adults with Down syndrome:

* Age \>35 yrs. with a diagnosis of DS as self-reported or reported by caregiver. This age range was selected as cognitive decline related to AD is observed at age \~31 in adults with DS.
* Sufficient functional ability to understand directions, communicate preferences, wants, and needs through spoken language.
* Living at home or in a supported living environment with a parent/caregiver who agrees to serve as a study partner.
* Self-reported ability to participate in physical activity.

Exclusion Criteria - Adults with Down syndrome:

* Unable to participate in moderate-to-vigorous physical activity.
* Self-reported, cardiovascular, metabolic or renal disease and/or signs or symptoms.

Inclusion Criteria - Caregivers

* Age ≥18 yrs.
* Reports being a primary caregiver of an adult with DS.
* English speaking.
* Self-reported ability to participate in physical activity.

Exclusion Criteria - Caregivers

* Unable to participate in moderate PA, i.e., brisk walking.
* Self-reported, cardiovascular, metabolic or renal disease and/or signs or symptoms.