Dual Task Aerobic Exercise for Older Adults With Cognitive Impairment (HM2)

Study of Community Based Dual Task and Aerobic Exercise Intervention on Cognition and Mobility in Older Adults Without Dementia

The investigators proposed research will establish whether combining aerobic exercise with cognitive challenges is feasible and effective in community dwelling older adults with early signs of cognitive impairment.

To determine the effects of dual-task aerobic exercise training on community dwelling older adults with early signs of cognitive impairment. We will compare an exercise intervention (E-I) versus an exercise control (E-C) group. Each week, both groups will accumulate a minimum of 120 minutes of exercise (target 150 minutes) from community-based group classes (50 minutes of aerobic exercise) and also complete 45 minutes of beginner-level Square Stepping Exercise (SSE). The E-I group will also answer cognitively challenging questions while doing SSE (dual-task training). This study will determine whether a combined multiple modality (primary component being aerobic exercise) and dual-task exercise program is both feasible and effective for improving cognitive and mobility status, as well as vascular compliance, in older adults who may be at risk for cognitive and mobility decline.

Inclusion Criteria:

• Male/Female 55-90 years old.
• Montreal Cognitive Assessment score ≤27
• Preserved Instrumental Activities of Daily Living (based on Lawton-Brody Instrumental Activities of Daily Living Sale)

Exclusion Criteria:

• Dementia (i.e., Mini-Mental Examination score <24 or self-reported physician diagnosis)
• Major Depression (>=16 on the Center for Epidemiologic Studies - Depression Scale combined with clinical judgment by primary study physician)
• Other neurological or psychiatric disorders
• Recent history of severe cardiovascular conditions
• Significant orthopedic conditions
• Have blood pressure >180/100 mmHg or <100/60 mmHg
• Unable to comprehend questionnaire material/study procedures