Combining Exercise and Diet in Older Adults
Overview
- Phase
- Phase 2
- Intervention
- Not specified
- Conditions
- Health Behavior
- Sponsor
- National Institute on Aging (NIA)
- Enrollment
- 200
- Locations
- 1
- Primary Endpoint
- Increase in aerobic physical activity measured by the Stanford 7-Day Physical Activity Recall
- Status
- Completed
- Last Updated
- 17 years ago
Overview
Brief Summary
The purpose of this study is to evaluate the effects of a 12-month telephone-supervised, home-based physical activity and dietary intervention, conducted in either a sequential or simultaneous fashion, on improving physical activity and dietary patterns in a high-stress population.
Detailed Description
This study combines elements of two previous studies--Teaching Healthy Lifestyles for Caregivers (TLC2) and Counseling Advice for Lifestyle Management (CALM)--to compare exercise and diet interventions in caregivers and non-caregivers. Two hundred and forty healthy men and women ages 50 and older, half caregivers and half non-caregivers, will be randomly assigned to one of four conditions: * a 12-month physical activity intervention and a 12-month dietary counseling intervention delivered simultaneously; * a 12-month counseling intervention first focusing on physical activity followed by the addition of dietary counseling; * a 12-month counseling intervention first focusing on dietary counseling followed by the addition of physical activity counseling; or * a 12-month attention-control condition focusing on stress-management skills training. Data on physical activity participation, saturated fat consumption, and related quality of life indicators (e.g., improved physical functioning, fitness, sleep, and psychological well-being) will be collected at baseline, 4 months, 8 months, and 12 months post-test. The primary hypotheses are: * participants assigned to the physical activity and dietary counseling conditions will show greater improvements in physical activity participation and saturated fat consumption at 12 months compared to the attention-control condition; and * participants in the sequentially-delivered counseling interventions will show greater improvements in physical activity and saturated fat consumption compared to participants in the simultaneously-delivered interventions.
Investigators
Eligibility Criteria
Inclusion Criteria
- •Men and women ages 50 and older
- •Current family caregiver
- •Currently experiencing significant psychological stress
- •Free of any medical condition that would limit participation in independent exercise
- •Not currently engaged in a regular pattern of physical conditioning
- •Current dietary pattern includes suboptimal total fat, saturated fat and vegetable and fruit consumption
- •Free of chronic clinical psychopathology
- •Stable on current medications
- •Planning to remain in the geographic area throughout the duration of the trial
- •Able to read and speak English sufficiently to understand protocol materials
Exclusion Criteria
- •Under the age of 50
- •Currently under treatment for an acute, serious medical condition (e.g. cancer, heart disease, stroke)
- •Physically active on a regular basis (i.e. performing more than 60 minutes per week of aerobic physical activity of at least a moderate intensity)
- •Dietary patterns meet current recommendations for saturated fat and vegetable and fruit consumption
- •Unstable and/or uncontrolled on medications for chronic medical conditions
- •Unable or unwilling to use a telephone unaided
- •Unwilling to accept random assignment to study condition
Outcomes
Primary Outcomes
Increase in aerobic physical activity measured by the Stanford 7-Day Physical Activity Recall
Time Frame: baseline, 4 months, 8 months, and 12 months
decrease in saturated fat measured by the Block food frequency questionnaire
Time Frame: baseline, 4 months, 8 months, and 12 months
Secondary Outcomes
- Physical performance on a symptom-limited, graded exercise treadmill test(baseline, 4 months, 8 months, and 12 months)
- quality of life and psychological questionnaires measuring physical functioning(baseline, 4 months, 8 months, and 12 months)
- sleep(baseline, 4 months, 8 months, and 12 months)
- perceived stress(baseline, 4 months, 8 months, and 12 months)
- depressive symptoms(baseline, 4 months, 8 months, and 12 months)