Obesity
Conditions
Brief summary
The purpose of the DATE study is to evaluate the feasibility and acceptability and a preliminary evaluation of the efficacy of a dyadic health behaviour change intervention to improve healthy eating, physical activity, and dyadic coping among older obese couples. This novel intervention will use a dyadic adaptation of common health behaviour change strategies and will promote a dyadic coping approach to health behaviour change that emphasize partners' interdependence and shared responsibility for the creation of a home environment conducive to a healthy lifestyle. For this project 35 obese older adults cohabiting dyads will be randomized to either the couples-based dyadic health behaviour change intervention or a couples-based nutrition counselling control condition.
Interventions
BEHAVIORALDyadic health behaviour change intervention
The dyadic behaviour change intervention adopts a dyadic coping perspective wherein appraisal of shared responsibility, agreement on tasks, and collaboration are fostered throughout the intervention. The intervention will target four behaviour goals: reducing overall caloric intake, substituting empty calorie foods with healthier alternatives, reducing sedentary behaviour, and increasing physical activity. The specific behavioural change strategies will include motivational interviewing, self-monitoring, goal setting, stimulus control, problem solving, and relapse prevention. Each session will also include a short education component on healthy eating to improve participants' adherence to the updated Canada's Food Guide. Participants will have access to web-based exercise training sessions. Intervention sessions will be delivered online.
BEHAVIORALDyadic nutrition counselling intervention
The couples-based education nutrition intervention will provide extensive information on healthy eating. However, it will not include any behavioural change principles. Topics will be based on Dietitians of Canada's Practice-based Evidence in Nutrition (PEN) discussions in the database that focus on healthy eating for older adults. The topics covered will include increasing fruits and vegetables, hidden (empty) calories, how to read food labels, portion control, reducing salt and saturated fat, plant-based proteins, and eating for healthy bones. Participants in this group will also be told to increase their levels of physical activity to 150 minutes of moderate to vigorous physical activity per week, as per the Canadian Guidelines. Participants will have access to web-based exercise training sessions. However, physical activity will not be discussed explicitly during the intervention. Intervention sessions will be delivered online.
Sponsors
Centre de Recherche de l'Institut Universitaire de Geriatrie de Montreal
Concordia University, Montreal
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
50 Years to 75 Years
Healthy volunteers
Yes
Inclusion criteria
* At least one of the partners is retired * Partners cohabitating for at least 2 years. * Obesity: BMI between 30-45 kg/m2
Exclusion criteria
1. Currently enrolled in a weight loss program 2. On a special diet 3. Eating disorder 4. Uncontrolled diabetes 5. Stroke 6. Heart problems (heart attack, heart failure, surgery of the heart or of the carotid arteries, pacemaker) 7. Other medical issues or medical treatment that would prevent doing physical activity
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Healthy Eating Index | Baseline, 4 months, 7 months, 16 months | Canadian adaptation of the Healthy Eating Index based on a 3-day food diary |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in weight (kg) | Baseline, 4 months, 7 months, 16 months | Body weight assessed using a digital scale |
| Change in waist circumference (cm) | Baseline, 4 months, 7 months, 16 months | Waist circumference assessed using a measuring tape anchored at the top of the hip bone. |
| Change in Relationship Satisfaction | Baseline, 4 months, 7 months, 16 months | Relationship satisfaction assessed using the Couples Satisfaction Index-4 (total score ranges from 0-21, with higher scores indicating greater relationship satisfaction). |
| Change in Dyadic Coping | Baseline, 4 months, 7 months, 16 months | Dyadic coping assessed using the Common Dyadic Coping subscale of the Dyadic Coping Inventory (total score ranges from 0-30, with higher scores indicating common more dyadic coping). |
| Change in Spousal Social Support for Diet | Baseline, 4 months, 7 months, 16 months | Diet social support assessed using the spousal version of the Social Support for Diet (total score ranges from 0 to 50 with higher scores indicating greater social support for diet). |
| Change in Spousal Social Support for Exercise | Baseline, 4 months, 7 months, 16 months | Spousal social support for exercise assessed using the spousal version of the Social Support for Exercise scale (total score ranges from 0 to 60 with higher scores indicating greater social support for exercise). |
| Change in Communal Coping | Baseline, 4 months, 7 months, 16 months | Communal coping assessed using a home-made communal coping scale (total score range from 6-60 with higher score indicating greater communal coping). |
| Change in Autonomy Support | Baseline, 4 months, 7 months, 16 months | Autonomy support assessed using the spousal version for the Important Other Climate Questionnaire (total scores 6-42, with higher scores indicating more autonomy support). |
| Change in Moderate-to-Vigorous Physical Activity (minutes per day) | Baseline, 4 months, 7 months, 16 months | Objective physical activity assessed using accelerometry for 7 consecutive days. |
| Change in self-reported physical Activity | Baseline, 4 months, 7 months, 16 months | Self-reported physical activity assessed using the Physical Activity Scale for the Elderly (total score ranges from 0 to 793, with higher scores indicating greater physical activity). |
Other
| Measure | Time frame | Description |
|---|---|---|
| Changes in Action Planning | Baseline, 4 months, 7 months, 16 months | Action planning assessed using a home-made questionnaire based on the Health Action Process Approach (total score ranges from 0-54, with greater score indicating more action planning). |
| Changes in Functional Fitness | Baseline, 4 months, 7 months, 16 months | Functional fitness assessed using the Short Physical Performance Battery (total score ranges from 0-12 with higher score indicating better functional fitness). |
| Changes in Maximal Handgrip Strength (kg) | Baseline, 4 months, 7 months, 16 months | Maximal handgrip strength assessed using a hand dynamometer. |
| Changes in Sleep Quality | Baseline, 4 months, 7 months, 16 months | Sleep quality assessed using Pittsburgh Sleep Quality Index (total score ranges 0 to 21, with higher score indicating poorer sleep quality) |
| Changes in Depressive Symptoms | Baseline, 4 months, 7 months, 16 months | Depressive symptoms assessed using the Center for Epidemiological Study-Depression (total score ranges 0 to 60, with higher score indicating more depressive symptoms) |
| Changes in Self-Efficacy for Exercise | Baseline, 4 months, 7 months, 16 months | Self-Efficacy for Exercise assessed using the Self-Efficacy for Exercise Scale (total score ranges from 5-25, with higher score indicating greater exercise self-efficacy). |
| Changes in Self-Efficacy for Diet | Baseline, 4 months, 7 months, 16 months | Self-Efficacy for Diet assessed using the Weight Efficacy LifeStyle Questionnaire (total score ranges from 0-180, with higher score indicating greater diet self-efficacy). |
Countries
Canada
Outcome results
None listed