Exploring Beliefs and Behaviors About Weight Loss in Couples

Study Overview
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Brief Summary
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This study explores among couples in which both members are obese how the use of mental contrasting along with implementation intentions influence intentions and behavior related to weight loss (eating healthy and exercise), actual weight loss, as well as potential reasons (i.e., mediators) why these changes may occur (e.g., social support, changes in beliefs about weight loss, confidence in being able to eat healthy and diet).

Detailed Description
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This study explores among couples in which both members are obese how the use of mental contrasting along with implementation intentions influence intentions and behaviors related to weight loss (eating healthy and exercise), actual weight loss, as well as potential reasons (i.e., mediators) why these changes may occur (e.g., social support, changes in beliefs about weight loss, confidence in being able to eat healthy and diet). In mental contrasting procedures, people first imagine a desired future (e.g., eating healthy) and then reflect on the current negative reality (e.g., I snack too much). This process makes people aware of changes needed in the present to obtain future positive outcomes, and thus aids in increasing goal commitment and goal pursuit. In implementation intention procedures, individuals form if-then statements about how they will enact their goals in their everyday lives. Implementation intentions are highly effective at helping individuals achieve health behavior change. Recent studies suggest that the combined use of mental contrasting and implementation intentions produce more behavior change than either technique alone (e.g., diet) In this study, investigators test whether these procedures vary in their effectiveness when couple members are instructed to focus on themselves versus the relationship, the latter intended to instill a communal coping mindset (i.e., that losing weight is an issue that needs to be addressed as a couple enacted through mutually cooperative behaviors).

Official Title
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Exploring Beliefs and Behaviors About Weight Loss in Couples

Conditions
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Obesity

Intervention / Treatment
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* Behavioral: Mental Contrasting- Individual
* Behavioral: Mental Contrasting- Couple


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Married couples or couples living as married living in the same household for at least six months both members of couple are obese (BMI > 30). must be 18 years or older can read and write in English

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Couple condition<br>Couples randomized to the couple condition will undergo the experimental manipulations and both partners will complete all study measures. Both members of the couple will be given body mass index (BMI) based on measurements taken during the intervention. Both will complete three surveys on paper and do some prompted planning and goal-setting together regarding weight loss through healthier eating and physical activity. | Behavioral: Mental Contrasting- Couple<br>* Investigators will implement the manipulation of mental contrasting/implementation intentions, focusing on the couple. This will entail 3 steps that involve: 1) contrasting of positive future outcomes associated with present conditions that hinder achievement of positive future outcomes (i.e., barriers); 2) strategies to overcome barriers and hence facilitate weight loss; and 3) construction of implementation intentions.<br>|
| Active Comparator: Individual Condition<br>Couples randomized to the individual condition will be stratified on gender and one partner, chosen at random, will undergo the experimental manipulations and complete all study surveys while the other will not (heretofore called the active partner vs. the passive partner). The active partner will receive BMI feedback based on measurements taken during the intervention appointment, complete three surveys, and verbally state some goals and plans for weight loss to the passive partner. The passive partner will not complete any study materials or participate in the intervention during the session. | Behavioral: Mental Contrasting- Individual<br>* Investigators will implement the manipulation of mental contrasting/implementation intentions, focusing on the individual. This will entail 3 steps that involve: 1) contrasting of positive future outcomes associated with present conditions that hinder achievement of positive future outcomes (i.e., barriers); 2) strategies to overcome barriers and hence facilitate weight loss; and 3) construction of implementation intentions.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| weight loss | Measure weight loss between baseline and one month visits | one month | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| dietary changes | Look at dietary changes in self-report questionnaire. | one month | 
| number of minutes of physical activity | Measure minutes of physical activity through self-report questionnaire. | one month | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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planning, mental contrasting, weight loss, obese couples, obesity, overweight, health, diet, exercise, physical activity, goal, goal-setting