Exploring Beliefs and Behaviors About Weight Loss in Couples

Duke University

Status: Completed

Conditions: Obesity

Treatments: Behavioral: Mental Contrasting- Individual; Behavioral: Mental Contrasting- Couple

Study type: Interventional

Funder types: Other

Identifiers

NCT01777711

Pro00040490

Details and patient eligibility

About

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).

Full description

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).

Enrollment: 140 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion and exclusion criteria

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

Trial design

140 participants in 2 patient groups

Couple condition

Active Comparator group

Description:

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.

Treatment:

Behavioral: Mental Contrasting- Couple

Individual Condition

Active Comparator group

Description:

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.

Treatment:

Behavioral: Mental Contrasting- Individual