Exploring Beliefs and Behaviors About Weight Loss in Couples

NCT ID: NCT01777711

Last Updated: 2014-09-26

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 140 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2012-10-31
• Study Completion Date: 2014-04-30

Brief Summary

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

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).

Conditions

Obesity

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT

Study Groups

Couple condition

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.

Group Type: ACTIVE_COMPARATOR

Mental Contrasting- Couple

Intervention Type: BEHAVIORAL

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.

Individual Condition

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.

Group Type: ACTIVE_COMPARATOR

Mental Contrasting- Individual

Intervention Type: BEHAVIORAL

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.

Interventions

Mental Contrasting- Individual

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.

Intervention Type: BEHAVIORAL

Mental Contrasting- Couple

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.

Intervention Type: BEHAVIORAL

Eligibility 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

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Duke University

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Isaac Lipkus, PhD

Role: PRINCIPAL_INVESTIGATOR

Duke University School of Nursing

Locations

Duke University Medical Center

Durham, North Carolina, United States

Countries

United States

Other Identifiers

Pro00040490

Identifier Type: -

Identifier Source: org_study_id