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Exploring Beliefs and Behaviors About Weight Loss in Couples

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT01777711
First Posted: January 29, 2013
Last Update Posted: September 26, 2014
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
Duke University
  Purpose
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).

Condition Intervention
Obesity Behavioral: Mental Contrasting- Individual Behavioral: Mental Contrasting- Couple

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Primary Purpose: Treatment
Official Title: Exploring Beliefs and Behaviors About Weight Loss in Couples

Resource links provided by NLM:


Further study details as provided by Duke University:

Primary Outcome Measures:
  • weight loss [ Time Frame: one month ]
    Measure weight loss between baseline and one month visits


Secondary Outcome Measures:
  • dietary changes [ Time Frame: one month ]
    Look at dietary changes in self-report questionnaire.

  • number of minutes of physical activity [ Time Frame: one month ]
    Measure minutes of physical activity through self-report questionnaire.


Enrollment: 140
Study Start Date: October 2012
Study Completion Date: April 2014
Primary Completion Date: April 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 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.
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.
Active Comparator: 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.
Behavioral: 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.

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).
  Eligibility

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
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
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01777711


Locations
United States, North Carolina
Duke University Medical Center
Durham, North Carolina, United States, 27710
Sponsors and Collaborators
Duke University
Investigators
Principal Investigator: Isaac Lipkus, PhD Duke University School of Nursing
  More Information

Responsible Party: Duke University
ClinicalTrials.gov Identifier: NCT01777711     History of Changes
Other Study ID Numbers: Pro00040490
First Submitted: January 25, 2013
First Posted: January 29, 2013
Last Update Posted: September 26, 2014
Last Verified: September 2014

Keywords provided by Duke University:
mental contrasting
weight loss
obese couples
obesity
overweight
planning
health
diet
exercise
physical activity
goal
goal-setting

Additional relevant MeSH terms:
Weight Loss
Body Weight Changes
Body Weight
Signs and Symptoms