Exploring Beliefs and Behaviors About Weight Loss in Couples

This study is ongoing, but not recruiting participants.
Sponsor:
Information provided by (Responsible Party):
Duke University
ClinicalTrials.gov Identifier:
NCT01777711
First received: January 25, 2013
Last updated: February 18, 2014
Last verified: December 2013
  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 ] [ Designated as safety issue: No ]
    Measure weight loss between baseline and one month visits


Secondary Outcome Measures:
  • dietary changes [ Time Frame: one month ] [ Designated as safety issue: No ]
    Look at dietary changes in self-report questionnaire.

  • number of minutes of physical activity [ Time Frame: one month ] [ Designated as safety issue: No ]
    Measure minutes of physical activity through self-report questionnaire.


Estimated Enrollment: 80
Study Start Date: October 2012
Estimated Study Completion Date: May 2014
Estimated 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

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
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
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: 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

No publications provided

Responsible Party: Duke University
ClinicalTrials.gov Identifier: NCT01777711     History of Changes
Other Study ID Numbers: Pro00040490
Study First Received: January 25, 2013
Last Updated: February 18, 2014
Health Authority: United States: Institutional Review Board

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:
Obesity
Weight Loss
Overnutrition
Nutrition Disorders
Overweight
Body Weight
Signs and Symptoms
Body Weight Changes

ClinicalTrials.gov processed this record on July 22, 2014