Overweight and Obesity
Conditions
Brief summary
The objective of this application is to pilot test and evaluate the acceptability and efficacy of a program to facilitate weight loss by enhancing memory for a recently consumed meal.
Detailed description
Once enrolled, all participants will receive behavioral weight loss treatment. Treatment will be 12 weeks in duration and will consist of 7 sessions. The content of sessions will provide the main elements described in behavioral therapy programs for obesity, based on empirical literature. Participants will be provided handouts, and the handout content will be based on our clinic treatment manual and published behavior therapy protocols. The program will be administered in individual 30-60-min sessions with a behavioral coach meeting every other week. This program emphasizes self-monitoring of food intake. It also emphasizes gradual weight loss, increasing physical activity, and improving diet through permanent lifestyle changes. Program topics include: self-monitoring of eating behavior, physical activity, changing the home environment and nutrition education. All treatment sessions will be conducted by licensed clinical health psychologists or psychology doctoral level students with experience in leading weight loss interventions.
Interventions
BEHAVIORALGuided Self-Help Behavioral Weight Loss
Guided self-help Behavioral Weight Loss including 7 visits over 12 weeks. The treatment content includes self-monitoring, healthy eating, stimulus control, increasing physical activity, reducing sedentary activity, planning ahead for high-risk situations, and relapse prevention. The 7 visits are conducted with a behavioral coach to give participants educational materials and to promote accountability. The behavioral coach's role in the gshBWL program is to measure participant weight, collect self-monitoring booklets, clarify materials, and problem-solve barriers to adherence.
Sponsors
University of California, San Diego
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes
Inclusion criteria
1. Participant must be overweight (BMI between 25-40) 2. Participant must be between the ages of 18-55 3. Participant can read at a minimum of an 5th grade level in English 4. Participant is willing to participate and to commit to 12 weeks of treatment and attendance at assessments
Exclusion criteria
1. Participant is unable to exercise (ex., due to physical or medical reasons) 2. Major psychiatric disorder diagnoses, including an eating disorder 3. Diagnoses of a serious current physical disease (such as diabetes) for which physician supervision of diet is needed 4. Participant who takes medications that would influence weight and eating, or cognitive functioning, such as attention, concentration, or mental status
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Weight Change | Change from baseline at an average of 12 weeks and 24 weeks | Weight and height will be combined to report BMI in kg/m\^2 |
| Attrition | Change from baseline at an average of 12 weeks | The percentage of participant attrition from each treatment arm |
| Self-Monitoring Adherence | Post-Treatment (12 weeks following baseline) | The number of days that participants self-monitor |
| Acceptability | Measured at an average of 12 weeks following baseline | Average of likert ratings of self-monitoring method, was it easier, more helpful, or more convenient than any methods participants may have used to self-monitor in the past |
| Attendance | Post-Treatment (12 weeks following baseline) | The number of treatment visits attended |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Working Memory | Change from baseline at an average of 12 weeks and 24 weeks | Digit Span: scaled total forward and backward score |
| Food specific memory | Change from baseline at an average of 12 weeks and 24 weeks | A food version of the California Verbal Learning Test. Sum of words recalled across the five recall trials of list A (high calorie food, low calorie food, neutral words) as a measure of global index of verbal learning ability. |
Other
| Measure | Time frame | Description |
|---|---|---|
| Restraint | Change from baseline at an average of 12 weeks and 24 weeks | Restraint subscale from the Three Factor Eating Questionnaire |
Outcome results
None listed