- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03375853
Computerized Response Training Obesity Treatment (CC)
Translational Neuroscience: Response Training for Obesity Treatment
Study Overview
Status
Conditions
Detailed Description
Obesity causes 300,000 US deaths yearly, but most treatments do not result in lasting weight loss. People who show greater brain reward and attention region response, and less inhibitory region response, to high-calorie food images/cues show elevated future weight gain, consistent with the theory that overeating results from a strong approach response to high-calorie food cues paired with a weak inhibitory response. This implies that an intervention that reduces reward and attention region response to such food and increases inhibitory control region response should reduce overeating that is rooted in exposure to pervasive food cues. Computer-based response-inhibition training with high-calorie foods has decreased attentional bias for and intake of the training food, increased inhibitory control, and produced weight loss in overweight participants in 3 proof-of-concept trials, with effects persisting through 6-mo follow-up. A pilot trial found that overweight/obese adults who completed a multi-faceted 4-hr response-inhibition training with high-calorie food images and response-facilitation training with low-calorie food images showed reduced fMRI-assessed reward and attention region response to high-calorie training foods and greater body fat loss than controls who completed a rigorous 4-hr generic response-inhibition/response-facilitation training with non-food images (d=.95), producing a 7% reduction in excess body fat over the 4-wk period. The investigators propose to evaluate a refined and extended version of this response-training intervention.
Aim 1: Randomize 180 overweight/obese adults to a 4-wk response training obesity treatment or a generic inhibition training control condition that both include bi-monthly Internet-delivered booster training for a year and a smart phone response training app that can be used when tempted by high-calorie foods, assessing outcomes at pre, post, and at 3-, 6-, and 12-month follow-ups (e.g., % body fat, the primary outcome).
Aim 2: Use fMRI to test whether reduced reward and attention region response, and increased inhibitory region response to high-calorie food images used and not used in the response training mediate the effects of the intervention on fat loss. The investigators will also test whether during training participants show acute reductions in reward and attention region response, and increases in inhibitory response to high-calorie training food images to capture the learning process, assess generalizability of the intervention to food images not used in training, and collect behavioral data on mediators.
Aim 3: Test whether intervention effects will be stronger for those who show less inhibitory control in response to high-calorie food images, a genetic propensity for greater dopamine signaling in reward circuitry, and greater pretest reward and attention region response, and weaker inhibitory region response to high-calorie food images, based on the theory that response training is more efficacious for those with a strong pre-potent approach tendency to high-calorie foods.
During the Covid-19 shelter-at-home order, we will not measure in person only outcomes including BodPod assessments, height and weight measurement for BMI calculation, electrocardiogram (ECG) assessments and fMRI scanning for all participants that have assessments due during this order.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Oregon
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Eugene, Oregon, United States, 97403
- Oregon Research Institute
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Body Mass Index Between 25 and 35
Exclusion Criteria:
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Active Comparator: Control Condition
Participants will complete computer based response training tasks that will incorporate pictures of birds, flowers, and mammals.
As part of the computer based training, participants will be instructed to respond or inhibit response to certain of these stimuli in order to bring about a change in the participant response to certain stimuli.
These tasks will be structured identically to those presented in the experimental condition, only the appearance and context of the stimuli will be different (i.e., non-food versus food items).
The computer tasks described above comprise the Generic Response Training Control Intervention.
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Participants complete four computer based training tasks each visit, over the course of a few lab visits.
Participants then perform weekly booster sessions in a more natural home or community environment over the internet using the same computer based training tasks.
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Experimental: Experimental Condition
Participants will complete computer-based response training tasks that will incorporate pictures of healthy food, unhealthy food, and glasses of water.
As part of the computer-based training, participants will be instructed to respond or inhibit responses to certain of these stimuli in order to bring about a change in the participant response to certain stimuli.
These tasks will be structured identically to those presented in the control condition, only the appearance and context of the stimuli will be different (i.e., food versus non-food items).
The computer tasks described above comprise the Computer Based Response Training Weight Loss Intervention.
To optimize the intervention, we narrowed the low-calorie food stimulus set to make a better distinction between high-calorie and low-calorie foods and we changed the filler images (water and furry mammals) in the go/no-go task from 100% "go" to 50% "go" and 50% "no-go" to measure learning of stimulus-specific respond associations.
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Participants complete four computer based training tasks each visit, over the course of a few lab visits.
Participants then perform weekly booster sessions in a more natural home or community environment over the internet using the same computer based training tasks.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Body Fat Change
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change in participant's body fat percentage
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Baseline, 1 month, 3 months, 6 months, 12 months
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in Eating Disorder Symptoms
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Eating disorder symptoms as measured with the Eating Disorder Diagnostic Interview
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Baseline, 1 month, 3 months, 6 months, 12 months
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Dietary Restraint, Emotional Eating, and External Eating
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Dietary Restraint, Emotional Eating, and External Eating (aggregate score) as measured by the Dutch Eating Behavior Questionnaire
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Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Disinhibited Eating Behavior
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Chang in Disinhibited Eating as measured by the Three Factor Eating Questionnaire
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Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Eating in the Absence of Hunger Behavior
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Eating When Not Hungry as measured by the Eating in the Absence of Hunger Questionnaire
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Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Food Addiction Behavior
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Problematic eating patterns associated with symptoms of addictive behaviors as measured by the Yale Food Addiction Scale
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Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Physical Activity
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Physical Activity as measured by the Paffenberger Questionnaire
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Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Alcohol Use Behavior
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Substance use frequency (i.e., number of times per day) for alcohol of participants as measured by the Daily Drinking Questionnaire
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Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Substance Use Behavior
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Substance use frequency (i.e., number of times per day) for common recreational drugs of participants as measured by the Daily Drug Taking Questionnaire
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Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Participant Ratings of Unhealthy Food Palatability
Time Frame: Baseline, 1 month
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Change in Participant behavioral response to food pictures, and subjective palatability rating
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Baseline, 1 month
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Change in Participant Ratings of Food Monetary Value
Time Frame: Baseline, 1 month
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Change in Participant behavioral response to food pictures, and willingness to pay given dollar amounts (aggregate score) for the pictured food
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Baseline, 1 month
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Change in Food Craving and Liking Behavior
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change Participant food craving behaviors as measured by the Food Craving and Liking Scale
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Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Body Mass Index
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Participant BMI using standard methods of calculation
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Baseline, 1 month, 3 months, 6 months, 12 months
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Change in mean R-Peak Amplitude
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change in mean R-Peak Amplitude measured using three-lead ECG using PowerLab 8 Diagnostic Suite
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Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Heart Rate Variability
Time Frame: Baseline, 1 month, 3 months, 6 months, 12 months
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Change in Heart Rate Variability measured using three-lead ECG using PowerLab 8 Diagnostic Suite
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Baseline, 1 month, 3 months, 6 months, 12 months
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Eric Stice, PhD, Stanford University
Publications and helpful links
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- DK112762
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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