Effects of Inhibitory Control Training in Eating Behaviors
Condition: Overweight and Obesity
MeSH terms: Overweight
Study type: Interventional

Summary: 
      Overweight and obese individuals will be randomly assigned to a food-specific or generic
      inhibitory control training. Food intake, weight, and neural indices of inhibitory control
      will be assessed prior, immediately after the 4-week intervention, and 12-weeks after
      intervention completion to assess the effectiveness of a mobile inhibitory control training
      intervention over time for health outcomes.
    

Detailed description: 
      All participants will report to the lab for a baseline session, where their weight, average
      food intake for three days (using the Automated Self-Administer 24-hour Dietary Recall
      [ASA24] system), neural indices of inhibitory control (as assessed by the N2 event-related
      potential component during a food and genetic go/no-go task), appetitive drive toward food
      (as measured by the Power of Food Scale) and basic demographic information will be assessed.
      Based off their gender and baseline levels of inhibitory control (indicated by the N2),
      participants will be assigned to a four week food-specific inhibitory control training or a
      generic inhibitory control training. Trainings are administered on a mobile device via an app
      and participants select four our of five business days to complete the trainings on.
      Immediately after the four weeks, participants will come in for a follow-up session where
      their weight, food intake, N2, and appetitive drive to food will be assessed again. Finally,
      participants will have a 12-week waiting period where they do not complete the trainings.
      After the 12 weeks, they will come in for a final lab visit where their weight, food intake,
      N2, and appetitive drive to food will be assessed one last time.
    

Intervention name(s): Inhibitory Control Training
Intervention type(s): Behavioral
Intervention description(s): Computerized go/no-go task where individuals make responses to certain items (go trials) and withhold responses from certain items (no-go trials, in this case, trials surrounded by a black box). Intervention is designed to target and improve inhibitory control cognitive mechanisms in general (generic arm) or towards high-calorie foods specifically (food arm).
Allocation: Randomized
Intervention model: Parallel Assignment
Intervention model description: There are two arms of this study: food-specific inhibitory control training (condition of interest) and a generic inhibitory control training (active control). Given baseline levels of inhibitory control (assessed at baseline visit), participants are randomly assigned to the generic or food-specific month long inhibitory control training. All other protocols, including baseline and follow-up visits and assessment of food intake and weight, are identical and follow the same time line across the two arms.
Masking: Double (Participant, Outcomes Assessor)
Primary purpose: Treatment
Keywords: inhibitory control training; food; event-related potentials; weight reduction