Testing a Novel Stress-induced Eating Intervention for Cancer Prevention

Overview

Subjects will be enrolled in a stress-induced eating intervention with 5, 7, or 9 treatments or control. Treatment will comprise imagining a stressful event, engaging in a stress relief activity (Progressive Muscle Relaxation), and consuming a fruit once per day. There will be one lab visit at baseline in which participants undergo an acute laboratory stressor (i.e., speech and math tasks) and consume food from a buffet. There will be another lab visit at two weeks post-intervention. In the second (and final) lab visit, participants will repeat the acute laboratory stressor (i.e., speech and math tasks) and buffet, and additionally complete questionnaires about their experience in the study.

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Parallel Assignment
    • Primary Purpose: Prevention
    • Masking: Single (Outcomes Assessor)
  • Study Primary Completion Date: May 2021

Interventions

  • Behavioral: Pavlovian Conditioning
    • Imagining a stressful event, engaging in progressive muscle relaxation, and eating fruit

Arms, Groups and Cohorts

  • Active Comparator: Progressive Muscle Relaxation only
    • Condition 1: 7-dose control – Progressive Muscle Relaxation only
  • Experimental: Pairs Progressive Muscle Relaxation with fruit
    • Condition 2: 5-dose – Pairs Progressive Muscle Relaxation with fruit 5 consecutive days; Condition 3: 7-dose – Pairs Progressive Muscle Relaxation with fruit 7 consecutive days; Condition 4: 9-dose – Pairs Progressive Muscle Relaxation with fruit 9 consecutive days

Clinical Trial Outcome Measures

Primary Measures

  • Healthy Eating Index
    • Time Frame: 14 days after last dose
    • The Healthy Eating Index was developed by the USDA to capture diet quality. The total score is able to capture both the healthiness of fruits and the unhealthiness of classic comfort foods that are high in calories, fat, and sugar.

Secondary Measures

  • Calorie intake
    • Time Frame: 14 days after last dose
    • Calorie intake will be recorded across all the foods that the participants choose to eat in the outcome assessment buffet.
  • Acceptability/Credibility
    • Time Frame: 14 days after last dose
    • The Credibility/Expectancy Questionnaire is a validated measure to access issues of intervention acceptability, credibility, and expectancy.

Participating in This Clinical Trial

Inclusion Criteria

  • age 18 or older – fluent in English – access to an internet-connected device – reporting a neutral taste and moderate novelty for at least one fruit – reporting household size-adjusted income less than or equal to 200% of the federal poverty threshold – perceived stress scale score of 21.82 (1 SD above the national mean) – BMI 25 – scoring 3.23 on the Dutch Eating Behavior-Emotional Eating Questionnaire Exclusion Criteria:
  • on a diet that would compel them to refrain from eating food in the laboratory buffet – allergy to any foods presented in the buffet – selecting a fruit as one or more of top three choices of foods that would make them feel better if stressed
  • Gender Eligibility: All

    Minimum Age: 18 Years

    Maximum Age: N/A

    Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

    Investigator Details

    • Lead Sponsor
      • University of California, Los Angeles
    • Provider of Information About this Clinical Study
      • Principal Investigator: A. Janet Tomiyama, Principal Investigator – University of California, Los Angeles
    • Overall Contact(s)
      • A. Janet Tomiyama, PhD, 310-206-6875, tomiyama@psych.ucla.edu

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