Skip to main content
OpenTrials
Completed

NCT Number: NCT02615171

RELAX: A Mobile Application Suite Targeting Obesity and Stress

This research is being done is to evaluate the feasibility and acceptability of a novel weight loss mobile app that was designed to be less burdensome than traditional weight loss apps.

Completed

Looking for future studies?

Notify Me

Key information

Conditions

Stress Body Weight Pathological Conditions, Signs and Symptoms Signs and Symptoms Weight

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

University of Connecticut

Storrs, Connecticut, 06269, United States

About this study

Obesity and stress are highly comorbid and both increase risk for cardiovascular disease (CVD). Stress is associated with disinhibited eating, junk food consumption and low consumption of produce and whole grains. Both stress and stress-induced eating are not only associated with obesity but also predict worst outcomes in lifestyle interventions. Stress and stress-induced eating should be targeted in interventions to maximize weight loss; however, this makes for a very intensive intervention. Technology could be leveraged to reduce intervention burden.

In this trial investigators propose to compare the feasibility, usability, acceptability, and burden of an traditional weight loss app that includes diet and physical activity self-monitoring features to an app (Slip Buddy) we developed that focuses on self-monitoring of stress eating. With Slip Buddy, the user is just asked to track overeating episodes, indicating when they are triggered by stress. The majority of weight loss apps are burdensome to users by requiring them to self-monitor diet and exercise. They also ignore major barriers to weight loss, such as stress. This work moves the field forward by addressing user burden and an important barrier to weight loss.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Have a BMI of 27-45
  • Currently use an Android smartphone
  • Have cell phone connectivity at home and work
  • Uses a smartphone every day

Exclusion criteria

  • Under the age of 18 and over the age of 65;
  • BMI under 27 or over 45;
  • Not interested in losing weight;
  • Does not currently own a smartphone;
  • Smartphone type and/or version not meeting app requirements;
  • No phone connectivity at home and work;
  • Unable to walk unaided for ¼ mile without stopping;
  • Has a condition that precludes dietary changes (i.e. ulcerative colitis, Crohn's disease, active diverticulitis, renal disease);
  • On a medication affecting weight;
  • Type 1 or 2 diabetes;
  • Had gastric bypass surgery;
  • Had or plans to have gastric bypass surgery during the study period;
  • Pregnant/lactating;
  • Has bipolar disorder, substance abuse, bulimia, or severe depression;
  • Lost 5% or more body weight in the last 3 months;
  • Has not experienced emotional eating over the last week;
  • On medication affecting weight;
  • Has concerns about being audiotaped;
  • Prisoner;
  • Unable to provide consent; or
  • Non-English speaking

Treatment and study plan

Comprehensive Dietary Self-Monitoring; Device: smartphone; Other: physical activity

Behavioral

The intervention includes Facebook-delivered weight loss counseling and the use of MyFitnessPal, a comprehensive diet and exercise self-monitoring app. The intervention will last for 12 weeks. In addition to weight loss counseling in a private Facebook group, participants will be encouraged to use the self-monitoring app to enter everything they eat and do for exercise during the intervention period (12 weeks). Participants will receive a daily calorie goal directly from the app. Participants will receive a Fitbit scale to take their weight weekly and at assessments.

Simple Dietary Self-Monitoring; Device: smartphone; Other: physical activity

Behavioral

Arm: Active Comparator: Simple Dietary Self-Monitoring he intervention includes Facebook-delivered weight loss counseling and the use of Slip Buddy, an app created by the investigative team that only requires users to record instances of overeating by hitting a single button and then indicate the overeating trigger and stress and hunger levels. The intervention will last for 12 weeks. In addition to the weight loss counseling, participants will be asked to use the Slip Buddy app during the intervention period (12 weeks). Participants will receive a Fitbit scale to take their weight weekly and at assessments.

Primary outcomes

  1. Percentage of Days App Used Over 12 Weeks

    Time frame: 12 weeks

    App use was measured for each condition using either backend data from Slip Buddy or reviewing MyFitnessPal entries indicating use over each 24-hour period.

  2. Usability

    Time frame: 12 weeks

    Usability will be assessed using the System Usability Scale (SUS), a 10-item measure with 5-point Likert scale response options (Strongly Agree to Strongly Disagree). Scores are summed (0-40) then converted to a 0-100 scale, with higher scores indicating higher usability. Scores above 58 are considered above average, and scores above 80 are considered to indicate high usability where participants are likely to recommend the product to friends.

  3. Acceptability

    Time frame: 12 weeks

    Acceptability was assessed with a single item at 12 weeks assessing perceived helpfulness of the assigned app: "Tracking my diet and exercise with MFP/slips with Slip Buddy was helpful" (responses on a 5-point Likert scale from strongly disagree to strongly agree). Acceptability was indicated by responses of agree or strongly agree.

  4. Burden

    Time frame: 12 weeks

    At 12 weeks, participants were asked how burdensome the task of using their assigned application was on a scale of 0-100, 0 being not at all burdensome and 100 being very burdensome.

Secondary outcomes

  1. Percent Weight Change From Baseline to 12-Week Follow-Up

    Time frame: 12 weeks

    A digital scale (Fitbit Aria) will be used to record weight. Percent weight change was calculated using weight at baseline and weight at 12-week follow-up. Missing values were calculated using last carry forward (LOCF).

  2. Change in Perceived Stress From Baseline to 12-Week Follow-Up

    Time frame: 12 weeks

    The Perceived Stress Scale is a 14-item measure of perceived stress. Scores range from 0-56, higher scores indicate higher perceived stress.

  3. Change in Emotional Eating From Baseline to 12-Week Follow-Up

    Time frame: 12 weeks

    Three-Factory Eating Inventory is an 18-item measure and the emotional eating subscale consists of 3 items on a 4-point Likert scale. The score is derived by a multi-step equation. The range of scores for this subscale is 0-100, higher scores indicate higher emotional eating.

Sponsors and collaborators

Lead sponsor

University of Connecticut

Other

Collaborators

  • National Heart, Lung, and Blood Institute (NHLBI)
  • Worcester Polytechnic Institute

Registry information

Important dates

Study start
2019
Primary completion
2019
Study completion
2019
First posted
Nov 26, 2015
Registry last updated
Apr 13, 2021

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Related clinical trials

Published trials that share one or more normalized conditions with this study.