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This study is a randomized controlled trial that compares 3 self-monitoring approaches for weight loss. GoalTracker is a standalone, technology-based intervention using a commercial smartphone app (MyFitnessPal) and email.
The investigators hypothesize that the group that delays diet tracking and receives additional intervention components (weekly personalized feedback, skills training, and action plans) will have greater weight loss at the end of the 12-week intervention and at 6-month followup, compared to (a) an intervention group that simultaneously tracks weight and diet for all 12 weeks and receives the same additional components, and (b) a control group that tracks only diet.
This study will examine whether a digital health intervention (GoalTracker) can promote weight loss among adults who are overweight or obese. Engagement in self-monitoring often declines over time, which is then associated with suboptimal weight loss. Finding ways to improve self-monitoring engagement, particularly in the first month of treatment, is needed. Promoting mastery, self-efficacy, and self-regulatory skills may help with maintaining high engagement.
The investigators aim to enroll 105 participants. All groups are asked to self-monitor daily on their smartphone using the free commercial mobile application MyFitnessPal over the course of the 12-week intervention.
Specifically, the study aims to...
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Sequential Intervention | Experimental |
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| Simultaneous Intervention | Experimental |
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| Control (diet-tracking only) | Experimental |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| self-monitoring of body weight | Behavioral | - weigh daily for 3 months and track their weight using the MyFitnessPal mobile app |
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| Measure | Description | Time Frame |
|---|---|---|
| Change in Weight | Weight will be collected in kilograms using a calibrated digital scale | Baseline, 1 month, 3 months |
| Measure | Description | Time Frame |
|---|---|---|
| Proportion of Individuals Achieving ≥ 5% Weight Loss | Weight will be collected in kilograms using a calibrated digital scale | Baseline to 3 months |
| Change in Caloric Intake | Caloric intake will will be assessed using the Automated Self-Administered 24-hour Dietary Intake Assessment (ASA24), an online dietary recall tool developed by the National Cancer Institute |
| Measure | Description | Time Frame |
|---|---|---|
| Physical Activity | Paffenbarger Activity Questionnaire (7 items) will assess physical activity. | Baseline, 3 months |
| Sleep Quality | Medical Outcomes Study (MOS) Sleep (12 items) will assess sleep quality. |
Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Michele G Lanpher, MA | Duke University | Principal Investigator |
| Gary G Bennett, PhD | Duke University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Duke University | Durham | North Carolina | 27705 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 30816851 | Derived | Patel ML, Hopkins CM, Brooks TL, Bennett GG. Comparing Self-Monitoring Strategies for Weight Loss in a Smartphone App: Randomized Controlled Trial. JMIR Mhealth Uhealth. 2019 Feb 28;7(2):e12209. doi: 10.2196/12209. |
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This data set is initially being used for the principal investigator's (Michele Lanpher) doctoral dissertation.
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| ID | Term |
|---|---|
| D009765 | Obesity |
| D050177 | Overweight |
| D015431 | Weight Loss |
| D001836 | Body Weight Changes |
| ID | Term |
|---|---|
| D044343 | Overnutrition |
| D009748 | Nutrition Disorders |
| D009750 | Nutritional and Metabolic Diseases |
| D001835 | Body Weight |
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12-week randomized controlled trial to compare 3 self-monitoring approaches for weight loss in a digital health intervention for adults who are overweight or obese
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| self-monitoring of diet | Behavioral |
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| weekly personalized feedback + lessons + action plans | Behavioral | - these are additional evidence-based intervention components |
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| Baseline, 3 months |
| Change in Weight at 6 Months | At 6-months (i.e., 3 months post-intervention), self-reported weight will be collected | 6 months |
| Self-Monitoring Engagement | Frequency of self-monitoring weight and diet; Consistency of self-monitoring weight and diet | Baseline to 1-month and 3 months |
| Self-Efficacy | Weight Efficacy Lifestyle Questionnaire (WEL) (20 items) will assess self-efficacy for eating. Separate surveys that were adapted will assess self-efficacy for self-monitoring of diet and weight. | Baseline, 1 month, 3 months |
| Mastery | The Automaticity subscale of The Self-Report Habit Index (SRHI) will assess mastery of self-monitoring diet and weight (4 items each). | Baseline, 1 month, 3 months |
| Self-Regulation | The Three Factor Eating Questionnaire-R18 (TFEQ-R18) (18 items) will assess self-regulation for controlled eating. Separate surveys that were adapted will assess self-regulation for self-monitoring of diet and weight. | Baseline, 1 month, 3 months |
| Baseline, 1 month, 3 months |
| Perceived Stress | Perceived Stress Scale (10 items) | Baseline, 3 months |
| Depressive Symptoms | Patient Health Questionnaire (PHQ-8) will assess depressive symptoms. | Baseline, 1 month, 3 months |
| Health-Related Quality of Life | EuroQol-5 Dimension (EQ-5D) (5 items) will assess health-related quality of life. | Baseline, 1 month, 3 months |
| D012816 |
| Signs and Symptoms |
| D013568 | Pathological Conditions, Signs and Symptoms |