Trials / Completed
CompletedNCT04494971
The PortionSize Smartphone App Pilot (PS Pilot)
Pilot Validation of an App to Estimate and Manage Portion Size: The PortionSize Smartphone App
- Status
- Completed
- Phase
- —
- Study type
- Observational
- Enrollment
- 15 (actual)
- Sponsor
- Pennington Biomedical Research Center · Academic / Other
- Sex
- All
- Age
- 18 Years – 65 Years
- Healthy volunteers
- —
Summary
The objective is to examine the preliminary validity, reliability and perceived participant satisfaction of the PortionSize app.
Detailed description
Overweight and obesity are a burgeoning public health concern, yet only a small minority of smartphone apps that claim to facilitate healthy eating and weight loss incorporate evidence-based principles. Such innovations are important as humans fundamentally cannot accurately estimate portion size. Indeed, portion size estimation errors account for \~50% of the error in self-reported food intake, and data from our laboratory has demonstrated that extensive training results in only modest improvements in portion size estimation accuracy and that portion size estimates remain inaccurate. Our long-term goal is to create simple and accessible interventions that assist individuals with weight control. In particular, we aim to provide easy-to-use phone apps that allow participants to monitor the portion sizes of the foods they consume. These apps guide participants on appropriate portion sizes and provide recommendations of food groups that should be consumed. To that end, we have developed the PortionSize app. We propose to improve the accuracy of portion size measurement, as it is poorly determined by self-report measures. This will occur via the development of the PortionSize smartphone app and this pilot study will test the usability as well as preliminary validity and reliability of the app functionality.
Conditions
Timeline
- Start date
- 2020-08-31
- Primary completion
- 2020-11-20
- Completion
- 2020-11-20
- First posted
- 2020-07-31
- Last updated
- 2024-11-19
- Results posted
- 2024-10-15
Locations
1 site across 1 country: United States
Source: ClinicalTrials.gov record NCT04494971. Inclusion in this directory is not an endorsement.