PortionSize Study 1 Laboratory-based Evaluation)

NCT04700904 | Completed Results

• 1 other identifier: PBRC 2019-062
• Study Type: observational
• Target: 43
• Locations: 1 country
• Sites: 1

Brief Summary

The objective is to test the accuracy and user satisfaction of the PortionSize™ app and the MyFitnessPal© app during laboratory controlled test meals.

Conditions

Dietary Habits

Outcome Measures

Primary Outcomes (1)

• Difference in Simulated Energy (kcal) Intake Between the Criterion Measure (Weighed Food) and Two Smartphone Apps (PortionSize and MyFitness Pal).

  The outcome variable was the difference between the criterion measure (directly weighed foods from a simulated lunch meal) and two apps: PortionSize and MyFitnessPal. The outcome measure for the PortionSize app was calculated as: energy intake values from PortionSize minus energy intake values from weighed foods. The outcome measure for the MyFitnessPal app was calculated as: energy intake values from MyFitnessPal minus energy intake values from weighed foods.

  2.5 hours

Eligibility Criteria

• Age: 18 Years - 70 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Healthy participants ages 18 to 70 in the Baton Rouge, LA area.

You may qualify if:

• Male or female, age 18-70 years
• Body mass index (BMI) 18.5 - 50
• Ownership of an iPhone model 6s or later, which the participant is willing to use for the study
• Access to Apple ID, password, and email address and willing to use them in the course of the study
• Willing to use data and any accompanying charges as part of study participation
• Willing to be re-contacted for future research and/or follow-up

You may not qualify if:

• Center employee
• Any condition or circumstance that could impede study completion

Sponsors & Collaborators

• Pennington Biomedical Research Center: lead

Study Sites (1)

Pennington Biomedical Research

Baton Rouge, Louisiana, 70808, United States

Location

Related Publications (1)

• Lozano CP, Neubig KE, Saha S, Broyles ST, Apolzan JW, Martin CK. Validity of the PortionSize application compared with that of MyFitnessPal for accurately estimating intake: a randomized crossover laboratory-based evaluation. Am J Clin Nutr. 2024 Aug;120(2):419-430. doi: 10.1016/j.ajcnut.2024.05.023. Epub 2024 May 31.

  PMID: 38825184 DERIVED

MeSH Terms

Conditions

Feeding Behavior

Condition Hierarchy (Ancestors)

Behavior, Animal; Behavior

Results Point of Contact

• Title: Corby Martin
• Organization: Pennington Biomedical Research Center

corby.martin@pbrc.edu

763-2585

Study Officials

• John W Apolzan, PhD

  Pennington Biomedical Research Center

  PRINCIPAL INVESTIGATOR

• Corby K Martin, PhD

  Pennington Biomedical Research Center

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: No
• Restrictive Agreement: No

Study Design

• Study Type: observational
• Observational Model: CASE CROSSOVER
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: PBRC Professor, Director - Ingestive Behavior Laboratory

Study Record Dates

• First Submitted: January 6, 2021
• First Posted: January 8, 2021
• Study Start: February 10, 2021
• Primary Completion: October 6, 2021
• Study Completion: December 31, 2024
• Last Updated: January 27, 2025
• Results First Posted: January 27, 2025

Record last verified: 2025-01

Locations

US (1)