The PortionSize Smartphone App Pilot (PS Pilot)

NCT04494971 | Completed Results

• 1 other identifier: PBRC 2019-013
• Study Type: observational
• Target: 15
• Locations: 1 country
• Sites: 1

Brief Summary

The objective is to examine the preliminary validity, reliability and perceived participant satisfaction of the PortionSize app.

Conditions

Dietary Habits

Outcome Measures

Primary Outcomes (2)

• Validity of Portion Size at Estimating Energy Intake in Laboratory Conditions

  Compared measurements from PortionSize to weighed values in the laboratory, which is the criterion measure.

  1 simulated meal collected on one day

• Validity of Portion Size at Estimating Energy Intake in Free-living Conditions

  Quantify the validity of the app measurements in free-living conditions compared to digital photography (the criterion measure).

  Mean kcal intake over 3 days

Eligibility Criteria

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

Study Population

Healthy participants ages 18 to 65 in the Baton Rouge, LA area.

You may qualify if:

• BMI 18.5-45 kg/m2 based upon self-reported height and weight
• Have an iPhone and an operable Apple ID, password, and email address and is willing to use these to collect data during the study, acknowledging that data usage, and associated charges, are a result of study participation

You may not qualify if:

• For females, pregnancy or breast feeding
• Currently diagnosed with an eating disorder
• Disease that severely affects metabolism, including diabetes, hypercholesterolemia, or dyslipidemia
• Has gained or lost more than 10 lbs in the last 3 months
• PBRC faculty/staff member
• Has suffered serious mental illness that has resulted in serious functional impairment and has substantially interfered with one's life activities within the last 5 years
• Any other medical, psychiatric, or behavioral factors in the judgment of the Principle Investigator that may interfere with study participation or the ability to follow the protocol

Sponsors & Collaborators

• Pennington Biomedical Research Center: lead

Study Sites (1)

Pennington Biomedical Research Center

Baton Rouge, Louisiana, 70808, United States

Location

Related Publications (1)

• Diktas HE, Lozano CP, Saha S, Broyles ST, Martin CK, Apolzan JW. Evaluating the Validity of the PortionSize Smartphone Application for Estimating Dietary Intake in Free-Living Conditions: A Pilot Study. J Nutr Educ Behav. 2024 Sep;56(9):643-652. doi: 10.1016/j.jneb.2024.05.226. Epub 2024 Jun 18.

  PMID: 38888538 DERIVED

MeSH Terms

Conditions

Feeding Behavior

Condition Hierarchy (Ancestors)

Behavior, Animal; Behavior

Results Point of Contact

• Title: Dr. Hanim Ecem Diktas
• Organization: Pennington Biomedical Research Center

hanim.diktas@pbrc.edu

(225) 763-2832

Study Officials

• John Apolzan, PhD

  Pennington Biomedical Research Center

  PRINCIPAL INVESTIGATOR

• James Dorling, PhD

  Pennington Biomedical Research Center

  PRINCIPAL INVESTIGATOR

• Corby Martin, PhD

  Pennington Biomedical Research Center

  PRINCIPAL INVESTIGATOR

Publication Agreements

• PI is Sponsor Employee: Yes

Study Design

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

Study Record Dates

• First Submitted: July 28, 2020
• First Posted: July 31, 2020
• Study Start: August 31, 2020
• Primary Completion: November 20, 2020
• Study Completion: November 20, 2020
• Last Updated: November 19, 2024
• Results First Posted: October 15, 2024

Record last verified: 2024-10

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)