Psychological Mechanisms Linking Food Insecurity and Obesity

Obesity Clinical Trial

Official title:

Psychological Mechanisms Linking Food Insecurity and Obesity (Food Mind Pilot Study)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03441594
• Other study ID #: 2017-060-PBRC
• Secondary ID: U54GM104940
• Status: Completed
• Start date: February 5, 2018
• Est. completion date: December 31, 2019

Study information

• Verified date: January 2020
• Source: Pennington Biomedical Research Center
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

The current pilot study will examine emergent hypotheses by investigating the role of psychological mechanisms in the relationship between food insecurity and obesity. This objective will be achieved via a cross-sectional, observational pilot study collecting quantitative and qualitative data.

Description:

This pilot study will investigate an emergent risk factor for obesity: food insecurity, which is defined as the limited or uncertain availability of nutritionally adequate and safe foods. While paradoxically linked, numerous studies have shown a significant association between food insecurity and obesity. Moreover, recent narrative works have developed new, untested hypotheses linking food insecurity and obesity positing the causal role of psychological mechanisms. Given this, this mixed method pilot study will collect new psychological data in a sample of food secure and food insecure adults with and without obesity to examine the connections between food insecurity, body weight, and psychological constructs. The overarching objective of the study is to gather pilot data to identify potentially new intervention targets that will be used in future studies to more rigorously investigate the relationship between food insecurity and obesity.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 56
• Est. completion date: December 31, 2019
• Est. primary completion date: May 28, 2018
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 49 Years

Eligibility

Inclusion Criteria:

• Age 18-49 years

• BMI = 20.0 kg/m2

• Able to read and write using the English language

• Willing to provide written informed consent

Exclusion Criteria:

• Pregnancy

Related Conditions & MeSH terms

• Obesity
• Psychological

Locations

Country	Name	City	State
United States	Pennington Biomedical Research Center	Baton Rouge	Louisiana

Sponsors (2)

Lead Sponsor	Collaborator
Pennington Biomedical Research Center	National Institute of General Medical Sciences (NIGMS)

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Delay Discounting	Assessed via the 27-Item Monetary Choice Questionnaire, which measures bias toward smaller, immediate rewards versus larger, delayed rewards. This questionnaire presents participants with a set of 27 choices between smaller, immediate monetary rewards and larger, delayed monetary rewards. Participants who discount the value of the delayed rewards more steeply are considered to be more impulsive. An estimate of a participant's discounting rate (k) is calculated from the pattern of choices. Values of k range from 0.00016 (ln transformation -8.74) to 0.25 (ln transformation -1.39), with higher values indicating a greater preference for smaller, immediate rewards over larger, delayed rewards. K tends to be skewed, so a natural log (ln) transformation is utilized to approximate a normal distribution for statistical analyses.	Through study completion, an average of 1 hour and 30 minutes at Study Visit 1
Secondary	Grit	Assessed using the 8-item Short Grit Scale, which measures trait-level perseverance and passion for long-term goals. Scores range from 1 (not at all gritty) to 5 (extremely gritty).	Through study completion, an average of 1 hour and 30 minutes at Study Visit 1