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Reliability and validity of a macronutrient self-selection paradigm and a food preference questionnaire
P J Geiselman1, A M Anderson, M L Dowdy
1Pennington Biomedical Research Center, Louisiana State University, Baton Rouge 70808-4124, USA. geiselpj@mhs.pbrc.edu
Physiology & Behavior
|June 9, 1998
Summary
Researchers developed reliable tools to study dietary fat intake and preferences. The macronutrient self-selection paradigm (MSSP) and food preference questionnaire (FPQ) accurately measure fat consumption and choices, aiding obesity research.
Area of Science:
- Nutrition Science
- Behavioral Science
Background:
- Dietary fat intake is a significant factor in obesity.
- Understanding individual variations in fat consumption and preference is crucial for targeted interventions.
- Existing methods for assessing dietary fat intake may have limitations in reliability and validity.
Purpose of the Study:
- To develop and validate novel laboratory tools for assessing dietary fat intake and preferences.
- To evaluate the test-retest reliability and validity of the macronutrient self-selection paradigm (MSSP) and food preference questionnaire (FPQ).
- To assess the capacity of these tools to capture a wide range of fat intake and preferences.
Main Methods:
- Development of a macronutrient self-selection paradigm (MSSP) with variable fat content.
- Development of a food preference questionnaire (FPQ) using a similar design.
- Testing male subjects twice on both instruments with a 4-week interval.
- Assessing test-retest reliability using correlation coefficients (r).
- Validating MSSP and FPQ against habitual intake reported on the Block food questionnaire (FQ).
Main Results:
- The MSSP demonstrated strong test-retest reliability for fat intake (r = 0.91) and total caloric intake.
- Fat preferences (r = 0.99) and hedonic responses on the FPQ were highly consistent.
- The MSSP was validated against habitual fat intake (r = 0.80) and total carbohydrate intake.
- FPQ fat preferences correlated well with MSSP fat intake (r = 0.86) and Block FQ fat intake (r = 0.83).
- The MSSP detected a wide range of fat intake (3.06-50.35%) and caloric intake.
Conclusions:
- The MSSP and FPQ are reliable and valid instruments for assessing dietary fat intake and preferences.
- These tools can identify individuals with distinct fat intake patterns and detect changes within subjects.
- The developed laboratory tools can advance the understanding of the relationship between dietary fat and obesity.