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'Boden Food Plate': Novel Interactive Web-based Method for the Assessment of Dietary Intake
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Design and Implementation of the Protein-Distinct Macronutrient-Equivalent Diet (PRODMED) Study: An Eighteen-Week
Bruna O de Vargas1, Saba Vaezi1, Jessica L Freeling2
1School of Health and Human Sciences, South Dakota State University, Brookings, SD, United States.
Current Developments in Nutrition
|April 28, 2025
Summary
This study developed a practical method to compare meat and pulse protein in plant-forward diets for older adults. The findings offer insights into dietary protein sources and healthy eating patterns.
Area of Science:
- Nutrition Science
- Dietary Interventions
- Gerontology
Background:
- Growing interest in plant-based diets contrasts with high animal protein intake in Americans.
- Limited understanding of the biological effects of diverse protein sources in plant-forward diets.
- Underreporting of controlled-feeding methodologies for dietary impact studies.
Purpose of the Study:
- Describe menu planning and protein quality assessment for a randomized controlled feeding trial.
- Evaluate the impact of meat versus pulse protein on age-related health risk factors.
- Develop strategies for protein-distinct dietary interventions in older adults.
Main Methods:
- A 2-arm crossover randomized controlled feeding trial with 18-week duration among older adults.
- Participants consumed diets featuring either lean pork or pulses as the primary protein source (≥45% of intake).
- Macronutrient-matched, low-ultra-processed, plant-forward menus were developed for home consumption.
Main Results:
- Diets were matched for macronutrient distribution, fiber, and reduced fats, sodium, and ultra-processed foods.
- Protein densities differed between meat (261.7 mg/g) and pulse (120.6 mg/g) sources.
- Consumed energy was consistent between intervention arms, despite variations in provided energy.
Conclusions:
- The study presents a feasible and scalable method for evaluating specific protein sources within plant-forward diets.
- Interventions were well-received, indicating participant interest in healthier eating patterns.
- Findings inform future research and consumer guidance on dietary protein choices.
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