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- Title
Effect of a plant protein‐rich diet on postprandial phosphate metabolism in healthy adult men: a randomised controlled trial.
- Authors
Uenishi, Kozue; Kawasaki, Nozomi; Iseki, Haruka; Nogata, Misato; Kawabata, Yuki; Kido, Shinsuke
- Abstract
Background: This study examined the effects of animal protein‐ and plant protein‐rich diets on postprandial phosphorus metabolism in healthy male subjects. Methods: The study was conducted by randomised parallel‐group comparison of healthy men aged 21–24 years. In Study 1, participants were divided into two groups and consumed either a 70% animal protein diet (AD, n = 6) or a 70% plant protein diet (PD, n = 6). In Study 2, participants were divided into three groups and consumed either AD (n = 10), PD (n = 10) or AD + DF, a 70% animal protein diet loaded with the same amount of fibre as PD (n = 9). The phosphorus contents of the diets used in this study were nearly equivalent (AD, 710.1 mg; PD, 709.7 mg; AD + DF, 708.9 mg). Blood and urine samples were collected before, and 2 and 4 h after the meal to measure phosphorus and calcium levels. Results: In Study 1, PD consumption resulted in lower blood and urinary phosphorus concentrations 2 h postprandially compared with AD (p < 0.05). In Study 2, blood phosphorus levels in AD + DF after the diet remained lower, but not significantly so compared with AD, and urinary phosphorus levels were significantly lower 2 h postprandially (p < 0.05). Conclusions: A plant protein‐rich diet reduced rapid postprandial increases in blood and urinary phosphorus concentrations compared with the animal protein‐rich diets, suggesting that dietary fibre may play a partial role in the postprandial decreases in blood and urinary phosphorus concentrations. Key points: The key points of this study are that a plant protein‐rich diet reduces the rapid increase in the blood and urinary phosphorus concentration after eating and that dietary fibre may contribute to this reduction.
- Subjects
PLANT protein metabolism; PHOSPHATE metabolism; MEN; FOOD consumption; PHOSPHORUS; STATISTICAL sampling; FOOD animals; RANDOMIZED controlled trials; CALCIUM; DIETARY fiber; DIETARY proteins
- Publication
Journal of Human Nutrition & Dietetics, 2024, Vol 37, Issue 3, p762
- ISSN
0952-3871
- Publication type
Article
- DOI
10.1111/jhn.13299