Phosphorus ingestion with a high-carbohydrate meal increased the postprandial energy expenditure of obese and lean individuals
2019
Assaad, Mariam A. | El-Mallah, Carla A. | Obeid, Omar Ahmad | Department of Nutrition and Food Sciences | Faculty of Agricultural and Food Sciences (FAFS) | American University of Beirut
Objectives: Phosphorus ingestion with glucose was reported to stimulate the postprandial peripheral uptake of both phosphorus and glucose, a process that favors energy production. The aim of this study was to determine whether phosphorus ingestion with a meal can affect energy metabolism. Methods: Overnight fasted men (eight lean and seven obese) consumed a high-carbohydrate meal (648 kcal) with either placebo or phosphorus (500 mg) tablets in a random order. Energy expenditure and substrate oxidation were monitored for 240 min using ventilated hood indirect calorimetry. Results: Phosphorus ingestion with a meal increased the postprandial energy expenditure of both lean and obese individuals (P < 0.001), although in different patterns. Alterations in postprandial substrate oxidation was highly noticeable from time 120 min onward, where phosphorus-treated lean participants exhibited a significant decrease in respiratory quotient. Conclusion: Phosphorus ingestion with a high-carbohydrate meal alters postprandial energy metabolism mainly by enhancing postprandial energy expenditure that may ultimatly favor weight loss. © 2019 Elsevier Ltd
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