Postprandial energy expenditure of protein is affected by its phosphorus content

This study aimed at assessing the effect of P in PEE of normal and high protein meals. A single-blind randomized crossover study was conducted with two groups of 12 healthy lean male subjects who received iso-caloric (554 Kcal) meals. Group1: normal protein (NPr) meal with or without P (500 mg) and group 2: high protein (HPr) meal with or without P (500 mg), on two visits separated by a minimum of 1-week washout period. Energy expenditure and substrate oxidation were measured at baseline and every 30 min for 4 hours after meal ingestion using a ventilated hood for indirect calorimetry. NPr and HPr meals had similar postprandial energy expenditure and this was significantly increased (P=0.005) by P ingestion. Our work shows that PEE of protein meal is highly affected by P content of the meal.
Source: Journal of Thermal Biology - Category: Biology Source Type: research