The effects of milk proteins on the regulation of short-term food intake and appetite in young men

Abstract

The hypothesis tested was that milk proteins differ in their capacity to suppress subjective appetite and short-term food intake in young men and these differences associate with their effect on plasma amino acid, glucose and insulin concentrations. Two experiments were conducted. Casein, whey and complete milk protein were given at 0.7g protein/kg weight. Subjective appetite was measured and blood samples collected for analysis of amino acid, glucose and insulin concentrations until pizza meals were provided at 90 (Exp1) or 150 min (Exp2). It is concluded that milk proteins suppress short-term food intake and they differ in their capacity to do so over time. Protein treatments decreased test meal intake at both 90 and 150 min. Food intake was similar among protein treatments at 90 min, but at 150 min casein suppressed food intake more than whey. Food intake was not associated with subjective appetite, amino acid, glucose or insulin concentrations.