The present invention relates to a protein mixture and also to a food composition comprising such a mixture for feeding adult individuals, sportsmen and sportswomen, elderly individuals, or individuals requiring an improvement in their physical condition, such as individuals who are ill, bedridden, in a weak state, undernourished or suffering from sarcopenia. According to the invention, the protein mixture comprises a mixture of plant proteins and of milk proteins in a hydrolysed wheat protein/milk protein weight ratio A of between 55/45 and 20/80, wherein the milk proteins are a mixture of casein and serum proteins in a casein/serum protein weight ratio B of between 70/30 and 20/80.
