Protein Intake on Muscle Protein Synthesis Overnight

Inclusion Criteria: * Male * Healthy as determined by the medical questionnaire and the medical visit including blood sampling * 55-65y of age * BMI (19.0 - 25.0 kg/ m²) * Having signed the consent form Exclusion Criteria: * Digestive (intestinal, gastric, hepatic or pancreatic), renal or metabolic disease, as determined by the medical (screening) visit and a blood chemistry analysis (glucose, total cholesterol, LDL, HDL, triglycerides, aspartate transaminase, alanine aminotransferase, gamma glutamyl transpeptidase, C Reactive Protein, creatinin) * Heart or other organ disease * Arterial hypertension (Systolic pressure ≥ 140 mmHg or diastolic pressure ≥ 90 mmHg) * Any clotting trouble (diagnosed by Prothrombin time (PT), activated Partial Thromboplastin Time (aPTT), fibrinogen measures and platelets number (the latter is part of a classical blood cells counting at screening) * Any inflammatory disease in the past four weeks * Use of specific medications * Recent major surgery (3 months) * History of major gastro-intestinal surgery (gastric bypass, intestinal resection etc…) * History of cancer within the past year * Significant weight loss during the last 3 months (5% and more) * Food allergies, especially cow milk protein allergies * Special diets especially vegetarian, high protein or weight loss program (anamnesis) * Smokers * High level structured exercise 3 times a week (e.g.: fitness club, competitions…) * Have a high alcohol consumption (more than 2 drinks/day) * Consumption of illicit drugs anamnesis only * Having given blood within the last month, or willing to make a blood donation until one month following the end of the study * Subject who cannot be expected to comply with the study procedures, including consuming the test products. * Currently participating or having participated in another clinical trial during the last month prior to the beginning of this study