Inclusion and exclusion criteria
pacemaker)Allergy
In order to be eligible to participate in this study, patients will have to meet the IFSO criteria. Also, written informed consent must be obtained.Patients will be excluded from participation in this study, when they meet one of the following criteria:Revisional bariatric surgeryA protein-restricted diet for medical reasonsDiagnosis of a (neuro-) muscular diseaseInability to undergo MF-BIA (i.e., pregnancy, pacemaker)Allergy to any of the ingredients of either the protein or the placebo shake