IRCT20171223038017N1 IRCT 2018-01-09 Shiraz University of Medical Sciences Effect of Yogurt Fortified with beta-Hydroxy beta-Methyl Butyrate (HMB) in Sarcopenic Elderly Evaluating the Effect of Yogurt Fortified with beta-Hydroxy beta-Methyl Butyrate (HMB), Vitamin D, and Vitamin C on Fat-Free Mass, Muscle Strength, and Physical Functionality in Sarcopenic Elderly 2017-08-06 anticipated 60 Complete https://irct.ir/trial/28377 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Supportive, Randomization description: Individuals will be classified into placebo and target groups with block randomization and Random allocation methods, Blinding description: All participants in this study are unaware about their grouping because the package, label, and appearance of the target and placebo yogurt are quite similar. Since participants are not referred based on their group to clinical follow-up and outcome evaluator and he/she is also unaware of the separation of individuals. The principle investigators are not directly connected with the participants, so they are not aware of their grouping. An importer of data will also be outside the study system, which is generally unaware of the nature of the study. 2-3 Sarcopenia. Intervention 1: Intervention group: receiving 400 grams per day of yogurt fortified with beta-hydroxy beta-butyl butyrate (HMB), vitamin D, and C for 12-week intervention that were produced by Zarrin Ghazal Industrial Co. (Daity). Intervention 2: Control group: receiving 400 grams per day of placebo yogurt for 12-week intervention that were produced by Zarrin Ghazal Industrial Co. (Daity). Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is As we prefer that only colleagues have access to the data, we have not yet decided on this.