As for this invention the aforementioned constituent includes branching chain amino acid in regard to the constituent which is used in order to raise the stability of the joint or the stability of physical condition. This invention furthermore the food supplement or the joint and/or prevention of instability of physical condition and/or regards the use of the branching chain amino acid for preparing the medicine for remedy.本発明は関節の安定性又は体位の安定性を高めるために使用される組成物に関し、前記組成物は分枝鎖アミノ酸を含む。本発明はさらに、食物サプリメント又は関節及び/又は体位の不安定性の予防及び/又は治療用医薬の調製のための分枝鎖アミノ酸の使用に関する。