PROBLEM TO BE SOLVED: To provide a muscle amount reduction inhibitor to suppress reduction of muscle amount caused by dietary restriction.SOLUTION: The muscle amount reduction inhibitor contains isomaltulose as an active component. The muscle amount reduction inhibitor is used for suppressing the reduction of muscle amount caused by dietary restriction.COPYRIGHT: (C)2010,JPO&INPIT【課題】 食事制限による筋肉量の低下を抑制する筋肉量低下抑制剤を提供する。【解決手段】 イソマルツロースを有効成分とする筋肉量低下抑制剤。【選択図】なし