PROBLEM TO BE SOLVED: To provide a TGR5 activator and further provide an endurance-improving agent, a fatigue reducing agent, a muscle strength improver and a motor function improver.SOLUTION: A TGR5 activator comprises at least one selected from Lagerstroemia speciosa leaf extract, Perilla frutescens var. crispa extract, Gingerol, Zingiber officinale var. rubra extract, and Vitex agnus castus extract as active ingredients.【課題】ＴＧＲ５活性化剤、更には持久力向上剤、疲労抑制剤、筋力向上剤及び運動機能向上剤の提供。【解決手段】バナバ葉抽出物、赤シソ抽出物、ジンゲロール、赤ショウガ抽出物、チェストツリー抽出物より選択される少なくとも１つを有効成分とするＴＧＲ５活性化剤。【選択図】なし
