The present invention provides a novel combination for improving frailty or a novel combination for suppressing reduction in skeletal muscle mass. More specifically, the present invention provides a combination for improving frailty or a combination for suppressing reduction in skeletal muscle mass, said combination comprising milk proteins, zinc and vitamin D.本發明係提供新穎的改善虛弱用之組合物或改善骨骼肌量減少用之組合物。更詳細而言,本發明係提供包含乳蛋白質、鋅、及維生素D之改善虛弱用之組合物或改善骨骼肌量減少用之組合物。