Muscle mass increasing agent and endurance improving agent

Abstract

An amber extract has been found to have a motor function improving effect, a muscle mass increasing effect, a muscle strength reinforcing effect, an energy production promoting effect, an endurance improving effect, and an anti-fatigue effect. An agent, specifically, a food or drink, a supplement, a pharmaceutical composition, or the like, comprising the amber extract as an active ingredient can produce these effects. The agent comprising the amber extract as an active ingredient can provide a composition that can increase or reinforce a muscle mass and muscle strength, further improve a motor function and endurance, and prevent fatigue.

Dependencies are inferred from the claim text.