Polyphenols in Exercise Performance and Prevention of Exercise-Induced Muscle Damage

Figure 1

Quercetin structure. Quercetin (3,5,7,3′,4′-pentahydroxyflavone) is a typical flavonol-type flavonoid and forms the backbone for many other flavonoids. Flavonoids are characterized by 2 benzene rings connected by an oxygen-containing pyrene ring.