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Abstract

Moderate exercise has been shown to be beneficial to health in many ways,Ìýincluding reducing stress, building a stronger immune system and increasingÌýcardiovascular health. Recent studies in the human gut microbiome haveÌýdemonstrated benefits of certain microorganisms in aiding human pathogenÌýresistance and reduction of inflammation. The hypothesis is that exercise canÌýhelp modulate the human gut microbiota. Here we show that increasingÌýexercise frequency selects for a diverse community of microbes thatÌýcontribute to a healthier environment. Individuals who exercised more oftenÌýshowed a significant elevation in their diversity, as well as a significantÌýelevation of certain members of the Firmicutes phylum (includingÌýFaecalibacterium prausnitzii, uncharacterized species of genus Oscillospira,ÌýLachnospira, Coprococcus, and uncharacterized families of Clostridiales).