MARATHON PACE, START TO FINISHPlacebo−14.2%Probiotic−7.9%1ST THIRD2ND THIRDLAST THIRDSTART PACE44% less slowdownin the last third of the marathonMARATHON PACEPlacebo−14.2%Probiotic−7.9%1ST THIRD2ND THIRDLAST THIRDSTART PACE44% less slowdownin the last third of the marathon