Men and women may differ in how fitness level is linked to gut microbiome diversity

Aerobic fitness may be influenced by microbes in the gut, but men and women appear to show a different connection, according to a first-of-its-kind study. Researchers will present these findings at the 2026 American Physiology Summit in Minneapolis (APS 2026). The abstract is titled "Relationship Between the Gut Microbiome and Measures of Aerobic Fitness in Humans."