Fig 5. The results for the main phyla and genera found in the stool samples, with relative abundances equal to or greater than 1%.

(A) Samples collected in each group: E: exercised, Car: exercised and supplemented with L-carnitine, Chr: exercised and supplemented with chromium. 1–0: Immediately before the first incremental test, 1–48: 48 h after the first incremental test, 2–0: immediately before the second incremental test, 2–48: 48 h after the second incremental test. (B) Samples collected in each group: E: exercised, Car: exercised and supplemented with L-carnitine, Chr: exercised and supplemented with chromium. 1–0: Immediately before the first incremental test, 1–48: 48 h after the first incremental test, 2–0: immediately before the second incremental test, 2–48: 48 h after the second incremental test.