Effect of Regular Physical Exercise on Gut Microbiota and Depressive Behaviors in Rats

Figure 4

Principal component analysis (PCA) of fecal microbiota in four groups of rats. There are 10 rats in each group. G1, normal group; G2, chronic unpredictable mild stress used to develop depression-like behavior in rats; G3, fluoxetine was given 3 mg/kg daily by gavage after the formation of depression-like behavior; G4, the depressed model rats exercised for 1 hour at 9 am and 3 pm each day.