Fig. 3

Mean (± standard error of the mean) percentage of double-labeled cells in the dorsal raphe nucleus (a) and the hypothalamic paraventricular nucleus (b) of rats during acute treadmill running. SED sedentary controls, LSR low-speed running, HSR high-speed running, 5-HT serotonin, CRF corticotropin-releasing factor. *p < 0.05 vs. the other group for each duration of exercise; ^#p < 0.05 vs. HSR for 15 min; ^†p < 0.05 vs. HSR for 30 min