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Ambulatory activity during the dark 12-h period for rats under sedentary (Sed), forced (fRW), and voluntary (vRW) exercise conditions. Insert indicates fRW speed for sham and fluid percussion injured (FPI) rats (A). FPI rats had less activity counts during the light 12-h period (B). Activity counts were lower in the fRW group during the light period (C). Each value represents the mean number of activity counts in a 1-h sampling interval±standard error of the mean. *p<0.05.
