Table 1.

Summary of experimental groups

				Labeling
Rat ID	N	Speed (cm/s)	One-bout step duration (min)	FOS	HSP-27	Adjacent	Double IF
Nstp	4	—	0	X
Stp	16	13.5	—
	3	13.5	6	X
	3	13.5	23	X
	3	13.5	35	X
	3	13.5	45	X
	4	13.5	60	X	X	X	X

Nstp, nonstepped (cage activity) rats; Stp, treadmill-stepped rats; n, number of animals per group; adjacent, each trial was performed on two sections chosen adjacently and one section treated with c-fos the other treated with HSP-27; double IF, sections were stained with both c-fos and HSP-27 antibody using the IF method