Table 1.

Functional and morphological data assessed by echocardiography.

	Wistar sed.		Wistar running		SHR sed.		SHR running
	3 mo.	6 mo.	3 mo.	6 mo.	3 mo.	6 mo.	3 mo.	6 mo.
FS (%)	0.36 ± 0.01	0.35 ± 0.04	0.35 ± 0.01	0.39 ± 0.02#	0.32 ± 0.02	0.28 ± 0.01*	0.36 ± 0.03*	0.36 ± 0.05*
EF (Teich,%)	0.71 ± 0.01	0.70 ± 0.06	0.71 ± 0.01	0.76 ± 0.03#	0.65 ± 0.03	0.61 ± 0.02*	0.71 ± 0.04	0.72 ± 0.02*
MV E/A	1.55 ± 0.10	1.58 ± 0.14	1.63 ± 0.04	1.65 ± 0.15	1.63 ± 0.18	1.63 ± 0.12	1.66 ± 0.12	2.10 ± 0.14*#
IVSd (mm)	0.88 ± 0.13	0.91 ± 0.14	0.99 ± 0.20	0.90 ± 0.20	0.75 ± 0.08	0.74 ± 0.03	0.78 ± 0.07	0.88 ± 0.06*#
LVPWd(mm)	1.00 ± 0.10	0.94 ± 0.09	1.09 ± 0.08	0.94 ± 0.08#	0.95 ± 0.09	0.92 ± 0.07	1.05 ± 0.14	1.10 ± 0.18*
LVPWs(mm)	1.43 ± 0.18	1.52 ± 0.24	1.47 ± 0.14	1.64 ± 0.15	1.25 ± 0.11	1.16 ± 0.14	1.64 ± 0.25*	1.82 ± 0.31*
LVIDd (mm)	6.51 ± 0.50	6.23 ± 0.51	6.47 ± 0.24	6.14 ± 0.27	6.61 ± 0.20	6.78 ± 0.16	7.47 ± 0.33*	7.66 ± 0.23*
LVIDs (mm)	4.16 ± 0.35	4.08 ± 0.50	4.13 ± 0.09	3.79 ± 0.31	4.58 ± 0.22	4.85 ± 0.18	4.82 ± 0.33	4.98 ± 0.47

FS (%): fractional shortening, EF (Teich,%): ejection fraction, MV E/A ratio: relationship between the E and A waves, IVSd (mm): end-diastolic interventricular septum thickness, LVPWd (mm): left ventricular posterior wall thickness in diastole, LVPWs (mm): left ventricular posterior wall thickness in systole, LVIDd (mm): left ventricular internal diameter in diastole, LVIDs (mm): left ventricular internal diameter in systole. Data are means ± S.D. of n = 6 animals. Wistar/SHR sed.:

^*p < 0.05 vs. 3 mo. sed., Wistar/SHR running: ^*p < 0.05 vs. sed.,

^#p < 0.05 vs. 3 mo. running.