Table 3.

Ventricular dimension in rats, following 1-mo exposure to exercise and heat factors

	Control	AC	EX	EXAC
		Anatomical parameters, mm/body wt
IVST-diastolic	0.005 ± 0.0003	0.0046 ± 0.0002	0.005 ± 0.00029	0.007 ± 0.00071*†‡
IVST-systolic	0.007 ± 0.0004	0.008 ± 0.0003	0.0085 ± 0.0004*	0.01 ± 0.000857*†
LVPW-diastolic	0.006 ± 0.0010	0.007 ± 0.0008	0.008 ± 0.001012*	0.01 ± 0.001847*
LVPW-systolic	0.008 ± 0.00075	0.009 ± 0.0007	0.011 ± 0.0003*	0.012 ± 0.001*†
LVID-diastolic	0.024 ± 0.00199	0.028 ± 0.0011*	0.023 ± 0.001996	0.025 ± 0.001933
LVISd-systolic	0.0153 ± 0.00051	0.0181 ± 0.001*	0.0137 ± 0.0008‡	0.0164 ± 0.001079
		Contractile features
VCF, ms−1	5.804 ± 0.2778	4.622 ± 0.3127*	6.108 ± 0.7253	4.648 ± 0.36§
FS, %	37.16 ± 0.994	35.08 ± 1.433	39.38 ± 4.63	33.77 ± 1.67§

Values are mean ± SE. IVST, intraventricular septal thickness; LBPW, left ventricular posterior wall thickness; LVIDd, left ventricular internal diastolic diameter; LVISd, left ventricular internal systolic diameter; VCF, velocity circumferential shortening; FS, fractional shortening.

^*P < 0.05 vs. control,

^†P < 0.05 vs. AC,

^‡P < 0.05 vs. EX,

^§P < 0.05 vs. control t-test.