Table 2.

Main electrophysiological parameters at VFRP vs. temperature for WH and SA ground squirrel and rabbit hearts

Parameters	Species	37°C	27°C	17°C
VFRP (ms)	Rabbit	162 ± 2**	257 ± 16*	515 ± 29**
	SA	114 ± 4	190 ± 8	331 ± 15
	WH	124 ± 6	209 ± 14	436 ± 22
CVL (cm/s)	Rabbit	47.5 ± 2.2*	29.2 ± 2.3*	9.4 ± 0.7**
	SA	50.8 ± 3.0*	38.5 ± 2.1	17.8 ± 1.8
	WH	56 ± 0.7	37.6 ± 1.5	19.0 ± 1.4
CVT (cm/s)	Rabbit	19.8 ± 1.3*	10.8 ± 0.8**	2.8 ± 0.3**
	SA	23.3 ± 1.8	15.8 ± 0.8	6.5 ± 0.3*
	WH	25.4 ± 0.6	16.6 ± 0.7	8.9 ± 0.7
WLL (cm/s)	Rabbit	7.7 ± 0.3*	7.5 ± 0.8	4.9 ± 0.5**,#
	SA	5.6 ± 0.7	7.4 ± 0.6#	6.1 ± 0.6*
	WH	6.5 ± 0.3	8.0 ± 0.8#	8.7 ± 0.9#
WLT (cm/s)	Rabbit	3.2 ± 0.2	2.8 ± 0.3*	1.5 ± 0.2**,#
	SA	2.6 ± 0.4	2.9 ± 0.3*	2.2 ± 0.1**,#
	WH	3.0 ± 0.2	3.5 ± 0.3	4.1 ± 0.4#
Anisotropy	Rabbit	2.41 ± 0.06*	2.69 ± 0.09**,#	3.37 ± 0.13**,#
	SA	2.19 ± 0.06	2.49 ± 0.11#	2.72 ± 0.22**,#
	WH	2.21 ± 0.03	2.26 ± 0.04	2.14 ± 0.03

Rabbit (n = 6); SA = summer active (n = 8); WH = winter hibernating (n = 7); Group data are represented as mean ± SEM.

^*- p < 0.05

^**-p < 0.01 vs WH

^#- p < 0.05 vs 37C for the same species.