From: Low cardiac output as physiological phenomenon in hibernating, free-ranging Scandinavian brown bears (Ursus arctos) – an observational study
Active state
Hibernating state
P-value
Ejection time (ms)
200 (±18.6)
256 (±16.9)
0.005
Diastolic filling time (ms)
571 (±103)
2217 (±858)
0.02
IVRT + IVCT (ms)
363 (±30)
583 (±61)
0.006
Tei index
0.77 (±0.10)
1.28 (±0.29)
0.07