The Influence of Nrf2 on Cardiac Responses to Environmental Stressors
Figure 3
(a) Hourly mean heart rate (HR, bpm) responses in and mice during hyperoxia (100% oxygen) exposure. Heart rates in mice were significantly reduced from baseline from 34 hr until the end of exposure (). Heart rates in mice were significantly reduced from baseline from 54 hr until the end of exposure (). (b) Hourly mean low frequency (LF) heart rate variability (HRV, (ms2/Hz) responses in and during hyperoxia (100% oxygen) exposure. LF HRV reduced in versus after 40 hr of exposure (). LF HRV in mice did not change significantly (). (c) Hourly mean high frequency (HF) heart rate variability (HRV, ms2/Hz) responses in and during hyperoxia (100% oxygen) exposure. HF HRV reduced significantly in versus at 35 and 36 hrs of exposure (). (d) Hourly mean total power heart rate variability (TP HRV, ms2/Hz) responses in and during hyperoxia (100% oxygen) exposure. TP HRV reduced in versus after 43 hr to the end of the exposure (). Group means ± SEM are presented (/group).