Research Article

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).
901239.fig.003a
(a)
901239.fig.003b
(b)
901239.fig.003c
(c)
901239.fig.003d
(d)