Figure 2
From: Exposure to wood smoke increases arterial stiffness and decreases heart rate variability in humans
Heart rate variability recordings in 10 min intervals 0-60 minutes post exposure. Compared to filtered air, wood smoke exposure decreased the HF domain (p = 0.009), and a small decrease was seen in the LF domain (p = 0.086). All the time domain recordings were reduced following wood smoke exposure as compared to filtered air; SDNN (p = 0.003), RMSSD (p < 0.001) and pNN50 (p < 0.001). All data expressed as mean ± standard error of the mean and P-values from 2-way ANOVA with repeated measures.