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. 2006 Jun 29;575(Pt 3):961–970. doi: 10.1113/jphysiol.2006.114660

Figure 3. The effect of intermittent hypoxia (IH) on the percent change in muscle sympathetic nervous activity (MSNA) (n = 6).

Figure 3

Values represent 5 min segments for pre-IH (open bars) and post-IH (filled bars). A, burst frequency increased significantly over time and remained elevated after the hypoxic exposure, and was significantly higher post-IH. B, amplitude increased significantly over time and remained elevated after the 20 min hypoxic exposure; however, no significant difference between pre- and post-IH was observed. C, total MSNA increased significantly over time and remained elevated after the hypoxic exposure. There was a trend for total MSNA to be higher post-IH (P = 0.06). *Significantly different from baseline (P < 0.05). †Significantly different from pre-IH (P < 0.05).