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. 2017 Mar 27;7:45301. doi: 10.1038/srep45301

Figure 4. Comparison of EMG ↔ SBP causality (mean ± SD) between two population groups.

Figure 4

In elderly group (red) the strength of EMG → SBP causality declined significantly (p = 0.002) while SBP → EMG causality did not change (p = 0.37) compared to young group (black). *Represents significant difference at α = 0.01.