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. 2018 Jan;110(1):74–83. doi: 10.5935/abc.20180003

Figure 8.

Figure 8

Comparison of electromyographic activity of all muscles between the Active Standing Test (white) and the Head-Up Tilt Test (grey) during the Pre- Valsalva maneuver (VM) (1), VM (2) and post-VM (3).🟄: p < 0.05.