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Figure 5 | SpringerPlus

Figure 5

From: The effect of standing and sitting postures on breathing in brass players

Figure 5

A comparison of the level of abdominal muscle activity and movement of the chest and abdominal wall during performance of a trumpet study in different postures by a student player. The electromyographic signals from both the external oblique and rectus abdominis are markedly lower when sitting on a flat seat or downward sloping seat than when standing. A.U. arbitrary units.

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