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Table 12 Studies - muscle activity at Sit flat and Sit slope down measured as the area under the trace (RMS) expressed as a percentage of the level seen during standing (n = 8)

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

  External obl. Sit slope down External obl. Sit flat Rectus abd. Sit slope down Rectus abd. Sit flat
Mean ± s.e.m. 68 ± 5.7% 60 ± 6.3% 68 ± 4.6% 61 ± 5.0%
Probability <0.001 0.002 0.003 0.003
  1. Probabilities of <0.05 are in bold type.