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Table 6 Long notes – rectus abdominis activity (% maximum activity, mean ± s.e.m. n = 20)

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

Stand start Sit flat Sit slope down Slope back Stand end
75.4 ± 6.3% 42.0 ± 4.3% 43.4 ± 4.8% 44.2 ± 5.0% 71.7 ± 6.0%
Probability Stand end Sit flat Sit slope down Slope back
Stand start 0.189 <0.001 <0.001 <0.001
Sit flat <0.001 - 0.061 0.221
Sit slope down <0.001 0.061 - 0.347
Slope back <0.001    
  1. Probabilities of <0.05 are in bold type.