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Table 2 Maximal inspiratory and expiratory static pressures at different lung volumes for the female subjects.

From: Maximum static inspiratory and expiratory pressures with different lung volumes

Expiratory

Pressure

Inspiratory

Pressure

Volume (%VC)

Positive Pressure (cmH2O)

Pe/Pmax

Volume (%VC)

Negative Pressure (cmH2O)

Pi/Pmax

8.9 ± 0.7

38.7 ± 25.0

0.5864

12.1 ± 0.9

65.9 ± 31.6

0.9985

18.4 ± 1.0

44.2 ± 25.9

0.6697

22.5 ± 1.3

65.0 ± 31.6

0.9848

27.6 ± 1.3

53.4 ± 30.7

0.8091

33.0 ± 1.8

59.6 ± 32.0

0.9030

37.3 ± 1.5

53.7 ± 28.8

0.8136

43.3 ± 2.0

55.0 ± 32.0

0.8333

46.8 ± 1.9

53.3 ± 28.9

0.8076

53.5 ± 2.2

53.0 ± 32.9

0.8030

56.2 ± 2.2

55.4 ± 29.6

0.8394

63.8 ± 2.6

47.6 ± 28.3

0.7212

65.7 ± 2.6

57.3 ± 33.2

0.8682

73.6 ± 2.6

42.3 ± 28.6

0.6409

74.7 ± 3.2

61.7 ± 38.5

0.9398

83.1 ± 2.7

34.2 ± 27.4

0.5182

84.4 ± 3.2

61.2 ± 39.0

0.9273

92.6 ± 2.4

28.0 ± 29.0

0.4242

  1. Volumes are expressed in percent of vital capacity at ambient pressure. All values are shown with standard deviations. Pmax for females was determined to be 66 cmH2O.