Table 2 Squeeze manometric parameters comparing 25 healthy (female x male)

Maximum incremental pressure squeeze (mmHg); short squeeze

108.7 (42.7)

102.5 [83.6;126.2]

143 (50.5)

146.3 [114.0;168.8]

<0.05

Mean pressure (mmHg); short squeeze

117.0 (40.6)

107.8 [99.6;138.0]

155.1 (39.4)

157.2 [131.6;177.6]

<0.01

Maximum absolute squeeze pressure (mmHg); short squeeze

169.9 (44.0)

168.5 [142.8;183.5]

205.7 (45.2)

211.6 [180.0;239.6]

<0.01

Fatigue rate (mmHg); long squeeze

-74.9 (46.4)

-69.8 [-91.8; -47.5]

-60.5 (77.5)

-71.3 [-95.4; -13.8]

0.64

Fatigue rate index (min); long squeeze

1.6 (2.2)

0.8 [0.6;1.5]

2.0 (4.2)

1.0 [0.7;1.5]

0.42

Capacity to sustain (%); long squeeze

71.60 (14.8)

73.4 [61.0;80.0]

79.80 (22.1)

74.2 [66.9;93.6]

0.24

Short squeeze PV (10⁴mmHg².cm)

21.0 (13.1)

18.8 [13.5;23.9]

36.2 (16.4)

30.9 [26.0;49.9]

<0.01

Highest-pressure asymmetry (%); short squeeze

15.8 (5.6)

16.0 [10.6;18.1]

14.1 (4.9)

13.5 [10.4;17.2]

0.27

Lowest pressure asymmetry (%); short squeeze

18.8 (9.2)

17.2 [11.4;23.3]

12.9 (4.5)

12.6 [9.7;15.1]

<0.05

Long squeeze PV (1/3) 10⁴mmHg².cm

11.8 (7.9)

9.9 [7.7;13.7]

19.0 (10.5)

15.4 [12.3;24.8]

<0.01

Long squeeze PV (2/3) 10⁴mmHg².cm

9.9 (7.2)

7.7 [4.4;13.1]

16.4 (10.5)

12.2 [9.1;24.7]]

<0.01

Long squeeze PV (3/3) 10⁴mmHg².cm

11.8 (18.5)

7.2 [4.0;11.3]

15.1 (10.7)

11.0 [9.1;20.5]

<0.05