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Table 2 Thickness changes by 10N force in the anterior thigh

From: Prediction of the muscle strength by the muscle thickness and hardness using ultrasound muscle hardness meter

Variables

Male

Female

Significance

Thickness without force (mm)

   

 Subcutaneous fat (F)

6.8 ± 1.8

11.4 ± 2.4

p<0.01

 Rectus femoris muscle (R)

19.4 ± 3.2

16.6 ± 3.9

p<0.01

 Vastus intermedius muscle (V)

17.2 ± 3.2

14.4 ± 3.6

p<0.01

 Whole muscle (R+V)

36.6 ± 5.6

31.0 ± 6.3

p<0.01

 Whole tissue (F+R+V)

43.4 ± 5.9

42.4 ± 6.8

n.s.

Thickness with 10N force (mm)

   

 Subcutaneous fat (F)

6.4 ± 1.6

10.5 ± 2.1

p<0.01

 Rectus femoris muscle (R)

13.3 ± 3.0

10.8 ± 3.2

p<0.01

 Vastus intermedius muscle (V)

14.0 ± 2.7

11.0 ± 2.4

p<0.01

 Whole muscle (R+V)

27.3 ± 4.9

21.8 ± 4.5

p<0.01

 Whole tissue (F+R+V)

33.7 ± 5.2

32.3 ± 5.0

n.s.

Compression ratio (%) 1)

   

 Subcutaneous fat (F)

95.5 ± 2.4

92.8 ± 3.6

p<0.01

 Rectus femoris muscle (R)

67.7 ± 6.2

64.2 ± 6.1

p<0.01

 Vastus intermedius muscle (V)

81.7 ± 5.0

77.3 ± 7.2

p<0.01

 Whole muscle (R+V)

74.3 ± 3.6

70.4 ± 3.8

p<0.01

 Whole tissue (F+R+V)

77.6 ± 3.0

76.4 ± 2.9

p<0.1

  1. 1) The changing ratios of the tissue thickness before compression to those during compression.