Table 4 Average parameters of twitch and tetanus of EDL and soleus muscles

Peak (mN/mm²)

Single twitch

0.72 ± 0.09

0.52 ± 0.10

0.68 ± 0.11

0.93 ± 0.13*

0.98 ± 0.08*

1.06 ± 0.15*

0.82 ± 0.13

1.04 ± 0.20*

0.96 ± 0.08*

1.26 ± 0.12*

Tetanus

2.55 ± 0.39

2.72 ± 0.41

2.81 ± 0.09

5.72 ± 0.73*

3.81 ± 0.46*

6.46 ± 0.90*

3.29 ± 0.44

5.36 ± 1.31*

3.97 ± 0.56*

7.12 ± 0.37*

Time to peak (ms)

Single twitch

26.7 ± 2.0

63.5 ± 4.1

28.9 ± 1.6

68.4 ± 3.2

30.0 ± 1.3

68.2 ± 2.7

29.4 ± 1.5

65.7 ± 3.4

27.9 ± 0.73

69.4 ± 7.5

Tetanus

142.2 ± 15.6

475.2 ± 21.2

140.1 ± 25.6

530.5 ± 4.2*

144.1 ± 10.6

458.4 ± 45.2

128.1 ± 14.4

475.5 ± 49.9

147.2 ± 12.6

493.3 ± 27.8

31.8 ± 5.4

29.5 ± 2.7

38.8 ± 10.5

43.3 ± 3.9

41.1 ± 3.6

47.5 ± 5.6

42.9 ± 3.2

45.7 ± 6.2

43.9 ± 6.3

49.7 ± 8.0

Number of muscles tested

Single twitch

14

10

11

12

14

15

10

10

7

7

Tetanus

14

15

5

8

14

11

8

8

5

6