Table 2 Applied forces (N) in position 1 and position 2

Hip

391

1998

1663

645

Adductor

2

128

–

204

Biceps femoris

66

–

197

–

Erector spinae

28

44

133

140

Gemellus

8

40

32

16

Gluteus

63

512

848

–

Gracilis

17

8

–

26

Iliacus

43

169

–

116

Multifidi

18

15

36

23

Obliquus internus

112

85

24

66

Obturator

28

268

164

231

Pectineus

5

25

–

25

Piriformis

–

66

56

–

Psoas major

7

39

2

24

Quadratus femoris

2

25

2

58

Quadratus lumborum

14

11

4

30

Rectus abdominis

Rectus femoris

–

494

34

241

Sartorius

47

127

–

80

Semimembranosus

137

–

78

–

Semitendinosus

127

–

38

–

Tensor fascia lata

–

88

13

39

Sum of forces (for information only)

1115

4142

3324

1964