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Table 4 The measured kinematics of the hips of all participants, stratified by BMI

From: Three-dimensional motion analysis of ten common Asian sitting positions in daily living and factors affect range of hip motions

Kinematic data of each

sitting position

Non-overweight

Median (range)

degrees

(n = 26)

Overweight

Median (range)

degrees

(n = 22)

P value

Flexion (+) / Extension (−)

 Kneeling plantar-flexed

67.4 (38.6 to 86.1)

67.1 (53.7 to 79.2)

0.619

 Kneeling dorsi-flexed

52.4 (29.9 to 66.7)

50.4 (38.0 to 60.3)

0.346

 Benjangkapradit prostration

99.8 (52.5 to 114.9)

91.6 (61.9 to 108.7)

0.004*

 Cross-legged

85.9 (60.2 to 105.4)

92.0 (62.8 to 105.6)

0.207

 Left monk

  Left hip

67.9 (19.0 to 79.2)

63.2 (24.3 to 80.5)

0.077

  Right hip

79.8 (55.4 to 93.0)

81.8 (66.4 to 94.5)

0.116

 Right monk

  Left hip

78.8 (60.1 to 90.5)

79.8 (67.7 to 96.6)

0.185

  Right hip

66.9 (28.1 to 79.8)

63.7 (39.1 to 79.6)

0.649

 Squatting

102.5 (47.3 to 115.4)

97.2 (48.7 to 122.0)

0.040*

 Sitting on a step stool

90.5 (55.5 to 101.6)

88.1 (44.9 to 101.9)

0.242

 Figure-four

80.3 (58.5 to 99.7)

83.9 (72.5 to 104.5)

0.166

 Standard leg-cross

78.5 (58.4 to 93.3)

83.8 (66.8 to 96.4)

0.005*

Abduction (+) / Adduction (−)

 Kneeling plantar-flexed

3.2 (−8.4 to 12.9)

6.8 (−6.0 to 18.1)

0.023*

 Kneeling dorsi-flexed

6.4 (−4.1 to 14.9)

7.8 (−1.1 to 20.4)

0.084

 Benjangkapradit prostration

2.6 (−7.8 to 13.7)

6.3 (− 10.3 to 24.9)

0.054

 Cross-legged

29.9 (10.4 to 44.3)

28.4 (9.9 to 45.7)

0.619

 Left-monk

  Left hip

15.1 (−6.4 to 44.7)

22.8 (−3.7 to 55.8)

0.043*

  Right hip

6.6 (−4.8 to 21.8)

16.1 (−5.0 to 30.7)

0.024*

 Right-monk

  Left hip

5.0 (−7.5 to 20.6)

11.2 (−8.5 to 29.4)

0.113

  Right hip

14.4 (−8.4 to 37.8)

20.2 (1.8 to 38.9)

0.034*

 Squatting

7.6 (−6.5 to 24.2)

11.8 (−5.1 to 34.3)

0.475

 Sitting on a step stool

6.4 (−6.0 to 23.1)

14.6 (−3.4 to 31.5)

0.018*

 Figure-four

15.8 (10.1 to 28.7)

17.9 (2.5 to 35.2)

0.396

 Standard leg-cross

−13.7 (−21.7 to 3.9)

−6.0 (−19.9 to 6.7)

<  0.001*

External rotation (+) / Internal rotation (−)

 Kneeling plantar-flexed

1.19 (−6.3 to 16.63)

1.8 (−8.1 to 20.8)

0.627

 Kneeling dorsi-flexed

6.7 (−8.3 to 22.0)

9.9 (1.8 to 17.9)

0.136

 Benjangkapradit prostration

1.2 (−12.7 to 12.1)

6.7 (−18.2 to 15.5)

0.301

 Cross-legged

64.4 (37.6 to 81.7)

57.8 (40.7 to 80.5)

0.051

 Left-monk

  Left hip

−36.6 (−54.5 to −15.5)

− 37.5 (−53.4 to − 5.2)

0.860

  Right hip

50.4 (33.9 to 62.2)

47.2 (18.7 to 62.5)

0.166

 Right-monk

  Left hip

49.5 (37.1 to 58.9)

46.2 (27.7 to 54.1)

0.036*

  Right hip

−37.0 (−52.3 to −9.9)

− 36.3 (− 51.9 to −4.7)

0.852

 Squatting

−3.4 (−23.7 to 7.7)

−6.3 (−24.5 to 4.0)

0.128

 Sitting on a step stool

−4.6 (− 15.9 to 6.8)

−7.6 (− 15.7 to 9.3)

0.069

 Figure-four

59.1 (42.9 to 68.9)

51.6 (35.1 to 75.7)

0.072

 Standard leg-cross

27.4 (2.9 to 45.2)

26.7 (12.9 to 63.7)

0.555

  1. The P values were for the Mann–Whitney U test.
  2. The asterisk (*) denotes a statistically significant difference between two groups.