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Table 2 Values of biomechanical variables before and after intervention in first grade students

From: Effects of educational intervention on joint angles of the trunk and lower extremity and on muscle activities during patient-handling tasks

 

First grade students

p valuea

Intervention group 1

Control group

Group

Gender

Time

Side

Male (n = 6)

Female (n = 7)

Male (n = 6)

Female (n = 4)

Pre-measurement

Post 1-measurement

Post 2-measurement

Pre-measurement

Post 1-measurement

Post 2-measurement

Pre-measurement

Post 1-measurement

Post 2-measurement

Pre-measurement

Post 1-measurement

Post 2-measurement

Angle of joint (degrees)

Right hip flexion angle

43.5 ± 19.7

40.5 ± 13.6

44.3 ± 14.7

24.1 ± 12.1

35.7 ± 14.6

47.3 ± 12.0

29.1 ± 9.2

35.9 ± 11.4

37.6 ± 9.1

26.4 ± 13.4

28.5 ± 14.4

28.2 ± 19.8

<0.001

0.012

0.020

0.567

Left hip flexion angle

44.2 ± 22.1

39.1 ± 12.2

47.4 ± 16.7

32.0 ± 10.6

38.2 ± 12.8

49.4 ± 7.8

25.5 ± 11.9

38.9 ± 9.0

40.9 ± 12.1

35.5 ± 14.7

50.5 ± 15.5

28.5 ± 11.0

Right knee flexion angle

52.5 ± 12.7

58.6 ± 16.4

62.9 ± 12.1

19.0 ± 15.7

56.9 ± 14.7

50.1 ± 12.8

33.9 ± 24.3

42.1 ± 20.7

41.4 ± 19.0

24.6 ± 19.6

27.5 ± 31.3

24.5 ± 20.8

<0.001

<0.001

0.008

0.402

Left knee flexion angle

54.0 ± 12.3

57.6 ± 17.6

64.0 ± 13.1

28.6 ± 13.6

49.6 ± 16.2

58.5 ± 15.1

35.5 ± 23.3

41.8 ± 18.3

49.0 ± 19.0

33.6 ± 18.3

19.0 ± 20.1

28.8 ± 17.3

Trunk flexion angle

44.4 ± 7.4

36.8 ± 8.8

38.8 ± 5.8

46.9 ± 17.0

37.6 ± 18.4

36.1 ± 6.6

43.7 ± 6.6

38.6 ± 4.7

43.4 ± 10.0

46.5 ± 6.9

38.8 ± 5.8

44.6 ± 6.1

0.155

0.656

0.116

Surface myography (%MVC)

Right biceps brachii

63.0 ± 31.6

57.2 ± 26.3

58.2 ± 27.6

52.7 ± 42.7

52.7 ± 34.1

50.5 ± 21.1

61.2 ± 33.3

78.9 ± 55.3

62.1 ± 9.0

39.4 ± 18.8

65.3 ± 41.2

76.8 ± 44.5

0.034

0.652

0.368

0.714

Left biceps brachii

37.4 ± 21.9

47.7 ± 24.7

83.9 ± 56.7

25.2 ± 15.5

54.9 ± 27.2

44.5 ± 24.9

63.3 ± 41.1

59.8 ± 41.0

53.1 ± 26.7

37.5 ± 26.5

110.2 ± 86.3

82.0 ± 36.5

Right trapezius

61.1 ± 31.2

57.1 ± 40.1

82.6 ± 67.7

86.1 ± 86.7

103.9 ± 66.1

91.9 ± 36.8

67.2 ± 54.6

83.0 ± 57.2

64.0 ± 41.2

133.9 ± 75.6

108.1 ± 51.8

141.8 ± 67.9

0.645

<0.001

0.917

0.015

Left trapezius

30.1 ± 20.6

43.1 ± 34.9

43.7 ± 9.1

80.9 ± 71.8

77.7 ± 34.0

95.7 ± 58.5

47.1 ± 27.1

38.9 ± 21.1

41.3 ± 26.4

31.3 ± 22.0

62.0 ± 50.0

83.7 ± 46.3

Right rectus femoris

15.0 ± 5.4

17.7 ± 10.3

17.0 ± 9.0

16.3 ± 7.8

34.6 ± 13.6

20.0 ± 4.8

15.5 ± 6.6

18.3 ± 10.9

14.8 ± 10.4

23.8 ± 0.9

30.7 ± 13.0

20.0 ± 6.7

0.085

<0.001

0.052

0.077

Left rectus femoris

13.6 ± 3.2

14.1 ± 10.2

11.5 ± 4.5

22.6 ± 13.7

34.9 ± 14.1

28.7 ± 16.0

16.2 ± 11.1

23.4 ± 10.2

20.8 ± 14.8

25.8 ± 8.9

34.2 ± 8.0

40.5 ± 21.2

Right erector spinae

44.6 ± 15.5

52.9 ± 24.9

54.7 ± 18.4

45.6 ± 13.6

65.3 ± 34.6

46.8 ± 18.9

50.8 ± 24.7

51.8 ± 17.8

54.1 ± 20.0

64.3 ± 24.9

92.0 ± 68.4

83.8 ± 38.4

0.003

<0.001

0.131

0.839

Left erector spinae

40.7 ± 11.1

56.7 ± 16.3

62.7 ± 19.1

51.7 ± 12.3

64.6 ± 32.0

56.5 ± 16.5

43.0 ± 18.5

53.3 ± 14.7

57.0 ± 18.9

67.3 ± 19.8

81.5 ± 23.5

90.7 ± 6.5

Transfer time (ms)

1958 ± 359

2106 ± 505

1867 ± 663

1846 ± 318

1553 ± 360

1404 ± 238

1542 ± 143

1459 ± 272

1392 ± 191

1890 ± 825

1424 ± 305

1237 ± 239

<0.001

0.018

0.001

  1. Values are shown as mean ± standard deviation (SD)
  2. Time, Measurement time; side, right/left
  3. aBy a multivariate analysis of variance (MANOVA); results of interaction effects are described in the text