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Table 3 Binary classification to identify an exercise as correct or incorrect

From: Rehabilitation exercise assessment using inertial sensors: a cross-sectional analytical study

 

Sensor position

Foot

Shin

Thigh

Foot & shin

Shin & thigh

Thigh & foot

All three

Heel slide

Sensitivity (%)

94

91

92

90

86

91

90

Specificity (%)

29

36

44

32

35

37

34

Accuracy (%)

76

76

79

73

72

75

74

Hip abduction

Sensitivity (%)

66

71

77

63

61

71

61

Specificity (%)

91

95

96

93

94

87

94

Accuracy (%)

87

92

94

88

89

85

89

Hip extension

Sensitivity (%)

96

84

93

84

84

98

84

Specificity (%)

99

100

100

97

100

99

100

Accuracy (%)

99

99

99

96

99

99

98

Hip flexion

Sensitivity (%)

72

73

56

74

59

70

66

Specificity (%)

92

92

91

94

90

94

92

Accuracy (%)

88

88

83

90

84

89

86

IRQ

Sensitivity (%)

86

90

92

91

91

88

90

Specificity (%)

20

28

40

31

37

41

44

Accuracy (%)

65

70

75

72

73

73

75

Knee extension

Sensitivity (%)

85

86

90

85

86

89

90

Specificity (%)

36

34

67

38

57

55

57

Accuracy (%)

71

71

83

72

77

79

80

SLR

Sensitivity (%)

64

58

72

64

71

77

69

Specificity (%)

64

58

68

62

69

74

68

Accuracy (%)

64

58

70

63

70

75

68

Average across all seven exercises

Sensitivity (%)

80

79

82

79

77

83

79

Specificity (%)

62

63

72

64

69

70

70

Accuracy (%)

79

79

83

79

81

82

81

  1. Mean Sensitivity, Specificity and Accuracy Scores for each exercise are presented.