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Table 5 Results of the validity analysis of the right shoe. The table presents the spatiotemporal parameters for each participant with PD when measured with the shoe-type IMU system versus the motion capture system

From: Validity of shoe-type inertial measurement units for Parkinson’s disease patients during treadmill walking

Right shoe

 

Step length (ICC)

95% CI min, max (cm)

Step time (ICC)

95% CI min, max (s)

IMU system

Motion capture system

IMU system

Motion capture system

Participant 1

0.731*

16.88–17.21

16.96–17.35

0.731*

0.51–0.52

0.51–0.52

Participant 2

0.821*

33.27–33.75

31.70–32.14

0.820*

0.43–0.43

0.41–0.41

Participant 3

0.989*

7.88–8.31

7.85–8.31

0.989*

0.47–0.50

0.47–0.50

Participant 4

0.955*

17.09–17.43

17.09–17.45

0.955*

0.62–0.63

0.62–0.63

Participant 5

0.997*

15.57–16.94

14.94–16.29

0.997*

0.56–0.61

0.54–0.59

Participant 6

0.996*

14.83–15.90

14.94–16.00

0.996*

0.76–0.82

0.77–0.82

Participant 7

0.973*

6.88–7.19

6.82–7.14

0.973*

0.41–0.43

0.41–0.43

Participant 8

0.874*

18.53–19.02

17.19–17.72

0.873*

0.51–0.53

0.48–0.49

Participant 9

0.758*

15.11–15.34

15.22–15.45

0.758*

0.51–0.52

0.51–0.52

Participant 10

0.772*

31.57–31.98

31.47–31.83

0.772*

0.57–0.58

0.57–0.57

Participant 11

0.924*

17.90–18.20

18.25–18.41

0.924*

0.54–0.55

0.54–0.55

Participant 12

0.902*

59.39–60.16

59.34–60.17

0.901*

0.76–0.77

0.76–0.77

Participant 13

0.928*

21.39–21.79

21.62–22.00

0.927*

0.70–0.71

0.71–0.72

Participant 14

0.957*

8.34–8.53

8.36–8.54

0.957*

0.43–0.44

0.43–0.44

Participant 15

0.993*

22.98–24.19

23.25–24.48

0.993*

0.64–0.67

0.64–0.68

Participant 16

0.988*

32.10–32.99

32.18–33.07

0.988*

0.68–0.70

0.68–0.70

Participant 17

0.988*

38.12–39.46

37.91–39.27

0.988*

0.45–0.47

0.46–0.47

  1. *results of the correlation analysis, p < 0.001; CI confidence interval, ICC intraclass correlation coefficient, IMU inertial measurement unit