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Table 2 Reference values based on quartiles for each gait parameter in the Comprehensive Gait Assessment using InerTial Sensor (C-GAITS) score

From: Development and validation of Comprehensive Gait Assessment using InerTial Sensor score (C-GAITS score) derived from acceleration and angular velocity data at heel and lower trunk among community-dwelling older adults

 

Score

Walking speed

Mean stride time

CV of stride time

CV of swing time

AC-VT

AC-ML

AC-AP

HR-VT

HR-ML

HR-AP

Women

3

≥ 1.54

≤ 0.89

≤ 1.20

≤ 1.80

≥ 0.93

≥ 0.82

≥ 0.93

≥ 3.88

≥ 2.75

≥ 4.37

2

1.43–1.53

0.90–0.93

1.21–1.72

1.81–2.87

0.89–0.92

0.72–0.81

0.88–0.92

3.32–3.87

2.37–2.74

3.76–4.36

1

1.28–1.42

0.94–0.98

1.73–2.54

2.88–3.88

0.82–0.88

0.61–0.71

0.81–0.87

2.79–3.31

1.88–2.36

3.16–3.75

0

≤ 1.27

≥ 0.99

≥ 2.55

≥ 3.89

≤ 0.81

≤ 0.60

≤ 0.80

≤ 2.78

≤ 1.87

≤ 3.15

Men

3

≥ 1.53

≤ 0.95

≤ 1.37

≤ 2.00

≥ 0.92

≥ 0.77

≥ 0.91

≥ 3.85

≥ 2.43

≥ 3.88

2

1.40–1.52

0.96–1.01

1.38–1.69

2.01–2.89

0.88–0.91

0.67–0.76

0.86–0.90

3.16–3.84

1.99–2.42

3.25–3.87

1

1.25–1.39

1.02–1.06

1.70–2.40

2.90–4.20

0.83–0.97

0.59–0.66

0.81–0.85

2.69–3.15

1.62–1.98

2.75–3.24

0

≤ 1.24

≥ 1.07

≥ 2.41

≥ 4.21

≤ 0.82

≤ 0.58

≤ 0.80

≤ 2.68

≤ 1.61

≤ 2.74

  1. CV: coefficient of variation, AC: autocorrelation coefficient, VT: vertical, ML: mediolateral, AP: anteroposterior, HR: harmonic ratio