Table 2.
Intraclass correlation coefficients (ICC) and limits of agreement (LOA) values for spatiotemporal gait parameters obtained in single task condition between the mean of the first and second trials (T1-T2), the first and the third trials (T1-T3), the second and the third trials (T2-T3) and the means of the three consecutive trials (T1-T2-T3).
| ICC 12 (lb–ub) | LOA (lb–ub) | ICC 13 (lb–ub) | LOA (lb–ub) | ICC 23 (lb–ub) | LOA (lb–ub) | ICC(123) | |
|---|---|---|---|---|---|---|---|
| SINGLE TASK | |||||||
| Spatiotemporal gait parameters | |||||||
| Speed | 0.91 (0.73–0.96) | (− 0.15–0.07) | 0.84 (0.30–0.94) | (− 0.20–0.05) | 0.87 (0.74–0.94) | (− 0.18–0.12) | 0.87 (0.72–0.94) |
| Cadence | 0.83 (0.66–0.92) | (− 8.74–6.11) | 0.75 (0.35–0.90) | (− 9.30–3.67) | 0.74 (0.52–0.87) | (− 10.92–7.92) | 0.77 (0.62–0.88) |
| Stride length | 0.97 (0.91–0.99) | (− 0.09–0.05) | 0.95 (0.58–0.98) | (− 0.10–0.02) | 0.97 (0.91–0.98) | (− 0.09–0.05) | 0.96 (0.89–0.98) |
| DS | 0.88 (0.70–0.95) | (− 2.11–4.16) | 0.93 (0.82–0.97) | (− 1.86–3.37) | 0.96 (0.92–0.98) | (− 2.35–1.81) | 0.92 (0.85–0.96) |
| Swing | 0.75 (0.53–0.88) | (− 3.01–2.76) | 0.90 (0.79–0.95) | (− 2.02–1.37) | 0.69 (0.44–0.84) | (− 3.53–3.13) | 0.78 (0.64–0.88) |
| Stance | 0.75 (0.53–0.88) | (− 2.76–3.01) | 0.90 (0.79–0.95) | (− 1.37–2.02) | 0.69 (0.44–0.84) | (− 3.13–3.53) | 0.78 (0.64–0.88) |
| LDr | 0.97 (0.94–0.99) | (− 1.48–1.26) | 0.94 (0.85–0.97) | (− 2.32–1.28) | 0.95 (0.89–0.98) | (− 1.89–1.07) | 0.95 (0.91–0.98) |
| FFr | 0.87 (0.75–0.94) | (− 4.54–5.1) | 0.92 (0.78–0.97) | (− 2.09–4.18) | 0.84 (0.69–0.92) | (− 4.55–6.08) | 0.88 (0.79–0.94) |
| Pur | 0.87 (0.74–0.94) | (− 4.58–4.24) | 0.94 (0.87–0.97) | (− 2.97–1.92) | 0.88 (0.76–0.94) | (− 4.67–3.95) | 0.89 (0.81–0.94) |
| Normalized spatiotemporal gait parameters | |||||||
| Speed N | 0.91 (0.73–0.96) | (− 0.05–0.02) | 0.83 (0.29–0.94) | (− 0.06–0.02) | 0.87 (0.73–0.94) | (− 0.06–0.04) | 0.87 (0.71–0.94) |
| Cadence N | 0.75 (0.52–0.87) | (− 2.73–1.92) | 0.64 (0.20–0.84) | (− 2.86–1.12) | 0.63 (0.35–0.81) | (− 3.41–2.48) | 0.67 (0.48–0.82) |
| Slength N | 0.95 (0.87–0.98) | (− 0.09–0.05) | 0.93 (0.46–0.98) | (− 0.10–0.02) | 0.95 (0.88–0.98) | (− 0.09–0.05) | 0.94 (0.85–0.97) |
| Symmetry index gait parameters | |||||||
| Speed SI | 0.11 (− 0.24–0.45) | (− 7.13–5.15) | 0.20 (− 0.12–0.51) | (− 6.24–3.74) | 0.07 (− 0.31–0.42) | (− 7.78–7.27) | 0.11 (− 0.09–0.37) |
| Cadence SI | 0.00 (− 0.37–0.37) | (− 6.36–5.26) | 0.16 (− 0.22–0.5) | (− 4.10- 3.49) | 0.02 (− 0.35–0.38) | (− 6.70–7.18) | 0.03 (− 0.16–0.28) |
| Slength SI | 0.49 (0.15–0.72) | (− 4.06–3.43) | 0.52 (0.20- 0.74) | (− 3.76–2.88) | 0.37 (0.01–0.65) | (− 4.43–4.18) | 0.45 (0.23–0.67) |
| Swing SI | 0.49 (0.15–0.73) | (− 5.51–6.5) | 0.56 (0.25–0.77) | (− 6.27–5.86) | 0.18 (− 0.20–0.51) | (− 8.37–6.97) | 0.42 (0.19–0.64) |
| Stance SI | 0.48 (0.14–0.72) | (− 3.69–4.34) | 0.58 (0.27–0.78) | (− 4.09–3.77) | 0.23 (− (− 0.15–0.55) | (− 5.29–4.33) | 0.43 (0.21–0.65) |
| LDr SI | 0.50 (0.17–0.73) | (− 18.84–14.14) | 0.38 (0.02–0.66) | (− 20.98–19.54) | 0.54 (0.21–0.75) | (− 17.04–20.3) | 0.47 (0.25–0.68) |
| FFr SI | 0.48 (0.15–0.72) | (− 9.29–7.01) | 0.67 (0.41–0.83) | (− 6.08–4.82) | 0.24 (− 0.14–0.56) | (− 10.40–11.42) | 0.43 (0.20- 0.65) |
| Pur SI | 0.15 (− 0.22–0.49) | (− 12.62–9.95) | 0.36 (0.01–0.64) | (− 11.22–8.41) | 0.27 (− 0.10–0.58) | (− 12.66–12.53) | 0.26 (0.04–0.51) |
| Symmetry ratio gait parameters | |||||||
| Speed SR | 0.00 (− 0.33–0.35) | (− 0.09–0.06) | 0.23 (− 0.12–0.54) | (− 0.07–0.05) | 0.17 (− 0.21–0.51) | (− 0.08–0.08) | 0.10 (− 0.10–0.36) |
| Cadence SR | 0.20 (− 0.16–0.52) | (− 0.07–0.05) | 0.01 (− 0.34–0.37) | (− 0.06–0.04) | 0.09 (− 0.28–0.45) | (− 0.08–0.08) | 0.11 (− 0.10–0.37) |
| Slength SR | 0.00 (− 0.37–0.37) | (− 0.07–0.06) | 0.50 (0.17–0.73) | (− 0.05–0.03) | 0.35 (− 0.02–0.63) | (− 0.05–0.05) | 0.26 (0.03–0.51) |
| Swing SR | 0.57 (0.26–0.77) | (− 0.09–0.05) | 0.66 (0.34–0.83) | (− 0.09–0.05) | 0.59 (0.29–0.79) | (− 0.09–0.08) | 0.61 (0.41–0.78) |
| Stance SR | 0.58 (0.27–0.78) | (− 0.04–0.06) | 0.71 (0.40–0.86) | (− 0.03–0.05) | 0.63 (0.35–0.81) | (− 0.05–0.05) | 0.64 (0.45–0.80) |
| LDr SR | 0.82 (0.64–0.91) | (− 0.20–0.18) | 0.59 (0.29–0.79) | (− 0.29–0.30) | 0.71 (0.47–0.86) | (− 0.25–0.28) | 0.70 (0.53–0.84) |
| FFr SR | 0.77 (0.56–0.88) | (− 0.08–0.08) | 0.47 (0.13–0.71) | (− 0.11–0.11) | 0.57 (0.25–0.77) | (− 0.12–0.11) | 0.61 (0.40–0.78) |
| Pur SR | 0.56 (0.25–0.77) | (− 0.15–0.14) | 0.56 (0.24–0.77) | (− 0.15–0.14) | 0.62 (0.33–0.8) | (− 0.15–0.16) | 0.58 (0.37–0.76) |
Abbreviations: ICC = intraclass correlation coefficient, LOA = limits of agreement, SI = symmetry index, SR = symmetry ratio, lb = lower bound, ub = upper bound, DS = double support, LDr = Load Ratio, FFr = Foot flat ratio, Pur = Push ratio, N = normalized.