Table 2.
Prospective development of spatiotemporal gait parameters [mean ± SD (min–max)].
| Pre-dialysis (n = 14) | 3 months (n = 13) | 6 months (n = 13) | 12 months (n = 13) | 24 months (n = 13) | p (F) | |
|---|---|---|---|---|---|---|
| Spatio-temporal parameters | ||||||
| Gait speed (m/s) | 0.87 ± 0.28 (0.35–1.20) | 0.88 ± 0.28 (0.42–1.29) | 0.86 ± 0.31 (0.26–1.22) | 0.93 ± 0.24 (0.53–1.23) | 0.87 ± 0.23 (0.36–1.11) | 0.40 (0.77) |
| Cadence (step/min) | 104 ± 15 (71–126) | 106 ± 15 (73–124) | 106 ± 15 (75–126) | 107 ± 15 (79–127) | 103 ± 14 (74–124) | 0.66 (0.52) |
| Stride time (s) | 1.20 ± 0.20 (0.96–1.71) | 1.17 ± 0.19 (0.99–1.69) | 1.17 ± 0.18 (0.96–1.61) | 1.16 ± 0.17 (0.96–1.55) | 1.20 ± 0.18 (0.98–1.65) | 0.72 (0.47) |
| Stride length (m) | 1.02 ± 0.23 (0.58–1.34) | 1.12 ± 0.23 (0.80–1.58) | 1.09 ± 0.25 (0.65–1.43) | 1.08 ± 0.19 (0.77–1.43) | 1.09 ± 0.22 (0.73–1.46) | 0.14 (2.00) |
| Step time (s) | 0.60 ± 0.10 (0.48–0.86) | 0.58 ± 0.09 (0.49–0.83) | 0.59 ± 0.09 (0.48–0.81) | 0.58 ± 0.09 (0.48–0.77) | 0.60 ± 0.09 (0.49–0.82) | 0.64 (0.59) |
| Step length (m) | 0.51 ± 0.11 (0.29–0.67) | 0.56 ± 0.12 (0.40–0.79) | 0.54 ± 0.13 (0.32–0.71) | 0.54 ± 0.1 (0.38–0.71) | 0.54 ± 0.11 (0.36–0.73) | 0.15 (1.94) |
| Variability | ||||||
| CV Stride time | 6.66 ± 3.36 (2.16–15.45) | 5.47 ± 2.76 (2.36–9.99) | 6.13 ± 3.65 (2.53–14.60) | 5.24 ± 2.19 (1.44–9.00) | 5.66 ± 2.51 (1.57–9.79) | 0.50 (0.46) |
| CV Stride length | 5.53 ± 2.50 (2.17–10.69) | 5.31 ± 1.73 (2.84–8.72) | 4.41 ± 1.80 (1.66–8.79) | 4.39 ± 2.64 (0.91–10.85) | 4.88 ± 2.48 (1.78–11.54) | 0.50 (0.86) |
| CV Step time | 10.56 ± 4.77 (3.42–18.99) | 10.01 ± 4.34 (4.07–17.47) | 8.84 ± 3.72 (3.83–16.24) | 9.98 ± 6.62 (1.76–22.64) | 9.39 ± 3.16 (2.61–15.74) | 0.36 (1.09) |
| CV Step length | 10.63 ± 4.53 (3.82–19.89) | 9.27 ± 4.27 (3.07–18.58) | 10.75 ± 6.03 (4.14–26.73) | 10.81 ± 7.26 (2.96–30.44) | 10.61 ± 5.05 (2.72–19.9) | 0.18 (1.00) |
| Regularity | 0.86 ± 0.11 (0.64–0.99) | 0.89 ± 0.07 (0.73–0.99) | 0.90 ± 0.06 (0.80–0.98) | 0.89 ± 0.07 (0.78–0.98) | 0.87 ± 0.12 (0.52–0.95) | 0.60 (0.59) |
| Dual-task cost | ||||||
| Gait speed | 24 ± 22 (3–94) | 17 ± 8 (7–37) | 19 ± 12 (4–44) | 16 ± 11 (5–38) | 17 ± 11 (2–37) | 0.54 (1.04) |
| Cadence | 9 ± 7 (−5 to 20) | 7 ± 5 (1–21) | 9 ± 6 (0–18) | 8 ± 7 (−1 to 21) | 10 ± 7 (0–25) | 0.55 (0.69) |
| Stride time | 10 ± 8 (−3 to 25) | 9 ± 7 (0–27) | 12 ± 8 (0–22) | 10 ± 10 (0–30) | 12 ± 10 (−1 to 34) | 0.65 (0.53) |
| Stride length | 6 ± 11 (−9 to 33) | 2 ± 6 (−8 to 12) | 3 ± 9 (−12 to 24) | 4 ± 6 (−3 to 15) | −1 ± 6 (−12 to 10) | 0.51 (1.17) |