Table 5.
Variable | CSM data | Comfortable speed comparison | Matched speed comparison | SEMa | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CSM | HC | Difference | 95 % Confidence intervals | p value | HC | Difference | 95 % Confidence intervals | p value | |||||||||
Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | ||||||||
Medio-lateral GRF | 0.66 | 0.19 | 0.59 | 0.19 | 0.07 | 0.27 | −0.07 | 0.21 | 0.3 | 0.59 | 0.19 | 0.07 | 0.27 | −0.07 | 0.21 | 0.3 | 0.05 |
AP GRF, deceleration | 1.39 | 0.46 | 2.10 | 0.53 | −0.71 | 0.61 | −1.03 | −0.38 | 0.0003 | 1.53 | 0.45 | −0.13 | 0.44 | −0.37 | 0.10 | 0.24 | 0.16 |
AP GRF, acceleration | −1.60 | 0.52 | −2.53 | 0.41 | 0.93 | 0.59 | 0.61 | 1.24 | <0.0001 | −1.90 | 0.45 | 0.30 | 0.45 | 0.05 | 0.54 | 0.02 | 0.10 |
Vertical GRF | 10.58 | 0.74 | 12.23 | 1.42 | −1.65 | 1.57 | b | b | 0.0004b | 10.82 | 0.57 | −0.24 | 0.60 | −0.56 | 0.08 | 0.12 | 0.40 |
Hip extensor moment | 0.78 | 0.20 | 0.88 | 0.22 | −0.10 | 0.21 | −0.21 | 0.01 | 0.075 | 0.61 | 0.23 | 0.16 | 0.23 | 0.04 | 0.29 | 0.01 | 0.122 |
Hip flexor moment | −0.62 | 0.27 | −0.81 | 0.23 | 0.19 | 0.28 | 0.04 | 0.34 | 0.02 | −0.58 | 0.27 | −0.04 | 0.26 | −0.18 | 0.10 | 0.5 | 0.088 |
Hip abductor moment | 0.84 | 0.18 | 0.98 | 0.22 | −0.14 | 0.30 | −0.30 | 0.02 | 0.08 | 0.90 | 0.21 | −0.06 | 0.25 | −0.19 | 0.07 | 0.3 | 0.069 |
Knee extensor moment | 0.27 | 0.18 | 0.56 | 0.26 | −0.30 | 0.27 | −0.44 | −0.15 | 0.0005 | 0.33 | 0.22 | −0.06 | 0.21 | −0.18 | 0.05 | 0.25 | 0.056 |
Knee flexor moment | −0.52 | 0.11 | −0.57 | 0.14 | 0.06 | 0.17 | −0.03 | 0.14 | 0.2 | −0.51 | 0.16 | 0.00 | 0.18 | −0.10 | 0.09 | 0.95 | 0.058 |
Ankle plantarflexor moment | 1.41 | 0.21 | 1.60 | 0.12 | −0.18 | 0.18 | −0.28 | −0.09 | 0.0007 | 1.48 | 0.13 | −0.07 | 0.17 | −0.16 | 0.02 | 0.12 | 0.053 |
Hip power generation, H1 | 0.51 | 0.29 | 0.58 | 0.41 | −0.07 | 0.45 | −0.31 | 0.17 | 0.5 | 0.32 | 0.25 | 0.19 | 0.36 | 0.00 | 0.38 | 0.05 | 0.19 |
Hip power absorption, H2 | −0.61 | 0.27 | −0.96 | 0.39 | 0.35 | 0.41 | 0.13 | 0.56 | 0.004 | −0.57 | 0.31 | −0.05 | 0.28 | −0.20 | 0.10 | 0.5 | 0.10 |
Hip power generation, H3 | 1.00 | 0.45 | 1.71 | 0.47 | −0.71 | 0.54 | −1.00 | −0.42 | 0.0001 | 0.94 | 0.45 | 0.06 | 0.40 | −0.15 | 0.28 | 0.54 | 0.12 |
Knee power absorption, K1 | −0.70 | 0.87 | −2.10 | 1.36 | 1.40 | 1.47 | 0.62 | 2.18 | 0.002 | −0.84 | 0.56 | 0.15 | 0.73 | −0.24 | 0.53 | 0.43 | 0.42 |
Knee power generation, K2 | 0.59 | 0.28 | 0.97 | 0.33 | −0.38 | 0.39 | −0.58 | −0.17 | 0.0015 | 0.56 | 0.25 | 0.03 | 0.31 | −0.13 | 0.19 | 0.7 | 0.17 |
Knee power absorption, K3 | −0.68 | 0.42 | −1.21 | 0.50 | 0.53 | 0.63 | 0.20 | 0.87 | 0.004 | −0.66 | 0.44 | −0.02 | 0.50 | −0.28 | 0.25 | 0.9 | 0.11 |
Knee power absorption, K4 | −0.70 | 0.27 | −1.56 | 0.63 | 0.86 | 0.69 | 0.49 | 1.22 | 0.0002 | −0.84 | 0.44 | 0.14 | 0.41 | −0.08 | 0.36 | 0.19 | 0.12 |
Ankle power absorption, A1 | −0.99 | 0.34 | −0.92 | 0.24 | −0.07 | 0.29 | −0.22 | 0.09 | 0.37 | −0.80 | 0.24 | −0.19 | 0.31 | −0.36 | −0.02 | 0.03 | 0.12 |
Ankle power generation, A2 | 2.82 | 1.34 | 4.85 | 1.19 | −2.03 | 1.56 | −2.86 | −1.20 | 0.0001 | 3.32 | 1.09 | −0.50 | 1.04 | −1.06 | 0.06 | 0.075 | 0.36 |
GRFs are reported in Newtons per kilogram, moments in Newton metres per kilogram, and powers in watts per kilogram
SD standard deviation, AP antero-posterior, GRF ground reaction force, SEM standard error of measurement
aSEM calculated in a previous study [18]
bDenotes non-normally distributed data tested with a Wilcoxon signed-rank test; confidence intervals were not calculated in this case