Table 2. Inter-trial reliability of day one for heel impact signal and soft tissue vibration parameters.
|
Variable |
Method |
Mean ± SD |
ICCmax 95%CI |
ICCmean 95%CI |
CV 95%CI |
N Step |
| INPUT |
AccPeak (m·s-2) |
178.91 ± 38.25 |
0.77[0.59;0.9] |
0.77[0.62;0.91] |
21.38[19.55;23.21] |
80 |
| iAcc (UA. s) |
4.47 ± 1.12 |
0.78[0.58;0.9] |
0.78[0.62;0.91] |
25.09[23.26;26.92] |
70 |
| MDF (Hz) |
FFT |
65.71 ± 10.64 |
0.89[0.53;0.9] |
0.89[0.76;0.95] |
16.19[14.35;18.02] |
10 |
| CWT |
77.6 ± 11.31 |
0.92[0.63;0.93] |
0.92[0.82;0.96] |
14.57[12.74;16.4] |
10 |
| MNF (Hz) |
FFT |
72.71 ± 8.5 |
0.9[0.62;0.92] |
0.9[0.79;0.95] |
11.69[9.85;13.52] |
10 |
| CWT |
82.34 ± 8.2 |
0.92[0.66;0.93] |
0.92[0.82;0.96] |
9.96[8.13;11.8] |
10 |
| MF (Hz) |
CWT |
35.13 ± 16.9 |
0.8[0.53;0.88] |
0.8[0.6;0.9] |
48.09[46.26;49.93] |
70 |
| EnergyPeak (UA) |
FFT |
3.28 ± 0.91 |
0.79[0.58;0.9] |
0.79[0.64;0.92] |
27.86[26.03;29.69] |
50 |
| CWT |
2.5 ± 0.81 |
0.78[0.56;0.89] |
0.78[0.61;0.91] |
32.32[30.49;34.16] |
70 |
| EnergyTotal (UA·s) |
FFT |
260.08 ± 67.38 |
0.67[0.47;0.87] |
0.67[0.47;0.87] |
25.91[24.08;27.74] |
/ |
| CWT |
260.7 ± 66.01 |
0.71[0.54;0.89] |
0.71[0.54;0.89] |
25.32[23.49;27.15] |
/ |
| Damp (m·s-2·s-1) |
CWT |
43.93 ± 9.35 |
0.75[0.52;0.88] |
0.75[0.52;0.88] |
21.29[19.45;23.12] |
100 |
| ST (s) |
CWT |
0.07 ± 0.01 |
0.66[0.36;0.83] |
0.66[0.36;0.83] |
15.75[13.91;17.58] |
/ |
| GAS |
AccPeak (m·s-2) |
64.46 ± 17.75 |
0.8[0.7;0.93] |
0.78[0.59;0.9] |
27.54[25.71;29.37] |
20 |
| iAcc (UA. s) |
3.56 ± 0.63 |
0.81[0.62;0.91] |
0.8[0.63;0.91] |
17.63[15.8;19.47] |
20 |
| MDF (Hz) |
FFT |
33.07 ± 5.39 |
0.75[0.5;0.88] |
0.75[0.5;0.88] |
16.31[14.48;18.14] |
100 |
| CWT |
42.51 ± 7.82 |
0.85[0.54;0.9] |
0.85[0.68;0.93] |
18.38[16.55;20.22] |
10 |
| MNF (Hz) |
FFT |
44.5 ± 5.23 |
0.86[0.49;0.89] |
0.86[0.7;0.93] |
11.75[9.91;13.58] |
10 |
| CWT |
54.09 ± 7.04 |
0.85[0.52;0.9] |
0.85[0.69;0.93] |
13.01[11.18;14.85] |
10 |
| MF (Hz) |
CWT |
18.47 ± 6.13 |
0.42[0.13;0.73] |
0.42[0.13;0.73] |
33.2[31.37;35.03] |
/ |
| EnergyPeak (UA) |
FFT |
3.16 ± 0.78 |
0.82[0.51;0.89] |
0.81[0.61;0.91] |
24.73[22.9;26.56] |
10 |
| CWT |
2.5 ± 0.52 |
0.78[0.6;0.91] |
0.77[0.6;0.9] |
20.66[18.83;22.49] |
40 |
| EnergyTotal (UA·s) |
FFT |
118.14 ± 25.94 |
0.79[0.65;0.92] |
0.79[0.61;0.91] |
21.96[20.13;23.79] |
20 |
| CWT |
128.42 ± 28.21 |
0.76[0.56;0.89] |
0.76[0.55;0.89] |
21.97[20.14;23.8] |
20 |
| Damp (m·s-2·s-1) |
CWT |
23.41 ± 5.63 |
0.86[0.7;0.93] |
0.86[0.68;0.93] |
24.04[22.21;25.87] |
20 |
| ST (s) |
CWT |
0.12 ± 0.02 |
0.55[0.21;0.77] |
0.55[0.2;0.77] |
16.86[15.03;18.7] |
/ |
| VL |
AccPeak (m·s-2) |
68.89 ± 22.98 |
0.28[;0.07;0.63] |
0.28[;0.07;0.63] |
33.34[31.51;35.18] |
/ |
| iAcc (UA. s) |
4 ± 0.7 |
0.63[0.42;0.85] |
0.63[0.42;0.85] |
17.42[15.58;19.25] |
/ |
| MDF (Hz) |
FFT |
29.67 ± 5.27 |
0.73[0.48;0.87] |
0.73[0.48;0.87] |
17.77[15.93;19.6] |
/ |
| CWT |
39.49 ± 5.98 |
0.62[0.32;0.81] |
0.61[0.31;0.81] |
15.15[13.31;16.98] |
/ |
| MNF (Hz) |
FFT |
40.43 ± 5.41 |
0.57[0.23;0.78] |
0.57[0.23;0.78] |
13.39[11.55;15.22] |
/ |
| CWT |
50.64 ± 6.48 |
0.5[0.16;0.74] |
0.5[0.16;0.74] |
12.8[10.96;14.63] |
/ |
| MF (Hz) |
CWT |
17.3 ± 6.03 |
0.84[0.58;0.9] |
0.84[0.67;0.92] |
34.85[33.01;36.68] |
20 |
| EnergyPeak (UA) |
FFT |
3.86 ± 0.91 |
0.66[0.42;0.85] |
0.66[0.42;0.85] |
23.53[21.7;25.37] |
/ |
| CWT |
2.91 ± 0.59 |
0.56[0.28;0.8] |
0.56[0.28;0.8] |
20.22[18.39;22.05] |
/ |
| EnergyTotal (UA·s) |
FFT |
125.56 ± 32.21 |
0.43[0.12;0.73] |
0.43[0.12;0.73] |
25.65[23.82;27.49] |
/ |
| CWT |
133.98 ± 33.22 |
0.39[0.1;0.72] |
0.39[0.1;0.72] |
24.79[22.96;26.62] |
/ |
| Damp (m·s-2·s-1) |
CWT |
17.16 ± 5.38 |
0.47[0.09;0.72] |
0.45[0.07;0.71] |
31.33[29.5;33.17] |
/ |
| ST (s) |
CWT |
0.14 ± 0.02 |
0.57[0.24;0.78] |
0.57[0.24;0.78] |
17.53[15.7;19.36] |
/ |
INPUT: heel impact signal; GAS: gastrocnemius medialis; VL: vastus lateralis; Acc
Peak: peak acceleration; iAcc: integrated acceleration; MDF: median frequency; MNF: mean frequency; MF: median frequency; ST: setting time. Damp: damping coefficient. /: never reach ICC at 0.75 within 100-steps.
