Table 1. Intra-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) |
184.01 ± 46.87 |
0.72[0.59;0.84] |
0.7[0.58;0.83] |
25.47[23.8;27.15] |
/ |
| iAcc (UA. s) |
4.66 ± 1.23 |
0.93[0.88;0.96] |
0.88[0.81;0.93] |
26.3[24.63;27.98] |
10 |
| MDF (Hz) |
FFT |
66.5 ± 11.78 |
0.8[0.63;0.87] |
0.74[0.63;0.86] |
17.72[16.04;19.4] |
10 |
| CWT |
78.68 ± 11.72 |
0.85[0.73;0.91] |
0.82[0.73;0.9] |
14.89[13.22;16.57] |
10 |
| MNF (Hz) |
FFT |
73.17 ± 8.95 |
0.86[0.76;0.92] |
0.82[0.73;0.9] |
12.24[10.56;13.91] |
10 |
| CWT |
83.03 ± 8.36 |
0.88[0.78;0.93] |
0.85[0.76;0.92] |
10.07[8.39;11.74] |
10 |
| MF (Hz) |
CWT |
37.79 ± 25.5 |
0.51[0.38;0.68] |
0.46[0.34;0.64] |
67.49[65.81;69.16] |
/ |
| EnergyPeak (UA) |
FFT |
3.42 ± 1.02 |
0.91[0.85;0.95] |
0.85[0.77;0.92] |
29.79[28.11;31.46] |
10 |
| CWT |
2.63 ± 0.93 |
0.91[0.85;0.95] |
0.85[0.77;0.92] |
35.33[33.66;37.01] |
10 |
| EnergyTotal (UA·s) |
FFT |
274.31 ± 82.65 |
0.88[0.81;0.94] |
0.84[0.75;0.91] |
30.13[28.45;31.8] |
10 |
| CWT |
276.88 ± 79.68 |
0.89[0.82;0.94] |
0.84[0.76;0.92] |
28.77[27.1;30.45] |
10 |
| Damp (m·s-2·s-1) |
CWT |
44.84 ± 12.02 |
0.64[0.5;0.79] |
0.51[0.37;0.68] |
26.8[25.12;28.47] |
/ |
| ST (s) |
CWT |
0.07 ± 0.01 |
0.59[0.43;0.75] |
0.39[0.27;0.57] |
21.15[19.48;22.83] |
/ |
| GAS |
AccPeak (m·s-2) |
73.92 ± 29.51 |
0.85[0.76;0.92] |
0.78[0.68;0.88] |
39.91[38.24;41.59] |
10 |
| iAcc (UA. s) |
4.19 ± 0.88 |
0.8[0.69;0.89] |
0.8[0.69;0.89] |
20.94[19.26;22.62] |
10 |
| MDF (Hz) |
FFT |
29.69 ± 4.87 |
0.84[0.71;0.9] |
0.82[0.73;0.9] |
16.4[14.73;18.08] |
10 |
| CWT |
39.86 ± 6.1 |
0.81[0.67;0.88] |
0.81[0.71;0.9] |
15.31[13.64;16.99] |
10 |
| MNF (Hz) |
FFT |
40.72 ± 5.21 |
0.84[0.7;0.9] |
0.83[0.74;0.91] |
12.8[11.13;14.48] |
10 |
| CWT |
51.39 ± 7.25 |
0.89[0.75;0.92] |
0.88[0.82;0.94] |
14.11[12.43;15.79] |
10 |
| MF (Hz) |
CWT |
16.94 ± 6.67 |
0.67[0.53;0.82] |
0.59[0.45;0.74] |
39.39[37.72;41.07] |
/ |
| EnergyPeak (UA) |
FFT |
4.08 ± 1.18 |
0.86[0.78;0.93] |
0.83[0.74;0.91] |
28.81[27.14;30.49] |
10 |
| CWT |
3.06 ± 0.77 |
0.81[0.7;0.9] |
0.78[0.68;0.88] |
25.02[23.35;26.7] |
10 |
| EnergyTotal (UA·s) |
FFT |
132.65 ± 38.46 |
0.83[0.73;0.91] |
0.79[0.68;0.88] |
28.99[27.31;30.67] |
10 |
| CWT |
142.74 ± 39.05 |
0.81[0.7;0.9] |
0.76[0.65;0.87] |
27.36[25.68;29.03] |
10 |
| Damp (m·s-2·s-1) |
CWT |
17.77 ± 8.34 |
0.6[0.47;0.76] |
0.56[0.43;0.73] |
46.95[45.27;48.63] |
/ |
| ST (s) |
CWT |
0.14 ± 0.03 |
0.53[0.39;0.71] |
0.49[0.36;0.67] |
24.58[22.91;26.26] |
/ |
| VL |
AccPeak (m·s-2) |
67.1 ± 22.91 |
0.64[0.48;0.78] |
0.58[0.45;0.74] |
34.14[32.47;35.82] |
/ |
| iAcc (UA. s) |
3.68 ± 0.77 |
0.7[0.57;0.82] |
0.67[0.55;0.81] |
20.96[19.29;22.64] |
/ |
| MDF (Hz) |
FFT |
32.35 ± 5.47 |
0.77[0.66;0.88] |
0.75[0.64;0.86] |
16.91[15.24;18.59] |
10 |
| CWT |
41.36 ± 6.94 |
0.8[0.69;0.89] |
0.8[0.71;0.89] |
16.78[15.11;18.46] |
10 |
| MNF (Hz) |
FFT |
43.94 ± 5.41 |
0.8[0.7;0.9] |
0.77[0.67;0.87] |
12.3[10.63;13.98] |
10 |
| CWT |
53.06 ± 6.42 |
0.84[0.76;0.92] |
0.84[0.75;0.91] |
12.1[10.42;13.78] |
10 |
| MF (Hz) |
CWT |
18.89 ± 8.44 |
0.6[0.44;0.76] |
0.51[0.38;0.69] |
44.7[43.02;46.37] |
/ |
| EnergyPeak (UA) |
FFT |
3.28 ± 0.96 |
0.69[0.56;0.82] |
0.69[0.56;0.82] |
29.2[27.53;30.88] |
/ |
| CWT |
2.61 ± 0.6 |
0.66[0.52;0.8] |
0.62[0.49;0.77] |
22.95[21.28;24.63] |
/ |
| EnergyTotal (UA·s) |
FFT |
121.13 ± 30.83 |
0.71[0.58;0.83] |
0.68[0.55;0.81] |
25.45[23.77;27.13] |
/ |
| CWT |
130.11 ± 32.11 |
0.71[0.58;0.83] |
0.67[0.54;0.8] |
24.68[23;26.36] |
/ |
| Damp (m·s-2·s-1) |
CWT |
22.91 ± 6.4 |
0.57[0.4;0.74] |
0.5[0.36;0.68] |
27.93[26.26;29.61] |
/ |
| ST (s) |
CWT |
0.12 ± 0.03 |
0.47[0.32;0.67] |
0.32[0.22;0.5] |
26.33[24.65;28] |
/ |
INPUT: heel impact signal; GAS: gastrocnemius medialis; VL: vastus lateralis; AccPeak: 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.