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. 2019 Jan 11;19(2):265. doi: 10.3390/s19020265

Table 2.

Day 1 results of peak force, impulse, loading rate for the force plate (FP) and loadsol® (LS) are presented along with the standard error of the mean (SEM) and the intraclass correlation coefficients (ICC) with their 95% confidence intervals (CI).

Speed 3.5 m/s 3.0 m/s 1.3 m/s
% Grade 0% −10% 10% 0% −10% 10% 0% −10% 10%
Peak Force (BW) FP 2.34 ± 0.24 2.21 ± 0.18 2.28 ± 0.18 2.28 ± 0.23 2.12 ± 0.21 2.21 ± 0.31 1.29 ± 0.22 1.43 ± 0.28 1.31 ± 0.22
SEM 0.05 0.04 0.03 0.04 0.04 0.04 0.04 0.06 0.04
95% CI [2.25, 2.44] [2.13, 2.27] [2.21, 2.35] [2.19, 2.37] [2.04, 2.19] [2.17, 2.32] [1.20, 1.38] [1.32, 1.55] [1.22, 1.40]
LS 2.18 ± 0.25 2.09 ± 0.25 2.13 ± 0.26 2.12 ± 0.25 2.04 ± 0.26 2.08 ± 0.32 1.27 ± 0.24 1. 40 ± 0.27 1.38 ± 0.27
SEM 0.05 0.05 0.05 0.05 0.05 0.04 0.05 0.05 0.05
95% CI [2.08, 2.27] [1.99, 2.19] [2.03, 2.23] [2.02, 2.21] [1.94, 2.13] [2.03, 2.21] [1.17, 1.37] [1.23, 1.51] [1.27, 1.49]
p-value <0.01 * <0.01 * <0.01 * <0.01 * <0.01 * <0.01 * 0.50 0.09 0.04 *
ICC 0.86 0.88 0.78 0.86 0.89 0.92 0.89 0.97 0.87
95% CI [0.69, 0.93] [74, 0.95] [0.53, 0.90] [0.70, 0.94] [0.77, 0.95] [0.83, 0.96] [0.75, 0.95] [0.93, 0.99] [0.71, 0.94]
Impulse (BW *s) FP 0.37 ± 0.02 0.37 ± 0.02 0.36 ± 0.02 0.38 ± 0.02 0.38 ± 0.03 0.39 ± 0.10 0.61 ± 0.11 0.57 ± 0.10 0.61 ± 0.11
SEM <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.02 0.02 0.02
95% CI [0.37, 0.38] [0.36, 0.38] [0.35, 0.37] [0.37, 0.39] [0.37, 0.39] [0.36, 0.38] [0.56,0.65] [0.53, 0.61] [0.56, 0.66]
LS 0.37 ± 0.04 0.36 ± 0.04 0.36 ± 0.04 0.37 ± 0.04 0.37 ± 0.04 0.39 ± 0.10 0.61 ± 0.12 0.58 ± 0.12 0.62 ± 0.13
SEM 0.01 0.01 0.01 0.01 0.01 0.01 0.02 0.02 0.03
95% CI [0.35, 0.38] [0.35, 0.38] [0.35, 0.38] [0.36, 0.39] [0.36, 0.39] [0.36, 0.39] [0.56, 0.66] [0.53, 0.62] [0.57, 0.68]
p-value 0.34 0.12 0.58 0.12 0.22 0.46 0.92 0.33 0.20
ICC 0.68 0.77 0.61 0.69 0.79 0.97 0.96 0.96 0.95
95% CI [0.30, 0.85] [0.50, 0.90] [0.16, 0.82] [0.34, 0.86] [0.55, 0.90] [0.94, 0.99] [0.90, 0.98] [0.90, 0.98] [0.88, 0.98]
Loading Rate (BW/s) FP 41.91 ± 7.96 46.15 ± 9.39 30.87 ± 6.47 38.38 ± 9.16 43.34 ± 9.61 27.43 ± 8.55 7.82 ± 1.81 10.91 ± 3.39 7.50 ± 2.00
SEM 1.50 1.81 1.24 1.73 1.79 1.31 0.36 0.68 0.40
95% CI [38.82, 44.99] [42.43, 49.86] [28.31,33.43] [34.82, 41.39] [39.68, 46.99] [25.66, 31.03] [7.08, 8.57] [9.51, 12.31] [6.68, 8.33]
LS 42.35 ± 10.46 52.02 ± 12.25 29.46 ± 6.72 38.39 ± 10.68 49.14 ± 11.95 24.70 ± 8.15 10.95 ± 3.14 17.44 ± 4.49 9.37 ± 2.97
SEM 1.98 2.36 1.29 2.02 2.22 1.28 0.63 0.90 0.59
95% CI [38.30, 46.41] [47.18, 56.87] [26.80, 2.11] [34.24, 42.53] [44.60, 53.69] [22.89, 28.15] [9.65, 12.24] [15.58, 19.29] [8.14, 10.60]
p-value 0.77 0.01 * 0.11 0.99 <0.01 * <0.01 * <0.01 * <0.01 * <0.01 *
ICC 0.78 0.61 0.87 0.92 0.97 0.93 0.72 0.83 0.90
95% CI [0.53, 0.90] [0.14, 0.82] [0.72, 0.94] [0.60, 0.91] [0.26, 0.84] [0.85, 0.97] [0.36,0.88] [0.60, 0.92] [0.77, 0.95]

* Statistical difference between the loadsol® and force plate values.