. 2014 Jan 9;14(1):1073–1093. doi: 10.3390/s140101073

Table 4.

Comparison between νGRF calculated from the insole and force-platform data: normalized root-mean square error (NRMSE), Pearson correlation coefficient, and standard error in the estimation of the stance phase duration (namely $MAE (Δ t_{S T}^{f p} - Δ t_{S T}^{i n})$ ). Data from slow- and normal-speed walking were grouped together. The last column reports the total number of steps that were both recorded by one of the insoles and the force platform.

NRMSE

Pearson Correlation

MAE (Δ t_{S T}^{f p} - Δ t_{S T}^{i n}) [s]

# of Recorded Steps

Subject #1

54.25 ± 9.65

0.88 ± 0.03

0.03 ± 0.03

Subject #2

106.09 ± 16.22

0.89 ± 0.03

0.03 ± 0.02