Table 1. Mean ± SD root mean square error (RMSE) and relative RMSE (rRMSE) for normal GRF waveforms predicted by the LSTM network compared to the measured normal GRF waveforms for each subject.

Subject	RMSE [BW]	rRMSE [%]
1	0.11 ± 0.04	4.0 ± 1.1
2	0.11 ± 0.02	4.1 ± 0.7
3	0.12 ± 0.02	4.4 ± 0.9
4	0.12 ± 0.03	4.6 ± 1.2
5	0.12 ± 0.04	4.7 ± 0.9
6	0.12 ± 0.03	5.2 ± 1.4
7	0.13 ± 0.03	5.1 ± 1.2
8	0.15 ± 0.08	5.3 ± 3.3
9	0.15 ± 0.03	5.4 ± 1.0
10	0.15 ± 0.04	5.2 ± 1.3
11	0.15 ± 0.03	5.8 ± 0.8
12	0.16 ± 0.03	6.1 ± 1.1
13	0.16 ± 0.06	5.7 ± 1.5
14	0.17 ± 0.07	6.9 ± 2.5
15	0.17 ± 0.04	7.9 ± 2.0
16	0.19 ± 0.05	6.7 ± 1.7
17	0.21 ± 0.07	7.2 ± 2.5
18	0.29 ± 0.03	14.0 ± 1.7
19	0.31 ± 0.07	13.7 ± 2.7
Mean ± SD	0.16 ± 0.04	6.4 ± 1.5%