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Table 6 Effects of passage of time and electrode displacement on joint torque estimation.

From: Comparison of regression models for estimation of isometric wrist joint torques using surface electromyography

Model

After 1 hour

After 24 hours

  

NRMSE

R a 2

NRMSE

R a 2

PBM

Mean

5.28%

0.56

5.54%

0.47

 

STD

2.68%

0.24

2.95%

0.26

OLS

Mean

4.84%

0.59

5.29%

0.51

 

STD

2.98%

0.27

3.04%

0.25

RLS

Mean

4.81%

0.63

5.19%

0.54

 

STD

2.91%

0.23

2.98%

0.27

SVM

Mean

5.35%

0.54

6.76%

0.46

 

STD

2.22%

0.21

2.95%

0.28

ANN

Mean

5.40%

0.53

6.44%

0.51

 

STD

2.15%

0.28

3.09%

0.31

LWPR

Mean

5.42%

0.60

5.93%

0.59

 

STD

3.00%

0.23

3.18%

0.30