Table 4 The average values of ECG features before and after rehabilitation therapy.

From: The impact of khat chewing on heart activity and rehabilitation therapy from khat addiction in healthy khat chewers

Feature

Average RB

Average RA

RA-RB difference

%RA-RB difference

Heart rate

85.8

75.8

10

 − 11.66

HRV

0.00564

0.007074

0.001434

25.43

R peak

0.765406

0.768712

0.003306

0.43

QRS duration

0.087332

0.090383

0.003052

3.49

P peak

0.064644

0.070426

0.005782

8.94

T peak

0.171017

0.166362

0.004655

 − 2.72

PR interval

0.133617

0.138276

0.004659

3.49

QT interval

0.317281

0.317975

0.000694

0.22

RR interval

0.690836

0.777389

0.086553

12.53

PR segment

0.051404

0.056591

0.005187

10.09

ST segment

0.106831

0.115520

0.008689

8.13