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Modification produced no measurable temporal changes in the ECG waveform in all frontal planes
| ECG intervals | Standard limb lead (SLL) ECG | Modified limb lead (MLL) ECG | P* | ||||
|---|---|---|---|---|---|---|---|
| Mean | SD | Range | Mean | SD | Range | ||
| PR Interval | 160.16 | 9.76 | 140 to 176 | 161.16 | 8.76 | 144 to 177 | >0.05 |
| QRS wave | 94.38 | 8.71 | 78 to 109 | 92.98 | 9.23 | 78 to 106 | >0.05 |
| QT Interval | 341.23 | 21.36 | 302 to 380 | 344.57 | 19.98 | 302 to 388 | >0.05 |
SD - standard deviation; values are in miliseconds;
Paired sample t-test
