Table 4.
Heart rate errors compared with electrocardiogram-based reference that were calculated using 10-second nonoverlapping windows, as means and standard deviations, expressed in beats per minute and percentages.
| Activity | Error, bpma | Absolute error, bpm | Percentage error, % | Absolute percentage error, % | ||||
|
|
Mean | SD | Mean | SD | Mean | SD | Mean | SD |
| RHRb protocol | 0.6 | 1.8 | 1.5 | 1.7 | 1.0 | 3.1 | 2.2 | 3.0 |
| Treadmill | −4.1 | 8.3 | 5.5 | 7.8 | −3.7 | 7.6 | 5.2 | 7.1 |
| Treadmill 5% | −0.3 | 4.2 | 3.9 | 4.2 | −0.4 | 4.0 | 3.8 | 3.9 |
| Ergometer bike | 0.3 | 1.1 | 1.3 | 0.9 | 0.3 | 1.1 | 1.3 | 1.0 |
| Cross trainer | −6.1 | 16.1 | 8.0 | 15.3 | −4.6 | 11.9 | 6.1 | 11.2 |
| Household | −2.3 | 5.7 | 5.7 | 4.3 | −1.7 | 6.0 | 6.0 | 4.4 |
| Desk work | 0.9 | 1.8 | 1.7 | 1.7 | 1.4 | 3.1 | 2.4 | 2.9 |
| Lying down | 0.5 | 0.8 | 1.1 | 0.6 | 0.7 | 1.2 | 1.6 | 1.0 |
| Standing | −0.3 | 1.4 | 2.0 | 1.4 | −0.3 | 1.6 | 2.3 | 1.6 |
| Walking | −4.3 | 9.2 | 7.1 | 7.8 | −3.8 | 8.3 | 6.7 | 6.8 |
| Cycling | −20.1 | 26.9 | 20.7 | 26.5 | −14.5 | 18.4 | 15.1 | 18.0 |
| Running | −6.7 | 9.7 | 8.3 | 8.7 | −4.1 | 6.5 | 5.5 | 5.7 |
| Total | −1.7 | 1.6 | 3.1 | 1.4 | −1.3 | 1.5 | 3.1 | 1.4 |
abpm: beats per minute.
bRHR: resting heart rate.