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Interdevice reliability measures of the left versus right Fizzo for heart rate data captured during treadmill running in Study 1.
| Characteristics | 6 km/h | 12 km/h | Total |
| Intraclass correlation coefficient (95% CI) | 0.978 (0.977-0.979) | 0.988 (0.988-0.990) | 0.990 (0.990-0.991) |
| Mean difference, right-left (standard error of measurements) | 0.42 (0.03) | –0.66 (0.06) | 0.05 (0.03) |
| Mean absolute percentage error, % (SD) | 1.42 (1.64) | 1.44 (1.72) | 1.43 (1.67) |
