Table 3.
Heart rate (beats per minute) monitor differences according to the stage of the exercise.
| Activity | Heart rate, mean (SD) | Fitbit differences from Polar H10, mean (SD) | ||||
|
|
Polar H10 | Fitbit | Paired difference | Percent difference (RERa) | Agreement (rc)b | |
| Pre-exercise rest | 78.00 (7.68) | 78.61 (8.74) | –1.34 (5.53) | –1.84 (7.51) | 0.76 | |
| Warm-up | 94.78 (7.91) | 96.26 (9.17) | –2.96 (10.27) | –3.91 (11.92) | 0.39 | |
| Exercise | 117.04 (8.10) | 115.15 (9.3) | 3.77 (6.98) | 3.09 (5.64) | 0.63 | |
| Cool-down | 103.56 (6.68) | 104.24 (7.90) | –0.72 (5.83) | –0.77 (5.74) | 0.68 | |
| Postexercise rest | 85.86 (7.42) | 85.99 (7.71) | –0.38 (3.53) | –0.52 (4.04) | 0.89 | |
aRelative error rate.
bLin concordance correlation coefficient.