Table 6 Fitting parameters for HR kinetics during the ON phase of steady-state exercise.
From: Validity of Hera Leto consumer earbuds for heart rate monitoring during stationary cycling
Type | Parameter | Polar H10 | Polar Verity Sense | Polar Vantage V | Hera Leto |
|---|---|---|---|---|---|
45%VO2max | \(\:HRbaseline\) (bpm) | 98 ± 9 | 97 ± 10 | 97 ± 10 | 97 ± 9 |
\(\:A\) (bpm) | 27.22 ± 9.52 | 28.04 ± 10.41 | 27.67 ± 9.68 | 27.46 ± 9.98 | |
\(\:\tau\:\) (s) | 111.09 ± 66.20 | 124.97 ± 61.97 * | 121.88 ± 60.60 | 119.72 ± 55.16 | |
RMSE | 3 ± 1 | 3 ± 1 | 3 ± 1 | 3 ± 1 | |
\(\:R\)2 | 0.73 ± 0.15* | 0.79 ± 0.12* | 0.77 ± 0.13* | 0.75 ± 0.15* | |
55%VO2max | \(\:HRbaseline\) (bpm) | 98 ± 9 | 96 ± 8 | 97 ± 8 | 97 ± 8 |
\(\:A\) (bpm) | 44.05 ± 6.75 | 46.46 ± 6.98 | 45.76 ± 6.88 | 44.66 ± 6.76 | |
\(\:\tau\:\) (s) | 91.21 ± 36.09 | 112.67 ± 50.72 | 112.97 ± 46.61* | 106.18 ± 46.79 | |
RMSE | 3 ± 1 | 3 ± 1 | 3 ± 1 | 3 ± 1 | |
\(\:R\)2 | 0.89 ± 0.06 | 0.92 ± 0.04* | 0.92 ± 0.05* | 0.91 ± 0.05 | |
65%VO2max | \(\:HRbaseline\) (bpm) | 98 ± 9 | 97 ± 8 | 97 ± 7 | 97 ± 8 |
\(\:A\) (bpm) | 53.50 ± 10.44 | 54.30 ± 10.78 | 54.69 ± 9.81 | 54.52 ± 10.16 | |
\(\:\tau\:\) (s) | 102.37 ± 31.96 | 114.60 ± 36.79* | 119.15 ± 40.30* | 110.24 ± 37.61 | |
RMSE | 3 ± 1 | 3 ± 1* | 3 ± 1 | 3 ± 1 | |
\(\:R\)2 | 0.93 ± 0.03 | 0.95 ± 0.02* | 0.95 ± 0.02* | 0.93 ± 0.03* | |
75%VO2max | \(\:HRbaseline\) (bpm) | 105 ± 9 | 104 ± 9 | 104 ± 9 | 104 ± 9 |
\(\:A\) (bpm) | 54.02 ± 8.56 | 55.65 ± 8.62* | 55.73 ± 8.21* | 54.02 ± 8.56 | |
\(\:\tau\:\) (s) | 97.31 ± 31.84 | 112.67 ± 32.49* | 112.53 ± 28.08* | 104.27 ± 30.46* | |
RMSE | 3 ± 1 | 3 ± 1 | 3 ± 1 | 3 ± 1 | |
\(\:R\)2 | 0.94 ± 0.03 | 0.95 ± 0.03 | 0.96 ± 0.02* | 0.94 ± 0.03 |
