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. 2020 Aug 31;15(8):e0238569. doi: 10.1371/journal.pone.0238569

Table 2. Validity measures from participants (N = 21) who wore a concurrent criterion device during the 1-mile uphill portion of a 2-mile trail run.

Garmin Fenix 5 Jabra Elite Sport Motiv Ring Scosche Rhythm+ Suunto Spartan Sport
Heart rate (bpm) 134 (20) 125 (63) 134 (29) 146 (32) 154 (23)
MAPE (%) 13.7 24.5 16.4 6.2 1.5
MAE (bpm) 21.7 35.9 25.6 9.3 2.1
Bias (SD) 19.4 (203.8) 21.6 (1223.1) 22.6 (351.1) 3.9 (120.0) -0.1 (2.0)
Limits of Agreement (95% CI) -65.6 (-74.4 to -56.8) to 104.3 (95.5 to 113.1) -254.8 (-271.5 to -238.2) to 298.1 (281.4 to 314.7) -231.4 (-261.0 to -201.8) to 276.7 (247.1 to 306.3) -88.4 (-94.6 to -82.2) to 96.1 (89.9 to 102.3) -34.7 (-35.8 to -33.7) to 34.9 (33.8 to 35.9)
rC (95% CI) 0.450 (0.435 to 0.465) 0.314 (0.304 to 0.323) 0.394 (0.305 to 0.476) 0.699 (0.689 to 0.709) 0.964 (0.962 to 0.966)
ICC (p-value) 0.450 (<0.001) 0.371 (<0.001) 0.393 (<0.001) 0.065 (<0.001) 0.955 (<0.001)

Data expressed as mean (SD). MAPE = Mean absolute percent error, MAE = Mean Absolute Error, rC = Lin’s Concordance Correlation Coefficient, ICC = Intraclass correlation coefficient.