Table 2. Descriptive statistics of criterion measure and the three Polar sensor measurements.

	Minimum HR (bpm)	Maximum HR (bmp)	Mean ± SD (bpm)
ECGHR	54	178	112.15 ± 24.52
PLFA	52	180	112.42 ± 24.52
PLUA	53	180	112.47 ± 24.47
PLTM	52	181	112.43 ± 24.50