Table 3 Pearson correlation coefficients (r) of HR mean values between Biopac (GS), Apple Watch (AW) and Polar Vantage (PV) systems for the four activities (n = 18).

From: Agreement between two photoplethysmography-based wearable devices for monitoring heart rate during different physical activity situations: a new analysis methodology

Activity

Lying

Sitting

Standing

Walking

Wearable

Apple (AW)

Polar (PW)

Apple (AW)

Polar (PW)

Apple (AW)

Polar (PW)

Apple (AW)

Polar (PW)

Biopac (GS)

1.000**

.998**

.999**

.950**

.998**

.925**

.998**

.652*

Apple (AW)

–

.998**

–

.960**

–

.929**

–

.677*

  1. Significant differences: *p < .01; **p < .001**
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