What is the Borg RPE Scale?
The RPE ( Rate of Perceived Exertion ) scale was devised by Borg and is a 15-point scale ranging from 6 to 20 with exertional descriptions at every odd number. The RPE response has been shown to correlate highly ( 80 – 90% ) with cardiorespiratory and metabolic variables such as breathing rate, oxygen uptake, blood lactate concentrations and heart rate.