This document describes the estimation method for oxygen consumption (VO2) developed by Firstbeat Technologies Ltd. The estimation is based on measurement of heart rate (HR), beat-by-beat R-R –derived respiration rate and on/off-response information derived from heart beat data.
VO2 is considered the most accurate variable to evaluate the intensity of aerobic activity. For example, the exercise intensity recommendations of the American College of Sports Medicine (ACSM 2001) are based on using VO2 as the reference measure.
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