Heart Rate Recovery (Number of Beats)
This metric quantifies the number of beats by which an individual's heart rate decreases during a specified recovery period following exercise. It provides a quantifiable measure of how much the heart rate decreases in a pre-determined period of time post-exertion.
Formula:
Heart Rate Value (At Drill End Time) –
Heart Rate Value (After Recovery Duration Period From Drill End)
Complementing the absolute measure of heart rate recovery, this metric expresses the recovery as a percentage of the heart rate value recorded at the end of a selected exercise. It offers a standardized assessment of recovery efficiency.
Formula:
[Heart Rate Recovery (Number of Beats) / Heart Rate Value (At Drill End Time)] x 100
Within Sonra, the default heart rate recovery duration is 120 seconds.
This is customisable in the Sonra Settings page in the following location:
Settings > Calculations > Default Values
Example scenario
A player’s heart rate at the end of a 5 minute small sided game drill is 167 beats per minute (BPM) and after 120 seconds the heart rate has lowered to 121 BPM. The software will calculate heart rate recovery metrics as follows:
Heart Rate Recovery (Number of Beats)
167 BPM – 121 BPM = 46 Beats
Heart Rate Recovery (%)
(46 Beats / 167 BPM) * 100 = 27.54%