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• SomeElectrocardiogram(EKG)signalsgeneratedbyindividualsarenotstrongenoughtobe
detected by the sensors.
• Theproximityofotherelectronicmachinescangenerateinterference.
CHRdetectionmaybelimitedtowalkingorslowjoggingduetotheextrememuscleartifactsand
hand motion generated by a comfortable running style. If your heart rate signal ever seems erratic
after validation, wipe off your hands and the sensors and try again.
Heart Rate Calculations
Yourmaximumheartrateusuallydecreasesfrom220BeatsPerMinute(BPM)inchildhood
toapproximately160BPMbyage60.Thisfallinheartrateisusuallylinear,decreasingby
approximatelyoneBPMforeachyear.Thereisnoindicationthattraininginfluencesthedecrease
inmaximumheartrate.Individualsofthesameagecouldhavedifferentmaximumheartrates.Itis
more accurate to find this value by completing a stress test than by using an age related formula.
Your at-rest heart rate is influenced by endurance training. The typical adult has an at rest heart
rateofapproximately72BPM,whereashighlytrainedrunnersmayhavereadingsof40BPMor
lower.
The Heart Rate table is an estimate of what Heart Rate Zone (HRZ) is effective to burn fat and
improve your cardiovascular system. Physical conditions vary, therefore your individual HRZ could
be several beats higher or lower than what is shown.