Heart rate reserve

Older age linked to smaller, longer heart rate excursions

Mean excursion amplitude was approximately 40 bpm at age 40 versus 32 bpm at 80; duration was approximately 90 versus 104 minutes, respectively.Mean excursion amplitude was approximately 40 bpm at age 40 versus 32 bpm at 80; duration was approximately 90 versus 104 minutes, respectively.