Listen to Your Heart An example calculation using the Standard Method for a 20-year-old for a desired aerobic intensity of 75% would be: Standard Target HR = % of aerobic intensity/100 * (Maximum HR) = 0.75 * (220 - 20) = 150 An example calculation using the Karvonen Method for a 20-year-old with a resting heart rate of 60 bpm for a desired aerobic intensity of 75% would be: Karvonen Target HR = % of aerobic intensity/100 * (Maximum HR - Resting HR) + Resting HR = 0.75 * (220-20-60) + 60 = 165 Courtesy of INTERNATIONAL FITNESS ASSOC. www.ifafitness.com Fitness Training Manual version 5.9, written by Chuck Krautblatt Copyright 1995, 1998, 2000 by IFA