A tool used to determine personalized training intensity ranges based on individual physiological data like maximum heart rate (MHR) and resting heart rate (RHR), often expressed as a percentage of MHR. These ranges correspond to different physiological effects, from light aerobic activity to maximum effort. A sample calculation might use the Karvonen formula: Target Heart Rate = ((MHR RHR) %Intensity) + RHR.
Training within specific heart rate zones allows for optimized workout benefits. Working within the correct zone can improve cardiovascular fitness, fat-burning efficiency, and endurance performance. Historically, understanding of exercise intensity and its relation to heart rate has evolved, leading to more precise methods like this for personalized training. This understanding has revolutionized training methodologies for both amateur and professional athletes.