A Theoretical Method of Using Heart Rate to Estimate Energy Expenditure during Exercise

Abstract

The American College of Sports Medicine advocates prescribing aerobic exercise intensities based upon target heart rate (THR); however, it advocates estimating oxygen uptake (V̇O2) using metabolic equations Derivations from metabolic equations presume metabolic responses for a given intensity and volume of exercise is exact for each athlete Conversely HR enables the coach to better estimate intensity and energy expenditure relative to an individual athlete's aerobic capacity. To develop estimates of V̇O2 and subsequent energy expenditure during exercise at THR, the coach must have actual or estimated rest and maximal HR and V̇O2 values, respectively. This methodological paper describes step-by-step procedures for calculating energy expenditure during exercise at a given THR. Procedures for estimating rest and maximal HR and V̇O2 values are provided to enable the coach an immediate means of implementing this technique into their practice. Quantification of energy expenditure aids the coach in monitoring individualized training responses and developing nutritional plans with input from a dietician