Direct estimation of cardiac reserve through analysis of relation between oxygen consumption and heart rate during exercise testing

Abstract

In order to elucidate fundamental relationship between exercise and cardiac reserve, we investigated the parameters ofregression equation (V02 = A.HR + B) between oxygen consumption (V02 ml/kg/min) and heart rate (HR) during exercise test (Bruce). 62 male children were devided into 3 groups based on history and clinical evaluation. HR related linearly with V02 (average r = 0.967, range 0.90~0.993). Both of the parameters A and |B| were significantly high in Athlete(A = 0.465 ± 0.043, |B| = 36 ± 6.07), low in Failed (0.297 ± 0.055, 17.4 ±6.1) and middle in Ordinary group (0.366 ± 0.078, 23.5 ± 8.6) (p < 0.005). © 1985, The Japanese Circulation Society. All rights reserved.