Physiological Significance of the Slope of the Regression Equation between Oxygen Consumption and Heart Rate in Exercise Testing : THE 8TH CONFERENCE ON PRVENTION FOR RHEUMATIC FEVER AND RHEUMATIC HEART DISEASE

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The relationship between oxygen consumption (VO_2) and heart rate (HR) was studied in 62 male children. Based on clinical evaluation and history, they were divided into three groups, i.e., athlete, ordinary and failed. There was a high linear correlation between HR and VO_2 in each individual. The averaged values of the slope and standard deviations were 2.09±0.189 in the athlete group (n=17), 2.60±0.140 in the ordinary group (n=16) and 3.17±0.591 in the failed group (n=29). The statistical differences were confirmed among the groups (p<0.005). The results suggested that the slope of the HR vs. VO_2 relation was related to an inotropic state of cardiac function. We concluded that the slope was a more suitable and more direct evaluation of cardiac function during exercise. Moreover, the method was non-invasive and safe because it required no potentially hazardous maximum work load for the patients.
社団法人日本循環器学会の論文
1984-12-20