<原著>健康な学生にみられる不整脈の研究(第1報) : 心室性期外収縮と心拍数との関係

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We studied the physical fitness and the relationship between ventricular premature contraction (VPC) and heart rate (HR), using 24-hour ambulatory ECG recording in 13 healthy students, who were pointed out VPC at the annual health check in Spring, 1988. The maximum oxygen uptake (Vo2 max) was calculated by the modified Astrand method indirectely. Plots of VPC frequency vs. heart rate were made at 1-beat/min intervals for all heart rates that were recorded during 24 hours. The results were as follows; (1) Patterns of relationship between VPC frequency and heart rate observed include : (1) an increase of VPCs at high heart rate (positive correlation) in one student, (2) an increase at low heart rate and a decrease at high heart rate (bi-directional correlation) in 2 students. (3) a linear decrease (negative correlation) in 10 students. (2) Two students with positive correlation pattern or frequent couplets showed lower Vo2 max (26.6+-4.2ml/min/kg) than the other students with negative correlation pattern (41.2+-4.0ml/min/kg). These results suggest that positive correlation pattern or harmful types were rare in VPC of healthy young men and correlated with low physical fitness.
1989-03-31