一流運動選手の安静時心電図に関する研究
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Electrocardiographic studies were made on 676 excellent well-trained atheletes. The values of voltage and interval of each deflection were compared with normal value for the Japanese reported by Ueda et al. and were analysed statistically. The results obtained were as follows : 1) R-R intervals were longer in atheletes than in untrained controls. Sinus bradycardia was markedly observed in atheletes in their twenties. 2) P-Q interval showed no difference between the atheletes and controls in a younger than twenty years group while that was more increased in the former than the latter in an order than 20 years group. Abnormal P-Q prolongation i. e. over 0.2 sec. was more frequent in excellent atheletes than non-excellent atheletes in a younger than 20 years group. 3) QTc (corrected QT, measured QT/√<R-R>) proved considerably large in atheletes especially those of a 15-19 year old group. 4) There was observed a trend of delay of the ventricular activation time (V. A. T.) in the right precordial lead, but no delay in the left precordial lead. 5) The duration of P-deflection showed a trend of enlargement in an older than 20 years group unlike in a younger group. The duration of P-deflection increased generally as age advanced. The same trend was also observed for P/PQ segment (Macruz' index). These findings might suggest the present of left atrial enlargement, but they revealed neither left axis deviation in frontal plane nor mitral configuration of the P wave. They constituted a difficult problem explain. 6) R-deflection in the left precordial lead generally showed high voltage and especially in a younger group. In many of the atheletes studied SV_1+REV_5 and REV_5 corresponded to Sokolow & Lyon' criteria for left ventricular hypertrophy (SV_1+REV_5>__=35mm, REV_5>__=26mm), but those atheletes were without left axis deviation in frontal plane. In many of the atheletes were without left axis deviation in frontal plane. In many of the athletes R-deflection in the right precordial lead showed high voltage with a considerably correspondence to Sokolow & Lyon's criteria for right ventricular hypertrophy (R/S V_1>1. 0, REV_1>__=7mm), and these atheletes revealed delayed V. A. T. in the right precordial lead. The physiological right bundle branch block (Reindell) was also commonly observed, thus there was suggested the presence of right ventricular hypertrophy or overloading, but no right axis deviation was encountered. It was assumed that a hard training might effect the right ventricle if not produced a pathological ventricular hypertrophy. 7) Atheletes in their twenties and thirties showed high voltage in T-deflection especially in V_5, but they revealed almost the same T/R ratio as controls. 8) Abnormal ECG findings wree higher in an excellent group than a non-excellent group or an under-trained group.
- 日本体力医学会の論文
- 1965-09-01
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- 一流運動選手の安静時心電図に関する研究