In this study, the cardiac structure and function in 102 athletes with high voltage of left ventricle inECG were examined by echocardiogtaphy, apexcardiography, systolic time intervals, X-ray cardiac measure-ment and physical work capacity tests. The parameters obtained were compared with those of 110 athletes withnormal voltage of left ventricle. Results showed no significant difference between these two groups either in cardiac structure (LYID,PWT, IYST) or in catdiac function (STI's, SV, EF, Vcf, PWV). The results of this study may be ofpractical value to the work of medical supervision and physical training.

In order to determine the pathophysiologic significance of electrocardiographic ventricular hypertrophy in athletes (LVH ath), echocardiographic measurements of left ventricular mass (LVM) were performed on 50 LVH ath. and 50 non-LVH matched ath. They were members of National Teams of track and field, swimming, football and cycling, with an average age of 20.74?3.3 years. Anatomic validation of the method was used for calculation of LVM in this study. Comparisons of LVM were made between LVH ath. and non-LVH ath., and between non-LVH ath. and the untrained:LVM=1.04?[(LVID+PWT+IVST)~3-(LVID)~3]-14Results showed no significant difference of LVM between LVH ath. and non-LVH ath. while LVM of non-LVH ath. were considerably greater than that of the untrained (P