Aim. To compare the type of left ventricular geometry associated with training among 12-17 years athletes currently competing in cycling, rowing and basketball playing and to determine the factors influencing left ventricular geometry. Methods. A total 167 male athletes 12-17 year-old, involved in basketball (n = 62), academic rowing (n =51) and cycling (n = 54) and 168 sedentary non-athletes, matched for age and sex were involved in this study. All participants underwent twodimensional, M-mode and Doppler echocardiography. To estimate left ventricular geometry relative wall thickness and left ventricular mass index were calculated. Left ventricular geometry was assessed as normal, eccentric ventricular hypertrophy, concentric left ventricular hypertrophy, concentric left ventricular remodeling. Results. Left ventricular hypertrophy was present in 48 % of all athletes, predominantly (34 %) eccentric hypertrophy. 16% of athletes had concentric hypertrophy. Only 7% of athletes manifested concentric remodeling. The prevalence of eccentric hypertrophy was more common in cyclists (54%), concentric hypertrophy was more frequent in rowers (38%), and normal left ventricular geometry was more common in basketball players (53%). Multivariate regression analysis showed that age was the important determinant of eccentric and concentric left ventricular hypertrophy. Eccentric left ventricular hypertrophy also was independently associated to training volume (hour per week) and cycling sporting discipline. Conclusion. Almost half of athletes (48%) had left ventricular hypertrophy, predominantly eccentric hypertrophy, and the age was the important determinant of left ventricular hypertrophy (eccentric and concentric). Training volume and cycling sporting discipline were significantly associated with eccentric left ventricular hypertrophy.
Keyword(s): children; athletes; left ventricle; geometry; hypertrophy.
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