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Figure 2 Myocardial mass, myocardial mass index (myocardial mass divided by body surface area) and ratio of left ventricular (LV) to right ventricular (RV) mass (ratio LVM/RVM) in endurance athletes (A) and untrained control subjects (C). Data are expressed as the mean value ± SD. Error bars represent 95% confidence intervals. ***p < 0.001 (paired t test).