Indexed left ventricular ( LV ) and right ventricular ( RV ) volume ( LV , @-@ @ ; RV , @-@ @ ) and mass ( LV , @-@ @ ; RV , @-@ @ ) significantly increased with HI ( I ) T. Changes in LV and RV morphological parameters with HI ( I ) T were highly correlated with an increase in maximal aerobic capacity ( VO@max ) and a decrease in blood lactate concentration at the anaerobic threshold .