Fig. 2From: Cardiovascular magnetic resonance assessment of acute cardiovascular effects of voluntary apnoea in elite diversLeft ventricular changes during apnoea. a) LV volumes: left ventricular volumes. b) LVEF: left ventricular ejection fraction, c) HR: heart rate, d) LVCO: left ventricular cardiac output (*p = < 0.05; **p = < 0.01; ***p = < 0.001; ****p = < 0.0001). Values are expressed as mean ± standard deviationBack to article page