... with the aerobic capacity of the locomotor muscles determined by the complex of mitochondria and capillary blood. These are stressed to the limit at V̇ O 2max . The heart also adjusts to the needs for oxygen supply determined by this aerobic capacity of muscle: it does so by increasing heart frequency...

... endothermy metabolic biochemistry locomotor muscle cardiac muscle aerobic capacity anaerobic capacity temperature citrate synthase creatine phosphokinase lactate dehydrogenase Recent works have documented the high degree of evolutionary convergence between sharks in the family Lamnidae...