Table 2.

Metrics of of mechanical energy utilization and CK energy supply (shaded) measured in healthy and HF patients

Values are mean ± SD. ^aSignificantly reduced vs. healthy subjects. Abbreviations: SW stroke work, PE potential energy, PVA total mechanical energy; Mech. Eff. =mechanical efficiency; p_av and p_p are the average and peak stroke power, respectively; k_f = pseudo-first-order creatine kinase (CK) reaction-rate rate constant. [PCr] and [ATP] are the respective concentrations of myocardial phosphocreatine and adenosine triphosphate