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Table 2 Metrics of of mechanical energy utilization and CK energy supply (shaded) measured in healthy and HF patients

From: Cardiac work is related to creatine kinase energy supply in human heart failure: a cardiovascular magnetic resonance spectroscopy study

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