Table 1 Nomenclature

C

Buffer capacity of the CK system

mol² kJ^-1

C _Mb

Myoglobin concentration

μM

CR_tot

Total creatine pool in myocardium

mmol (l cytoplasm water)^-1

ΔG_ATPase

Cytoplasmic ATP hydrolysis potential

kJ mol^-1

$\left|\Delta {\overline{G}}_{\text{ATPase}}\right|$

Average magnitude of cytoplasmic ATP hydrolysis potential

kJ mol^-1

$\Delta G_{\text{ATPase}}^{\text{o'}}$

Transformed Gibbs free energy of ATP hydrolysis

kJ mol^-1

ΔΨ

Mitochondrial inner membrane potential

mV

G

Blood flow

ml min^-1 (g tissue)^-1

HR

Heart rate

beats min^-1

I

Ionic strength

M

J _ANT

Mitochondrial ANT transport flux

mmol sec^-1 (liter mito)^-1

J _ATPase

Cytoplasmic ATP consumption rate

mmol sec^-1 (liter cell)^-1

MVO ₂

Oxygen consumption rate

μmol min^-1 (g tissue)^-1

$P_{{\text{O}}_{\text{2}}\text{,cell}}$

Partial oxygen pressure in myocardium

mmHg

P _{50, Mb}

Half-saturation partial pressure for the oxygen-myoglobin binding

mmHg

R

Gas constant

kJ mol^-1 K^-1

S _Mb

Myoglobin saturation

unitless

T

Temperature

K

t

Time

second