Table 2.

Results of the unconstrained curve fitting of Eq. 4 to the (ΔG_p, V_PCr) data for the 6 subjects

	Qmax, mM/s	Qmin, mM/s	ΔGp,0.5, kJ/mol	nH
Subject
1	0.81	−0.04	−58.1	24.9
2	0.76	−0.02	−58.9	25.9
3	0.69	−0.09	−58.8	21.8
4	0.70	−0.04	−57.9	23.5
5	0.86	−0.03	−57.8	23.8
6	0.65	−0.03	−57.9	22.7
Means ± SD	0.74±0.08	−0.04±0.02	−58.2±0.5	23.8±1.5

Q_max, maximal net phosphocreatine (PCr) resynthesis flux; Q_min, minimal net PCr resynthesis flux; ΔG_p,0.5, molar free energy of cytosolic ATP hydrolysis at half-maximal V_PCr; n_H, Hill coefficient.