Table 1. Resting values and changes from rest (delta) for PCr, Pi/PCr and pH.

		WPHF	CONV	VOL
Responders	Resting PCr (mM)	20.7 ± 5.4	22.7 ± 6.2	21.8 ± 5.9
	Resting Pi (mM)	5.2 ± 1.3	5.4 ± 1.3	5.0 ± 1.4
	Resting Pi/PCr	0.34 ± 0.06	0.33 ± 0.05	0.31 ± 0.05
	Resting pH	6.95 ± 0.04	6.95 ± 0.02	6.97 ± 0.03
	Delta PCr (mM)	3.4 ± 0.9	3.2 ± 1.0	1.7 ± 0.7 §
	End-protocol Pi/PCr	0.53 ± 0.12	0.51 ± 0.05	0.40 ± 0.05 §
	Delta pH	-0.03 ± 0.04	0.00 ± 0.04	-0.01 ± 0.02
Non-responders	Resting PCr (mM)	23.9 ± 7.1	22.5 ± 6.6	24.2 ± 5.8
	Resting Pi (mM)	5.4 ± 1.5	4.9 ± 1.3	5.1 ± 1.3
	Resting Pi/PCr	0.35 ± 0.10	0.34 ± 0.07	0.32 ± 0.08
	Resting pH	6.98 ± 0.04	6.97 ± 0.04	6.98 ± 0.03
	Delta PCr (mM)	2.4 ± 1.2	2.9 ± 1.6	2.3 ± 1.0 §
	End-protocol Pi/PCr	0.38 ± 0.08	0.44 ± 0.08	0.39 ± 0.07 §
	Delta pH	0.01 ± 0.04	-0.01 ± 0.03	0.00 ± 0.03

^§ Significantly different from NMES (P< 0.05), independently of the group.