Table 3.

Muscle contents of ATP, creatine, and phosphocreatineat rest and during exercise in control and respiratory alkalosis

				Exercise
Metabolite	Condition	Pre-equilibration	Rest	1 min	15 min
ATP	Con	ND	25.1 ± 2.2	24.6 ± 1.7	21.5 ± 1.8
	R-Alk	26.6 ± 1.8	27.0 ± 1.7	25.5 ± 1.6	22.7 ± 1.8
Creatine	Con	ND	30.8 ± 3.0	44.0 ± 3.2*	52.9 ± 3.2*
	R-Alk	38.0 ± 2.4	33.5 ± 2.2	45.3 ± 4.0*	56.4 ± 6.4*
Phosphocreatine	Con	ND	94.3 ± 2.0	75.3 ± 4.1*	71.9 ± 4.2*
	R-Alk	98.3 ± 6.0	97.2 ± 4.5	80.9 ± 5.1*	63.9 ± 4.3*

Values are means ±s.e.m. and are expressed as mmol (kg dry wt)⁻¹; ND, not determined.

^*Significant from rest.