Table 2.

Muscle contents of glycolytic intermediates at rest and during exercise in control and respiratory alkalosis

				Exercise
Metabolite	Condition	Pre-equilibration	Rest	1 min	15 min
Glycogen	Con	ND	439 ± 41	ND	333 ± 38*
	R-Alk	ND	538 ± 47	ND	346 ± 70*
G-1-P	Con	ND	0.17 ± 0.09	0.08 ± 0.02	0.30 ± 0.13
	R-Alk	0.13 ± 0.11	0.09 ± 0.05	0.11 ± 0.07	0.12 ± 0.10
G-6-P	Con	ND	0.95 ± 0.14	2.03 ± 0.39	2.23 ± 0.42
	R-Alk	1.01 ± 0.13	0.90 ± 0.12	1.18 ± 0.22	4.33 ± 0.82*
F-6-P	Con	ND	0.20 ± 0.05	0.63 ± 0.20*	0.30 ± 0.06
	R-Alk	0.16 ± 0.05	0.05 ± 0.06	0.19 ± 0.07†	0.47 ± 0.09*
Gly-3-P	Con	ND	0.47 ± 0.01	0.53 ± 0.01	0.51 ± 0.01
	R-Alk	0.51 ± 0.01	0.50 ± 0.01	0.61 ± 0.11*	0.53 ± 0.07*†
Pyruvate	Con	ND	0.49 ± 0.07	0.53 ± 0.06	0.43 ± 0.06
	R-Alk	0.43 ± 0.05	0.58 ± 0.09	0.51 ± 0.10	0.49 ± 0.15
Lactate	Con	ND	6.4 ± 1.5	11.3 ± 1.8	13.9 ± 2.2*
	R-Alk	3.6 ± 0.7	8.1 ± 1.6	20.1 ± 3.5*†	18.7 ± 4.3*

Values are means ±s.e.m. and are expressed in mmol (kg dry wt)⁻¹; G-1-P, glucose 1-phosphate; G-6-P, glucose 6-phosphate; F-6-P, fructose 6-phosphate; Gly-3-P, glycerol 3-phosphate; ND, not determined.

^*Significant from rest

^†significant from control.