Table 3.

Muscle metabolite concentrations immediately after exercise and during an 18 h post-exercise recovery period

Metabolite	0 h	3h	6h	18 h
ATP	23.5 ± 0.9	25.0 ± 1.0	26.2 ± 1.1	27.0 ± 1.6†
PCr	64.4 ± 3.0	68.0 ± 3.0	69.2 ± 3.1	69.1 ± 4.8
Creatine	48.4 ± 3.1	44.8 ± 2.5	43.7 ± 2.0	43.8 ± 2.6
Acetyl CoA	22.0 ± 1.8	3.7 ± 1.0‡	9.5 ± 2.0†	7.3±0.8‡
Acetyl-carnitine	17.5 ± 2.7	1.9 ± 0.4‡	2.3 ± 0.6‡	3.0 ± 0.5‡
Pyruvate	0.34 ± 0.07	0.15 ± 0.03†	0.14 ± 0.05†	0.10 ± 0.01†

Values are means ±s.e.m., n = 8. All measurements are given in mmol (kg dry wt)⁻¹, except for acetyl CoA (μmol (kg dry wt)⁻¹). Significantly different from 0 h,

^†P < 0.01

^‡P < 0.001.