Figure 4. The percentage of whole body and leg labelled carbon recovery from [1,2-¹³C]acetate.

Whole body acetate recovery is the percentage of ¹³CO₂ in expired air of the infused [1,2-¹³C]acetate, presented uncorrected and corrected for incomplete carbon dioxide recovery. Incomplete carbon dioxide recovery was determined in three of the five subjects as the ¹³CO₂ in expired air of infused sodium H¹³CO₃. Leg acetate carbon recovery is the percentage of ¹³CO₂ released from the leg of the [1,2-¹³C]acetate taken up by the leg. Leg incomplete carbon dioxide recovery was slightly below 100 % at rest and in recovery and slightly above 100 % during exercise but did not reach significance, therefore leg acetate carbon recovery is not corrected for incomplete ¹³CO₂ recovery (van Hall, 1999). Values are means ± s.e.m., n = 6.