PMID: 696819Sep 1, 1978Paper

Splanchnic glucose and muscle glycogen metabolism after glucose feeding during postexercise recovery

The American Journal of Physiology
S MaehlumJ Wahren

Abstract

Glucose (100 g) was ingested 15 min after bicycle exercise until exhaustion at a work load corresponding to 70% of maximal uptake (series 1), 14--15 h after an identical exercise period, no food being taken in the interval (series 2), and by nonexercised control subjects. Splanchnic glucose output in the exercised groups rose to values 50--300% greater than in controls, amounting to (over 135 min) 59 +/- 5 g in series 1 and 58 +/- 6 in series 2 compared to 28 +/- 6 in controls. The glycogen concentration of quadriceps muscle in series 1 was 65 +/- 2 mmol glycosyl U/kg wet wt before exercise, 16 +/- 13 at the end of work, and 32 +/- 4 at 135 min after glucose ingestion. In series 2, muscle glycogen concentration was 20 +/- 3 immediately after exercise and rose to 44 +/- 5 over the ensuing 14--15 h in spite of continued fasting. It rose to 56 +/- 3 at 135 min after glucose loading. Repletion of leg muscle glycogen after glucose feeding could account for 50--66% of total splanchnic glucose release. It is concluded that during postexercise recovery, a greater proportion of an oral glucose load escapes hepatic retention, allowing repletion of muscle glycogen to take precedence over hepatic glycogen repletion.

References

Nov 1, 1976·Journal of Applied Physiology·G Ahlborg, P Felig
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Jun 1, 1973·Journal of Applied Physiology·J WahrenG Ahlborg
Jun 1, 1974·The American Journal of Physiology·R L TerjungJ O Holloszy
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Sep 1, 1967·Journal of Applied Physiology·J S Fordtran, B Saltin

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Citations

May 1, 2007·Annual Review of Nutrition·John Wahren, Karin Ekberg
Mar 14, 2007·American Journal of Physiology. Heart and Circulatory Physiology·Piotr Liguzinski, Bernard Korzeniewski
Jan 13, 2006·American Journal of Physiology. Endocrinology and Metabolism·Aine M O'ConnorJohn P Kirwan
May 23, 2006·Journal of Applied Physiology·Tracy J HortonW Troy Donahoo
Jan 25, 2020·Nutrients·Anne-Marie LundsgaardBente Kiens
Dec 12, 2017·Journal of Nutritional Science and Vitaminology·Yumiko TakahashiHideo Hatta
Nov 10, 2021·The Biochemical Journal·Erik A RichterMark Hargreaves

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