Cited by 78Muscle metabolism and nutritionCardiovascular and exercise physiologyMetabolism, Diabetes, and Cancer

Postexercise recovery of skeletal muscle malonyl-CoA, acetyl-CoA carboxylase, and AMP-activated protein kinase

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Rasmussen, B. B., Hancock, C. R., Winder, W. W.·1998·Journal of Applied Physiology

Abstract

Previous studies have demonstrated that oxygen consumption and fat oxidation remain elevated in the postexercise period. The purpose of this study was to determine whether malonyl-CoA, an inhibitor of fatty acid oxidation, remains depressed in muscle after exercise. Rats were sprinted for 5 min (40 m/min, 5% grade) or run for 30 min (21 m/min, 15% grade). Red quadriceps malonyl-CoA returned to resting values by 90 min postexercise in the sprinting rats and remained significantly lower at least 90 min postexercise in the 30-min exercise group. AMP-activated protein kinase activity remained significantly elevated ( P < 0.05) for 10 min after exercise in both groups. The most rapid rate of glycogen repletion was in the first 30 min postexercise. The respiratory exchange ratio decreased from a nonexercise value of 0.87 ± 0.01 to an average 0.82 ± 0.01 during the 90-min period after 30 min of exercise. Thus muscle malonyl-CoA remains depressed and fat oxidation is elevated for relatively prolonged periods after a single bout of exercise. This may allow fat oxidation to contribute more to muscle energy requirements, thus leaving more glucose for replenishment of muscle glycogen.

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Crossref · 10.1152/jappl.1998.85.5.1629

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  • AMPK is activated during exercise in both rodents and humans.

    “Consistent with this, AMPK is activated during exercise in both rodents and humans [51-60], in an intensity-dependent manner [57,59-61].”

    From AMPK and Exercise: Glucose Uptake and Insulin Sensitivity (2013) · cites this paper as [54]

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Authors
Rasmussen, B. B., Hancock, C. R., & Winder, W. W.
Affiliations
Brigham Young University (US)
Venue
Journal of Applied Physiology
Published
1998-11-01
Volume
85
Issue
5
Pages
1629-1634
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
OpenAlex
W2180234751
Cited by
78
References
32
Citations by year
2026: 1 · 2025: 2 · 2024: 3 · 2023: 1 · 2022: 2 · 2020: 4 · 2019: 1 · 2018: 1 · 2017: 3 · 2016: 2 · 2015: 4 · 2014: 3 · 2013: 2 · 2012: 2
FWCI
1.22
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Journal of Applied Physiology (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
National Institute of Arthritis and Musculoskeletal and Skin Diseases (R01AR041438, AR-41438)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
post-exercise recovery, skeletal muscle, malonyl-CoA, acetyl-CoA carboxylase, AMPK, fat oxidation, fatty acid oxidation inhibition, respiratory exchange ratio, sprint exercise, endurance exercise, exercise energy metabolism
MeSH terms
Acetyl-CoA Carboxylase, Animals, Blood Glucose, Physical Exertion, Fatty Acids, Nonesterified, Kinetics, Male, Malonyl Coenzyme A, Multienzyme Complexes, Protein Kinases, Pulmonary Gas Exchange, Rats, Sprague-Dawley, Protein Serine-Threonine Kinases, Muscle, Skeletal, Lactic Acid, Rats, AMP-Activated Protein Kinases

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