Cited by 158Cardiovascular and exercise physiologyExercise and Physiological ResponsesMuscle metabolism and nutrition

Rapid exercise-induced changes in PGC-1α mRNA and protein in human skeletal muscle

Mathai, Anila S., Bonen, Arend, Benton, Carley R., Robinson, D. L., Graham, Terry E.·2008·Journal of Applied Physiology

Abstract

The mRNA of the nuclear coactivator peroxisome proliferator-activated receptor-γ coactivator-1α (PGC-1α) increases during prolonged exercise and is influenced by carbohydrate availability. It is unknown if the increases in mRNA reflect the PGC-1α protein or if glycogen stores are an important regulator. Seven male subjects [23 ± 1.3 yr old, maximum oxygen uptake (V̇o 2 max) 48.4 ± 0.8 ml·kg−1·min−1] exercised to exhaustion (∼2 h) at 65% V̇o 2 max followed by ingestion of either a high-carbohydrate (HC) or low-carbohydrate (LC) diet (7 or 2.9 g·kg−1·day−1, respectively) for 52 h of recovery. Glycogen remained depressed in LC ( P < 0.05) while returning to resting levels by 24 h in HC. PGC-1α mRNA increased both at exhaustion (3-fold) and 2 h later (6.2-fold) ( P < 0.05) but returned to rest levels by 24 h. PGC-1α protein increased ( P < 0.05) 23% at exhaustion and remained elevated for at least 24 h ( P < 0.05). While there was no direct treatment effect (HC vs. LC) for PGC-1α mRNA or protein, there was a linear relationship between the changes in glycogen and those in PGC-1α protein during exercise and recovery ( r = −0.68, P < 0.05). In contrast, PGC-1β did not increase with exercise but rather decreased ( P < 0.05) below rest level at 24 and 52 h, and the decrease was greater ( P < 0.05) in LC. PGC-1α protein content increased in prolonged exercise and remained upregulated for 24 h, but this could not have been predicted by the changes in mRNA. The β-isoform declined rather than increasing, and this was greater when glycogen was not resynthesized to rest levels.

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Crossref · 10.1152/japplphysiol.00847.2007

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  • A single bout of endurance exercise induces a rapid and sustained increase in PGC-1α gene and protein in skeletal muscle.

    “A single bout of endurance exercise induces a rapid and sustained increase in PGC-1α gene and protein in skeletal muscle (Mathai et al., 2008), whereas muscle-specific overexpression of PGC-1α results in a large increase in functional mitochondria (Lin et al., 2002).”

    From Concurrent exercise training: do opposites distract? (2017) · cites this paper as Mathai et al., 2008

  • Other studies could not confirm this and found no differences between a high- and a low-carbohydrate intake during recovery.

    “Other studies, however, could not confirm this and found no differences between a high- and a low-carbohydrate intake during recovery [58–60].”

    From Periodized Nutrition for Athletes (2017) · cites this paper as [58]

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Authors
Mathai, A. S., Bonen, A., Benton, C. R., Robinson, D. L., & Graham, T. E.
Affiliations
University of Guelph (CA)
Venue
Journal of Applied Physiology
Published
2008-10
Volume
105
Issue
4
Pages
1098-1105
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
OpenAlex
W2140292209
Cited by
158
References
60
Citations by year
2026: 2 · 2025: 9 · 2024: 10 · 2023: 5 · 2022: 8 · 2021: 9 · 2020: 5 · 2019: 9 · 2018: 8 · 2017: 15 · 2016: 6 · 2015: 10 · 2014: 11 · 2013: 4 · 2012: 10
FWCI
35.14
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Muscle metabolism and nutrition
Keywords
PGC-1α, PGC-1β, skeletal muscle, prolonged exercise, exercise-induced gene expression, glycogen resynthesis, carbohydrate availability, low-carbohydrate diet, mRNA-protein correlation, post-exercise recovery
MeSH terms
Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha, Adult, Blood Glucose, Carrier Proteins, Dietary Carbohydrates, Fatty Acids, Nonesterified, Glycogen, Heat-Shock Proteins, Humans, Insulin, Male, Muscle Contraction, RNA, Messenger, Time Factors, Transcription Factors, Exercise, RNA-Binding Proteins, Muscle, Skeletal, Cross-Over Studies, Recovery of Function, Diet, Carbohydrate-Restricted

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