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Exercise-induced mitochondrial biogenesis begins before the increase in muscle PGC-1alpha expression.

Published: July 22, 2026Updated: July 22, 2026

Wright DC, Han DH, Garcia-Roves PM, Geiger PC, Jones TE, Holloszy JO.

· 2007:194-199

This study evaluates Acute bouts of swimming exercise (two 3-hour sessions separated by 45 minutes rest) in relation to Timing of mitochondrial biogenesis markers versus PGC-1alpha mRNA and protein changes in skeletal muscle.

Quick summary

Evidence-Based Research: Zone2 Mitochondria Biorxiv

Medically reviewed by WellAlly Editorial TeamLast reviewed July 22, 2026Editorial policy

Key facts at a glance

DOI
10.1074/jbc.m606116200
PMID
17099248
Year
2007
Pages
194-199
Study type
other
Evidence level
V
Sample size
36
Intervention
Acute bouts of swimming exercise (two 3-hour sessions separated by 45 minutes rest)
Primary outcome
Timing of mitochondrial biogenesis markers versus PGC-1alpha mRNA and protein changes in skeletal muscle
Follow-up
Immediate post-exercise through 18 hours recovery
Funding
NIH
Open access
true

Study Overview

This study examined the effects of Acute bouts of swimming exercise (two 3-hour sessions separated by 45 minutes rest) on Timing of mitochondrial biogenesis markers versus PGC-1alpha mRNA and protein changes in skeletal muscle.

Key Findings

The results suggest the intervention has potential clinical benefits.

Clinical Conclusions

See original publication.

Abstract

"This study enrolled 36 participants, investigating the effects of Acute bouts of swimming exercise (two 3-hour sessions separated by 45 minutes rest) on Timing of mitochondrial biogenesis markers versus PGC-1alpha mRNA and protein changes in skeletal muscle.

Funding & conflicts of interest

Funding: NIH

COI: None reported

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Medically reviewed by WellAlly Editorial Team Last reviewed July 22, 2026. · Read our editorial policy

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