A comparison of PGC-1α mRNA and protein expression in response to 1-week endurance training on alternate days or 4 consecutive days

Appl Physiol Nutr Metab. 2015 Nov;40(11):1210-3. doi: 10.1139/apnm-2015-0222. Epub 2015 Aug 5.

Abstract

To understand the molecular mechanisms of adaptation to different training protocols, this study compared the effects of 4 sessions of 90 min treadmill exercise on alternate days or consecutive days in 1 week on messenger RNA (mRNA) and protein expression of proliferator-activated receptor-γ coactivator 1-α in rat gastrocnemius muscle. The mRNA significantly increased by 25.8-fold after alternate-day and 10.1-fold after consecutive-day training, while the protein showed no significant cumulative effect, 1.5-1.7-fold above baseline, in the 2 protocols.

Keywords: ARNm; PGC-1α; endurance training; entraînement en endurance; gastrocnemius; mRNA; muscle gastrocnémien; protein; protéine; recovery; récupération.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adaptation, Physiological
  • Animals
  • Male
  • Muscle Contraction*
  • Muscle, Skeletal / metabolism*
  • Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha
  • Physical Endurance*
  • RNA, Messenger / genetics
  • RNA, Messenger / metabolism*
  • Rats, Sprague-Dawley
  • Running
  • Time Factors
  • Transcription Factors / genetics
  • Transcription Factors / metabolism*
  • Up-Regulation

Substances

  • Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha
  • Ppargc1a protein, rat
  • RNA, Messenger
  • Transcription Factors