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Acute adaptation to low volume eccentric exercise.

D Paddon-Jones1, P J Abernethy

  • 1School of Human Movement Studies, The University of Queensland, Brisbane, Queensland, 4072, Australia. djpaddon@utmb.edu

Medicine and Science in Sports and Exercise
|July 11, 2001
PubMed
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A brief bout of low-volume eccentric exercise, even without causing muscle damage, can significantly improve recovery from subsequent strenuous eccentric exercise. This protective effect enhances muscle adaptation.

Area of Science:

  • Exercise Physiology
  • Muscle Adaptation
  • Sports Science

Background:

  • Eccentric exercise can cause muscle damage, but repeated bouts can reduce symptoms.
  • Previous research focused on repeated damaging bouts for adaptation.

Purpose of the Study:

  • To investigate if a non-damaging, low-volume eccentric exercise bout confers a protective effect.
  • To determine if familiarization with eccentric contractions enhances recovery.

Main Methods:

  • Three groups: control (CON), eccentric exercise (ECC), low-volume familiarized eccentric exercise (LV+ECC).
  • LV+ECC group performed 6 maximal eccentric contractions in familiarization sessions.
  • Main bout: 36 maximal eccentric contractions of elbow flexors; assessed muscle damage and recovery markers.

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Main Results:

  • Low-volume eccentric bouts did not cause muscle damage.
  • The LV+ECC group showed faster recovery in most variables (e.g., torque, girth) compared to CON and ECC.
  • Muscle soreness and concentric torque recovery were not significantly improved in the LV+ECC group.

Conclusions:

  • Adaptation to eccentric exercise is possible without significant muscle damage.
  • A small number of non-damaging eccentric contractions improve recovery from damaging bouts.
  • The observed adaptation is specific to eccentric contractions, not concentric ones.