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Anabolic androgenic steroids (AAS) may cause lasting muscle changes, like more myonuclei, potentially giving athletes an unfair advantage long after use stops. This raises ethical concerns about doping sanctions in sports.

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Area of Science:

  • Exercise Physiology
  • Sports Science
  • Biochemistry

Background:

  • Anabolic androgenic steroids (AAS) are widely abused performance-enhancing drugs.
  • Athletes using AAS face sanctions, typically up to 4 years.
  • Controversy exists regarding persistent physiological effects of AAS use after discontinuation.

Purpose of the Study:

  • To investigate the potential long-term physiological effects of AAS on muscle.
  • To explore the "muscle memory" theory in relation to AAS use.
  • To examine if past AAS use confers enduring advantages in athletes.

Main Methods:

  • Review of existing animal and human studies on AAS.
  • Analysis of evidence supporting the "muscle memory" theory.
  • Examination of myonuclei count changes post-AAS cessation.

Main Results:

  • Evidence suggests AAS administration can lead to a persistent increase in myonuclei number in muscles.
  • This elevated myonuclei count may enhance muscle remodeling and retraining capacity.
  • Potential for performance advantages in athletes long after AAS use has ceased.

Conclusions:

  • Persistent physiological adaptations, such as increased myonuclei, may result from AAS use.
  • These long-term effects could provide an unfair advantage to athletes even years after sanctions.
  • Confirmation of these findings raises significant ethical concerns and may necessitate reevaluation of doping regulations and sanctions.