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Exercise and Muscle Performance01:27

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Updated: Mar 24, 2026

A Murine Model of Muscle Training by Neuromuscular Electrical Stimulation
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Skeletal Muscle Hypertrophy with Concurrent Exercise Training: Contrary Evidence for an Interference Effect.

Kevin A Murach1, James R Bagley2

  • 1Center for Muscle Biology, University of Kentucky, MS-508 Chandler Medical Center, 800 Rose Street, Lexington, KY, 40508, USA. kmu236@g.uky.edu.

Sports Medicine (Auckland, N.Z.)
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PubMed
Summary

Concurrent exercise training does not always interfere with muscle growth. Recent research indicates that combining aerobic and resistance exercise may enhance hypertrophy under specific conditions.

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Area of Science:

  • Exercise Physiology
  • Muscle Hypertrophy
  • Sports Science

Background:

  • The traditional view posits that concurrent exercise training hinders muscle hypertrophy.
  • This article re-examines the evidence for interference effects in humans.
  • Recent studies challenge the long-held belief of interference.

Discussion:

  • Evidence suggests the interference effect of concurrent training on muscle growth is less pronounced than previously assumed.
  • Acute and chronic interference effects are critically analyzed.
  • Factors influencing the interaction between aerobic and resistance exercise are explored.

Key Insights:

  • Concurrent exercise may not impede, and can potentially enhance, resistance exercise-induced hypertrophy.
  • The "interference effect" is context-dependent and not universally applicable.
  • Optimizing concurrent training strategies is crucial for maximizing muscle gains.

Outlook:

  • Further research is needed to elucidate the precise mechanisms behind concurrent training's effects.
  • Practical recommendations for athletes and trainers are provided.
  • This work aims to refine training protocols for enhanced skeletal muscle adaptations.