Effects of Pre-Exercise Photobiomodulation Therapy on Muscle Endurance and Exercise Performance

Objective

Researchers investigated whether photobiomodulation therapy (PBMT) applied before exercise could improve muscular endurance, delay fatigue, and enhance exercise performance. The study focused on the use of red and near-infrared light as a pre-conditioning strategy to prepare muscles for physical activity.

Study Design

Participants received photobiomodulation treatment before exercise and were compared with placebo/control conditions.

Researchers evaluated:

  • Exercise performance
  • Muscular endurance
  • Fatigue development
  • Recovery-related outcomes
  • Functional muscle capacity

The goal was to determine whether PBMT could improve performance during exercise rather than only assisting recovery afterward.

What Researchers Measured

The study assessed:

  • Number of repetitions completed
  • Muscle endurance capacity
  • Exercise tolerance
  • Fatigue resistance
  • Performance output during exercise

Researchers analyzed whether light therapy could help muscles sustain performance for longer periods before fatigue occurred.

Key Findings

Researchers found that photobiomodulation therapy applied before exercise was associated with:

  • Improved muscular endurance
  • Increased exercise performance
  • Greater resistance to fatigue
  • Better maintenance of muscle function during activity

Participants receiving PBMT demonstrated improved performance outcomes compared with placebo conditions.

How Red Light May Improve Performance

Researchers explain that photobiomodulation works by stimulating mitochondrial activity inside muscle cells.

Potential mechanisms include:

  • Increased ATP (cellular energy) production
  • Enhanced oxygen utilization
  • Improved muscle metabolism
  • Reduced oxidative stress
  • Greater cellular energy availability during exercise

These effects may help muscles perform more efficiently and delay fatigue during physical activity.

Why Pre-Exercise Application Matters

One of the most important findings in sports photobiomodulation research is that treatment before exercise may act as a form of muscle pre-conditioning.

Researchers suggest that pre-exercise PBMT may:

  • Prepare muscles for physical stress
  • Improve exercise readiness
  • Enhance endurance performance
  • Support sustained muscular output

This makes photobiomodulation attractive for athletes, fitness enthusiasts, and individuals seeking performance support before training sessions.

Athletic Performance Implications

The findings support the growing use of red and near-infrared light therapy in:

  • Strength training
  • Resistance exercise
  • Endurance sports
  • High-intensity training
  • Recovery-focused athletic programs

Improved endurance and reduced fatigue may help athletes maintain higher-quality training sessions and better overall performance.

Conclusion

Researchers concluded that pre-exercise photobiomodulation therapy may improve muscular endurance and exercise performance. The findings add to the growing body of evidence supporting red and near-infrared light therapy as a non-invasive tool for performance enhancement and fatigue reduction.

https://pubmed.ncbi.nlm.nih.gov/38758297/

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