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Does hyperbaric oxygen exposure affect high-intensity, short-duration exercise performance?

Ralph Rozenek1, Brennan F Fobel, Jerry C Banks

  • 1California State University Long Beach, Long Beach, California 90840, USA. rrozenek@csulb.edu

Journal of Strength and Conditioning Research
|December 14, 2007
PubMed
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Acute hyperbaric oxygen (HBO) exposure, breathing 100% oxygen at increased pressure, did not significantly impact high-intensity exercise performance. Studies on treadmill running and bench pressing showed no improvements in physiological responses or endurance.

Area of Science:

  • Sports Medicine
  • Physiology
  • Hyperbaric Medicine

Background:

  • Hyperbaric oxygen (HBO) therapy involves breathing pure oxygen at elevated pressures.
  • This increases plasma oxygen content, potentially affecting physiological responses during exercise.
  • The impact of acute HBO on high-intensity exercise performance remains unclear.

Purpose of the Study:

  • To investigate the effects of acute hyperbaric oxygen exposure on physiological responses.
  • To determine the impact of acute HBO on maximal lower and upper extremity exercise performance.
  • To assess performance in short-term, high-intensity exercise following HBO exposure.

Main Methods:

  • Two double-blinded, randomized experiments were conducted.
  • Experiment 1: 9 subjects performed maximal treadmill running for 1-2 minutes.

Related Experiment Videos

  • Experiment 2: 9 different subjects performed maximal repetitive bench presses for 1-2 minutes.
  • Subjects received either 1-hour HBO (100% O2 at 2.0 ATA) or sham exposure (ambient air at 1.2 ATA) before exercise.

    • Main Results:

    • No significant differences were found in postexercise blood lactate concentrations.
    • Peak heart rate and ratings of perceived exertion were not significantly affected.
    • Performance metrics, including treadmill running time and number of bench press lifts, showed no significant changes.
    • Acute HBO exposure did not alter key physiological markers or performance outcomes.

    Conclusions:

    • Acute hyperbaric oxygen exposure does not appear to enhance physiological responses or performance.
    • High-intensity exercise performance (running, lifting) was unaffected by pre-exercise HBO.
    • Unlike other oxygen-increasing methods, acute HBO shows no significant benefit for subsequent intense physical activity.