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Related Experiment Videos

Effect of physical training on breathing pattern during progressive exercise.

C McParland1, B Krishnan, J Lobo

  • 1Department of Medicine, University of Saskatchewan, Saskatoon, Canada.

Respiration Physiology
|December 1, 1992
PubMed
Summary

Short-term physical training does not alter breathing patterns during exercise. Endurance training in sedentary males did not significantly change tidal volume or breathing rate at matched ventilation levels, indicating no adaptation in breathing strategy.

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Area of Science:

  • Exercise Physiology
  • Respiratory Physiology

Background:

  • Previous suggestions indicate physical training may alter breathing patterns during exercise.
  • However, robust evidence supporting this claim is lacking.

Purpose of the Study:

  • To investigate the effect of short-term cycle endurance training on breathing patterns during maximal incremental exercise.
  • To determine if physical training induces a slower, deeper breathing pattern at a given ventilation level.

Main Methods:

  • Maximal incremental exercise testing on a cycle ergometer was performed in sedentary males before and after 3-4 weeks of training.
  • Breathing pattern, including tidal volume and breathing frequency, was assessed at matched ventilation (VI) levels.
  • A control group maintained unaltered physical activity to account for time effects.

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Main Results:

  • Physical training significantly increased peak oxygen uptake and reduced submaximal heart rate and minute ventilation.
  • No significant alterations in breathing pattern (tidal volume, breathing frequency) were observed at matched submaximal ventilation levels post-training.
  • The study possessed high statistical power to detect significant changes in tidal volume if they existed.

Conclusions:

  • Short-term, activity-specific physical training does not significantly alter the breathing pattern during progressive exercise in healthy, previously sedentary individuals.
  • The hypothesis that endurance training leads to a deeper, slower breathing pattern at a given ventilation is not supported by this study.