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Gender differences in workload effect on coordination between breathing and cycling.

Magdalena Seebauer1, Marguerite-Anne Sidler, Jana Kohl

  • 1Institute of Physiology, University of Zurich, Zurich, Switzerland. seebauer@access.unizh.ch

Medicine and Science in Sports and Exercise
|March 6, 2003
PubMed
Summary

Men show increased breathing-cycling coordination with higher exercise intensity, while women do not. This gender difference in cardiorespiratory coordination was observed during incremental workload tests.

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Area of Science:

  • Exercise Physiology
  • Cardiorespiratory Control
  • Human Movement Science

Background:

  • Breathing and cycling rhythms can synchronize during exercise.
  • The influence of exercise intensity on this coordination may differ between sexes.

Purpose of the Study:

  • To investigate gender differences in the coordination between breathing and cycling rhythms.
  • To determine how increasing workload and metabolic drive affect this coordination.

Main Methods:

  • Twenty-one men and 21 women performed cycling tests at 55%, 75%, and 95% of peak oxygen uptake (V02peak).
  • Leg movements, respiratory parameters, and heart rate were recorded.
  • Breathing-cycling coordination (%coord) was quantified as the percentage of breaths initiated during the leg cycle.

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Main Results:

  • In men, %coord significantly increased with workload intensity.
  • In women, %coord remained unaffected by exercise intensity.
  • No gender differences in breathing patterns were observed at high metabolic demands.

Conclusions:

  • The effect of exercise intensity on breathing-cycling coordination differs between men and women.
  • Breathing rhythm regularity was a key factor in coordination, not cycling frequency, fitness, or experience.