Ventilatory response to exercise in subjects breathing CO2 or HeO2.

  title={Ventilatory response to exercise in subjects breathing CO2 or HeO2.},
  author={Tony G. Babb},
  journal={Journal of applied physiology},
  volume={82 3},
To investigate the effects of mechanical ventilatory limitation on the ventilatory response to exercise, eight older subjects with normal lung function were studied. Each subject performed graded cycle ergometry to exhaustion once while breathing room air; once while breathing 3% CO2-21% O2-balance N2; and once while breathing HeO2 (79% He and 21% O2). Minute ventilation (VE) and respiratory mechanics were measured continuously during each 1-min increment in work rate (10 or 20 W). Data were… CONTINUE READING

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