Respiratory energetics during exercise at high altitude.

@article{Cibella1999RespiratoryED,
  title={Respiratory energetics during exercise at high altitude.},
  author={Fabio Cibella and Giuseppina Cuttitta and Severino Romano and Bruno Grassi and Giovanni Bonsignore and Joseph Milic-Emili},
  journal={Journal of applied physiology},
  year={1999},
  volume={86 6},
  pages={1785-92}
}
The purpose of this study was to assess the effect of high altitude (HA) on work of breathing and external work capacity. On the basis of simultaneous records of esophageal pressure and lung volume, the mechanical power of breathing (Wrs) was measured in four normal subjects during exercise at sea level (SL) and after a 1-mo sojourn at 5,050 m. Maximal exercise ventilation (VEmax) and maximal Wrs were higher at HA than at SL (mean 185 vs. 101 l/min and 129 vs. 40 cal/min, respectively), whereas… CONTINUE READING
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