Dynamics of ventilation, circulation, and gas exchange to incremental and decremental ramp exercise.

@article{Miyamoto1992DynamicsOV,
  title={Dynamics of ventilation, circulation, and gas exchange to incremental and decremental ramp exercise.},
  author={Yoshimi Miyamoto and Y Niizeki},
  journal={Journal of applied physiology},
  year={1992},
  volume={72 6},
  pages={2244-54}
}
Transient responses of minute volume (VE), O2 uptake (VO2), CO2 output (VCO2), heart rate (HR), and cardiac output (Q) to a step change and ramp changes with slopes ranging from 33.3 to 14.3 W/min were studied in five healthy human subjects over the load range from 25 to 125 W. The ramp responses were fitted to a first-order model with a pure time delay (td) and a time constant (TC), while most of the step responses fitted better to a second-order model, consisting of a fast and a slow… CONTINUE READING