Figure 7From: Virtual respiratory system in investigation of CPAP influence on optimal breathing frequency in obstructive lungs diseaseDependence of the minute ventilation on the CPAP value for several breathing frequencies when Raw = 8norm. (the force developed by the respiratory muscles during particular inspirations is the same for all the frequencies). Note that the ventilation cannot be increased by means of the frequency rise if the respiration is not supported with CPAP.Back to article page