Peculiarities of lung ventilation and gas exchange in smoking and non-smoking men

Parameters of lung ventilation and gas exchange in a group of smoking young men have been recorded before and after smoking with an aid of spiroanalyzer MasterScreen Capno. Both the decreased intensity of voluntary hyperventilation and shortened time of voluntary breath-holding can manifest the decreased degree of voluntary respiration control, whereas the less intensity of hyperventilation marks the decrease in efficiency of the respiration motor apparatus.