Peculiarities of reactions of thoracic and abdominal components of respiratory system on additional resistance

9 men were tested with a use of computer mask-less pneumograph on reactions of thoracic and abdominal components of respiratory system on inspiratory, expiratory and inspiratory-expiratory resistance. It was revealed that adaptation of respiratory system to additional resistance based on thoracic component which has as effectors intercostal muscles with well-developed proprioceptive apparatus. Abdominal component with diaphragm and expiratory muscles of prelum abdominale with unthrifty proprioceptive apparatus as effectors are less capable to adequate compensatory reaction on additional respiratory loading. Possible mechanisms are discussed.