title: [Transitional modes in the work of the external respiratory system under physical loading].
abstract: When recording the respiratory volume (RV) in the course of a 5-minute muscular work, two types of transitory processes were revealed: an aperiodic and an oscillatory ones. The former characterises the matrix optimal way of adaptation to physical work. The latter occurs of loads in a moderate intensity. The RV fluctuations seem to reflect a "search" for the RV optimal level for a given lung ventilation. The reserve volume of expiration practically does not participate in the RV increase, thus maintaining a large enough functional residual capacity in physical load.
authors.forename: V L
authors.initials: VL
authors.lastname: Karpman
authors.forename: D
authors.initials: D
authors.lastname: Barbosa Merabel
mesh_terms: D000293:Adolescent; D000328:Adult; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D006801:Humans; D008176:Lung Volume Measurements; D012016:Reference Values; D012143:Respiratory Physiological Phenomena; D013177:Sports; D013997:Time Factors; D014797:Vital Capacity / Q000502:physiology; D014939:Work of Breathing / Q000502:physiology*
vernacular_title: Perekhodnye rezhimy raboty sistemy vneshnego dykhaniia pri fizicheskoĭ nagruzke.