title: [State of the human motor apparatus during prolonged exposure to a nitrogen-oxygen atmosphere at a pressure of 5 atm].
abstract: The state of the motor function of individuals who were pedalling a bicycle ergometer in an altitude chamber containing a nitrogen-oxygen atmosphere at 5.0 ata was studied. Maximum isometric force, precision of controlling movement and muscular tension, accuracy and velocity of movements were recorded. The maximum force, precision and velocity of movements varied phasically. The greatest changes were found on the 1st-3rd and 6--7th days of the exposure. These parameters returned to the normal when the atmosphere pressure was reduced to 1.0 ata. During exercises at an elevated pressure the muscular force, accuracy and velocity of movements decreased. During exercises at a normal pressure similar changes were less distinct and consistent.
mesh_terms: D001274:Atmospheric Pressure; D006801:Humans; D009132:Muscles / Q000502:physiology*; D009584:Nitrogen; D010100:Oxygen; D005082:Physical Exertion; D013997:Time Factors
chemical_list: D009584:Nitrogen; D010100:Oxygen
vernacular_title: O sostoianii dvigatel'nogo apparata cheloveka v period mnogosutochnogo prebyvaniia v azotno-kislorodnoĭ srede pri davlenii do 5 ata