Biomaterial Database

Effects of oxygen breathing on inspiratory muscle fatigue during resistive load in cycling men. 2009

M O Segizbaeva, and N P Aleksandrova

Laboratory of Respiration Physiology, Pavlov Institute of Physiology, Russian Academy of Science, Saint-Petersburg, Russia. marina@infran.ru

The aim of the present study was to determine the development of the inspiratory muscle fatigue in healthy human during incremental cycling to exhaustion under mild and heavy resistive loaded breathing in air and oxygen. Minute ventilation, tidal volume, respiratory rate, inspiratory mouth pressure, and parasternal EMG activities were recorded during an incremental cycling test under mild (12 cmH(2)O x l(-1) x s(-1)) and heavy (40 cmH(2)O x l(-1) x s(-1)) resistive loading in air and oxygen in 8 men. The degree of inspiratory muscle fatigue was evaluated by analysis of the dynamics of inspiratory mouth pressure, 'tension-time' index, and the fall of the high-to-low (H/L) ratio of the parasternal EMG. It was found that oxygen breathing slowed the development of inspiratory muscles fatigue evoked by incremental cycling only during mild resistive loading, whereas hyperoxia had not influence on inspiratory muscle endurance during heavy resistive loading.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D010101	Oxygen Consumption	The rate at which oxygen is used by a tissue; microliters of oxygen STPD used per milligram of tissue per hour; the rate at which oxygen enters the blood from alveolar gas, equal in the steady state to the consumption of oxygen by tissue metabolism throughout the body. (Stedman, 25th ed, p346)	Consumption, Oxygen,Consumptions, Oxygen,Oxygen Consumptions
D010102	Oxygen Inhalation Therapy	Inhalation of oxygen aimed at restoring toward normal any pathophysiologic alterations of gas exchange in the cardiopulmonary system, as by the use of a respirator, nasal catheter, tent, chamber, or mask. (From Dorland, 27th ed & Stedman, 25th ed)	Inhalation Therapy, Oxygen,Therapy, Oxygen Inhalation,Inhalation Therapies, Oxygen,Oxygen Inhalation Therapies,Therapies, Oxygen Inhalation
D012119	Respiration	The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (	Breathing
D005080	Exercise Test	Controlled physical activity which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used.	Arm Ergometry Test,Bicycle Ergometry Test,Cardiopulmonary Exercise Testing,Exercise Testing,Step Test,Stress Test,Treadmill Test,Cardiopulmonary Exercise Test,EuroFit Tests,Eurofit Test Battery,European Fitness Testing Battery,Fitness Testing,Physical Fitness Testing,Arm Ergometry Tests,Bicycle Ergometry Tests,Cardiopulmonary Exercise Tests,Ergometry Test, Arm,Ergometry Test, Bicycle,Ergometry Tests, Arm,Ergometry Tests, Bicycle,EuroFit Test,Eurofit Test Batteries,Exercise Test, Cardiopulmonary,Exercise Testing, Cardiopulmonary,Exercise Tests,Exercise Tests, Cardiopulmonary,Fitness Testing, Physical,Fitness Testings,Step Tests,Stress Tests,Test Battery, Eurofit,Test, Arm Ergometry,Test, Bicycle Ergometry,Test, Cardiopulmonary Exercise,Test, EuroFit,Test, Exercise,Test, Step,Test, Stress,Test, Treadmill,Testing, Cardiopulmonary Exercise,Testing, Exercise,Testing, Fitness,Testing, Physical Fitness,Tests, Arm Ergometry,Tests, Bicycle Ergometry,Tests, Cardiopulmonary Exercise,Tests, EuroFit,Tests, Exercise,Tests, Step,Tests, Stress,Tests, Treadmill,Treadmill Tests
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000403	Airway Resistance	Physiologically, the opposition to flow of air caused by the forces of friction. As a part of pulmonary function testing, it is the ratio of driving pressure to the rate of air flow.	Airway Resistances,Resistance, Airway,Resistances, Airway
D001239	Inhalation	The act of BREATHING in.	Inhaling,Inspiration, Respiratory,Respiratory Inspiration
D015656	Respiratory Mechanics	The physical or mechanical action of the LUNGS; DIAPHRAGM; RIBS; and CHEST WALL during respiration. It includes airflow, lung volume, neural and reflex controls, mechanoreceptors, breathing patterns, etc.	Breathing Mechanics,Breathing Mechanic,Mechanic, Breathing,Mechanic, Respiratory,Mechanics, Breathing,Mechanics, Respiratory,Respiratory Mechanic
D055815	Young Adult	A person between 19 and 24 years of age.	Adult, Young,Adults, Young,Young Adults