A Four-Way Comparison of Cardiac Function with Normobaric Normoxia, Normobaric Hypoxia, Hypobaric Hypoxia and Genuine High Altitude
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چکیده
منابع مشابه
A Four-Way Comparison of Cardiac Function with Normobaric Normoxia, Normobaric Hypoxia, Hypobaric Hypoxia and Genuine High Altitude
BACKGROUND There has been considerable debate as to whether different modalities of simulated hypoxia induce similar cardiac responses. MATERIALS AND METHODS This was a prospective observational study of 14 healthy subjects aged 22-35 years. Echocardiography was performed at rest and at 15 and 120 minutes following two hours exercise under normobaric normoxia (NN) and under similar PiO2 follo...
متن کاملPoint: Hypobaric hypoxia induces different physiological responses from normobaric hypoxia.
Hypoxia is defined as any combination of reduced barometric pressure (PB) and/or a reduced inspired fraction of oxygen (FIO2), which ultimately results in an inspired partial pressure of oxygen (PIO2) less than 150 mmHg (6). Pathophysiological responses to hypoxia or adaptations to hypoxic training can be investigated in two different types of exposure: hypobaric hypoxia (HH; FIO2 20.9%; PB 760...
متن کاملEffect of Acute Exposure to Moderate Altitude on Muscle Power: Hypobaric Hypoxia vs. Normobaric Hypoxia
When ascending to a higher altitude, changes in air density and oxygen levels affect the way in which explosive actions are executed. This study was designed to compare the effects of acute exposure to real or simulated moderate hypoxia on the dynamics of the force-velocity relationship observed in bench press exercise. Twenty-eight combat sports athletes were assigned to two groups and assesse...
متن کاملDiscerning normobaric and hypobaric hypoxia: significance of exposure duration.
TO THE EDITOR: We read a recently published article (4) with great interest. The authors performed a rigorously controlled study scrutinizing the possible differences in cardiorespiratory responses, control of breathing, and acute mountain sickness (AMS) incidence during short-term (6 h) exposures to hypobaric (HH) and normobaric hypoxia (NH). We commend the authors for their smart experimental...
متن کاملPoint: Counterpoint: Hypobaric hypoxia induces/does not induce different responses from normobaric hypoxia POINT: HYPOBARIC HYPOXIA INDUCES DIFFERENT PHYSIOLOGICAL RESPONSES FROM NORMOBARIC HYPOXIA
Hypoxia is defined as any combination of reduced barometric pressure (PB) and/or a reduced inspired fraction of oxygen (FIO2), which ultimately results in an inspired partial pressure of oxygen (PIO2) less than 150 mmHg (6). Pathophysiological responses to hypoxia or adaptations to hypoxic training can be investigated in two different types of exposure: hypobaric hypoxia (HH; FIO2 20.9%; PB 760...
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ژورنال
عنوان ژورنال: PLOS ONE
سال: 2016
ISSN: 1932-6203
DOI: 10.1371/journal.pone.0152868