Many different factors affect the density of air ... the physiological limits of someone trying to climb without oxygen. Only one direct measurement of atmospheric pressure has ever been made ...

The maximal oxygen uptake fell from 3.3 in the control study to 2. ... Stroke volume and cardiac output were reduced also during supine exercise. A direct effect on myocardial function, therefore, ...

Medical conditions that deprive the testes of oxygen, such as sleep apnoea, may be contributing to the decline in male fertility observed over the past 50 years.

Objective To synthesise the evidence from randomised controlled trials (RCTs) that investigated the effects of supplemental oxygen therapy compared with room air in patients with suspected or ...