A recent study explored one possible cause -- hyperoxia or high concentrations of oxygen given to such patients during surgery -- as opposed to doses more similar to air. The study concluded that ...

The oxygen desaturation index (ODI) measures how often and how much your blood oxygen level drops while you sleep. A normal ODI is fewer than five desaturation episodes per hour of sleep, and anything ...

Hyperthyroidism is a condition in which your thyroid gland is overactive, producing more hormones than your body needs. Both high and low thyroid hormone levels can cause exercise intolerance. Your ...

A new study suggests that face masks have a negligible negative effect on the levels of carbon dioxide and oxygen that a person breathes. All data and statistics are based on publicly available data ...

Submaximal exercise testing encompasses a range of protocols in which individuals perform physical activity at intensities below their maximal capacity. These tests are designed to estimate ...