diving

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diving

the act of work or recreation in an underwater environment. The main health effects are related to the increased pressure to which the person is subjected as the ambient pressure generally increases by 1 atm (14.7 pounds per square inch) for each 33 feet of descent below the water surface. Conditions that warrant caution about diving include obesity, diabetes, alcoholism, epilepsy, drug abuse, and respiratory disorders, including allergic rhinitis. See also decompression sickness, diving reflex.

diving

the act of submerging underwater; diving by fish and amphibians creates an obvious need for mechanisms that allow them to be submerged under water for long periods. Most mammalian and avian orders also have aquatic species that have a similar need. Diving reflexes operate as soon as nostrils are submerged and include oxygen conservation, respiratory arrest, intense peripheral vasoconstriction, bradycardia and compression of the chest with almost complete evacuation of the lungs.
References in periodicals archive ?
He also pointed to the Welsh Government's previous PS100,000 2012 collaboration with energy drink firm Red Bull in its sponsorship of a cliff-diving event in Pembrokeshire, and with fizzy drink firm Coca-Cola for an Olympic flame tie-up.
The University of Oregon athletics community lost one of its most well-liked and widely respected members Saturday afternoon when tennis player Alex Rovello drowned in a cliff-diving accident.
DAREDEVILS took the plunge in a terrifying 28-metre jump at legendary cliff-diving spot Serpent's Lair at the weekend.