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Ai Chi is a form of aquatic exercise used for recreation, relaxation, fitness, and physical rehabilitation. Clinical Ai Chi is distinguished as a specialized, active form of aquatic therapy . In essence, Ai Chi uses breathing techniques and progressive resistance training in water to relax and strengthen the body, based on elements of qigong ...
Aquatic arthropods generally possess some form of gills in which gas exchange takes place by diffusing through the exoskeleton. Others may breathe atmospheric air while remaining submerged, via breathing tubes or trapped air bubbles, though some aquatic insects may remain submerged indefinitely and respire using a plastron. A number of insects ...
A diver performing static apnea face down in a pool, with the support of a partner (left) Static apnea (STA) is a discipline in which a person holds their breath underwater for as long as possible, and need not swim any distance. [1]
Aquatic therapy is beneficial for people with spinal cord injury or disorder. Aquatic therapy promotes physical and psychosocial benefits for patients with spinal cord injury and disorders. In a study, underwater treadmill training improved lower extremity strength, balance and gait in people who suffer from partial damage to their spinal cord.
Recreational scuba diver The undersea kelp forest of Ana Capa off of the coast of Oxnard, California Diver looking at a shipwreck in the Caribbean Sea. Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. [1]
The Aqua-Lung was not the first self contained underwater breathing apparatus, but it was the first to be widely popular. In 1934, René Commeinhes developed a firefighter's breathing apparatus which was adapted for diving as the G.C. - 42, and patented in April, 1942 (no.976,590) by his son Georges in 1937. It was used by the French Navy ...
The original breathing gas for diving was atmospheric air, and compressed air remains an important breathing gas for ambient pressure diving. Oxygen is limited to shallow water to avoid toxicity problems, and is usually used to accelerate decompression, or by tactical divers to provide a long endurance with a small amount of gas, and to ...
Unlike the more common gill-bearing aquatic animals, these air-breathing animals have lungs (which are homologous to the swim bladders in bony fish) and need to surface periodically to change breaths, but their ranges are not restricted by oxygen saturation in water, although salinity changes can still affect their physiology to an extent.