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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 ...
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.
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 density of the breathing gas is higher at depth, so the effort required to inhale and exhale (work of breathing) increases, making breathing more difficult and less efficient. [1] The higher gas density also causes gas mixing within the lung to be less efficient, effectively increasing the physiological dead space. [ 41 ]
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]
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]
A water aerobics class at an Aquatic Centre. Water aerobics (waterobics, aquarobics, aquatic fitness, aquafitness, aquafit) is the performance of aerobic exercise in water such as in a swimming pool. It is done mostly vertically and without swimming typically in waist deep or deeper water. Water aerobics is a form of aerobic exercise that ...