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The history of apnea I
the first by a Greek fisherman 7
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action allow apneist aquaticity arms armstroke ascent athlete Autogenic Training blackout blade blood blood shift body position bottom breaststroke breathing buoyancy carbon cause cavity cells compensation completely constant weight contraction correct depth descent diaphragm dive divers duckdive dynamic apnea eardrum effect elastic energy Enzo Maiorca equipment Eustachian tube Execution exercise exhale expiration favours fibre finning finstroke flexion foot pocket force freediving hands head hydrodynamic immersion important increase inspiration Jacques Mayol legs liquid lower limbs lungs maintain Maiorca manoeuvre mask maximum Mayol mental meters middle ear monofin mouth move movement muscle muscular neoprene nose oxygen pass Pelizzari performed phase physical pool positive buoyancy possible pressure reach recovery reduced relaxation requires rescuer respiration respiratory rhythm rotation slow snorkel static apnea stress surface swimming technique tension thorax tion Umberto Pelizzari underwater variable weight velocity vertebral column victim volume waves weightbelt wetsuit whilst