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  2. Lung volumes - Wikipedia

    en.wikipedia.org/wiki/Lung_volumes

    The average total lung capacity of an adult human male is about 6 litres of air. [1] Tidal breathing is normal, resting breathing; the tidal volume is the volume of air that is inhaled or exhaled in only a single such breath. The average human respiratory rate is 30–60 breaths per minute at birth, [2] decreasing to 12–20 breaths per minute ...

  3. Centimetre or millimetre of water - Wikipedia

    en.wikipedia.org/wiki/Centimetre_or_millimetre...

    A centimetre of water [1] is a unit of pressure. It may be defined as the pressure exerted by a column of water of 1 cm in height at 4 °C (temperature of maximum density) at the standard acceleration of gravity, so that 1 cmH 2 O (4°C) = 999.9720 kg/m 3 × 9.80665 m/s 2 × 1 cm = 98.063754138 Pa ≈ 98.0638 Pa, but conventionally a nominal maximum water density of 1000 kg/m 3 is used, giving ...

  4. Maximum operating depth - Wikipedia

    en.wikipedia.org/wiki/Maximum_operating_depth

    (for example, 50% nitrox can be breathed at twice the pressure of 100% oxygen, so divide by 0.5, etc.). Of this total pressure which can be tolerated by the diver, 1 atmosphere is due to surface pressure of the Earth's air, and the rest is due to the depth in water. So the 1 atmosphere or bar contributed by the air is subtracted to give the ...

  5. Metre sea water - Wikipedia

    en.wikipedia.org/wiki/Metre_sea_water

    The pressure of seawater at a depth of 33 feet equals one atmosphere. The absolute pressure at 33 feet depth in sea water is the sum of atmospheric and hydrostatic pressure for that depth, and is 66 fsw, or two atmospheres absolute. For every additional 33 feet of depth, another atmosphere of pressure accumulates. [6]

  6. Hyperbaric treatment schedules - Wikipedia

    en.wikipedia.org/wiki/Hyperbaric_treatment_schedules

    Continuous decompression to 1.9 bar over 15 minutes; 60 minutes at 1.9 bar (30 fsw) Continuous decompression to surface over 15 minutes; Neurological decompression sickness, arterial gas embolism or unresolved symptoms after 10 minutes at treatment pressure: [18] 30 minutes at 2.8 bar (60 fsw) Continuous decompression to 1.9 bar over 30 minutes

  7. Are You 60+? These Are Your Most Common Health Risks - AOL

    www.aol.com/most-common-health-issues-people...

    People over 60 face health concerns dramatically different than when they were younger. These important health issues need to be on all seniors' radar.

  8. Submarine depth ratings - Wikipedia

    en.wikipedia.org/wiki/Submarine_depth_ratings

    This is the maximum depth at which a submarine is permitted to operate under normal peacetime circumstances, and is tested during sea trials.The test depth is set at two-thirds (0.66) of the design depth for United States Navy submarines, while the Royal Navy sets test depth at 4/7 (0.57) the design depth, and the German Navy sets it at exactly one-half (0.50) of design depth.

  9. 'I'm 65 and In the Best Shape of My Life—This Is the Exact ...

    www.aol.com/im-65-best-shape-life-112500521.html

    She also has climbed to the top of the Rock of Guatape in Colombia, been named one of the Fittest 50 Over 50 in the nation and has won medals through the National Senior Games.

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