Diving Physiology (BB)

Diving Physiology (BB) - Diving Physiology Click to edit...

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Click to edit Master subtitle style 5/29/11 Diving Physiology MOV 365 – Clinical Exercise Physiology
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5/29/11 Highlights 1500Da Vinci designs snorkel and fins 1667First observation of ‘the bends’ 1943Scuba apparatus developed 1960 Descent to bottom of Marianas Trench 38,520 ft or 10,916 m or 6.8 miles 2003 Ballast free-dive record 400 ft or 122 m (3 min 38 s) 2004 No limits free-dive record
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5/29/11 Physiological considerations Water is non-compressible due to high density Water exerts greater pressure than air Hydrostatic pressure Diving creates hyperbaria Increased External pressure on the body
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5/29/11 Increasing hyperbaria At water surface, pressure is 1 atm For every 10 meters (33ft) descent pressure INCREASES 1 atm At 50 m depth, pressure is 6 atm Boyle’s Law…? Every 10 m descent, lung volume halves
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5/29/11 Concerns Major constituent of body = water Therefore no effect with diving However, many air-filled cavity spaces… e.g. Lungs, respiratory, sinuses, middle ear Susceptible to hyperbaria Need to equalize changes with diving As cavities increase in pressure we
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This note was uploaded on 05/29/2011 for the course MOV 365 taught by Professor Rosssherman during the Spring '11 term at Grand Valley State.

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Diving Physiology (BB) - Diving Physiology Click to edit...

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