Space physiology lecture (BB)

Space physiology lecture (BB) - Micro-gravity Physiology in...

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Click to edit Master subtitle style 5/29/11 MOV 365 – Clinical Exercise Physiology Micro-gravity: Physiology in Space
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5/29/11 Space...(learning objectives) Considerations for space travel Responses to space flight Countermeasures Post-flight recovery
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5/29/11 Background On Earth, object exerts force downwards Gravity (1 G) Newton’s 3rd Law F = mg (where g = 9.81 m s -2 ) Moon gravity = 1.6 m∙s-2 ↑ distance from Earth, ↓ gravitational pull
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5/29/11 Movie Blood is being pulled also when G’s exerted on body. Muscle pump (keeping everything tight) and breathing to help work against that. G lock is when you black out. Centerfuge training – youtube G force black out – youtube
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5/29/11 Effects of micro-gravity Blood/fluid shift upwards From ‘extra’ to ‘intra’; into thoracocephalic region - Carotid and aortic arch would detect these changes Causes: Puffy face 2-5 cm ↓ in waist girth Nasal congestion, headaches, nausea
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5/29/11 Changes w/ spaceflight
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