Fluids3pp - Fluids and Electrolytes Re-inventing wheels...

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Fluids and Electrolytes Re-inventing wheels Body Fluid Compartments • Intracellular –Potassium, proteins • Extracellular –Sodium, chloride –Blood •Oncotic and osmotic pressures •Proteins, volume dependent Electrolytes • Water is polar • Ions are polar – Ca, Mg, K, Na, Cl • Proteins are polar
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Training and exercise differences • Hormonal control and athlete sensitivity • Systole and diastole –Measure mean arterial pressure (MAP) • SV X HR X TPR = MAP ?? • MAP = [(2 x diastolic)+systolic] / 3 • Fun site http://www.globalrph.com/map.htm • Electrolyte concentrations/losses • Volume shifts with hyperthermia Acute physiological responses to heat stress/fluid loss • Initially increase peripheral circ to dissipate heat • Losing so much fluid and hypertonic blood • Blood pressure declining • Cardiac strain and decreased output • Eventually shunt blood back centrally
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Effects of dehydration on exercise • Practical measurement • Sweating (trained vs. untrained and acclimation) • Blood volume adaptations • Rates of sweat vs GI absorption
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Fluids3pp - Fluids and Electrolytes Re-inventing wheels...

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