excs_205_FINAL_REVIEW

excs_205_FINAL_REVIEW - 8:05:00 AM Cardiovascular VO2...

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25/06/2007 10:05:00 Cardiovascular VO2 Environmental Cardiovascular Heart rate stroke value and  Cardiac output at rest 5 l/min HR- much lower in endurance trained, stroke higher 15-17 L/min for sedentary 25-40 for endurance trained HR-SV-Q Q=HR times SV HR—linear Stroke rate---curvilinear First calculation: use of HR to indicate relative intensity.  Predicted max, HR -  220-age Two ways to look at HR to indicate relative intensity Simple-  Max HR times percentage (intensity) Karvonen equation  brings closer to real intensity
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THR= max HR – resting HR times intensity + RHR Blood Pressure P= F * R Flow is affected by cardiac output R is affected by viscosity and blood vessel diameter o Syst 90*150 o Diast 40-85, closed more pressure o Syst goes up linearly with work but during resistance systolic could  increase to above 300 because diameter of blood vessels is  decreasing. Postural affect, Blood pressure is lowest on back, highest upright Blood Distribution A-V shunts o Don’t need to memorize table, actual amounts o At rest,  most blood goes to abdominal, kidney, and skeletal muscles Kidneys get 20-22 percent of blood, greatest relative amount of  blood During max, exercise, goes to skeletal muscles non-volitile  muscles, capillary blood flow is slow.  Oxygen consumption Submax constant excerise goes up and reaches a plateau, steady state If multiple steady state times minutes of exercise reaching a triangle Take oxygen requirement subtract oxygen consumption
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Oxygen recovery or oxygen debt. Research has shown that magnitude is  equivalent to deficit. Need to reduce magnitude of deficit. No diff. in steady  state between athletes/non-athletes Approach to steady state is faster in trained, will incur lower deficit, and lower 
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excs_205_FINAL_REVIEW - 8:05:00 AM Cardiovascular VO2...

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