Human Performance 22

Human Performance 22 - HumanPerformance22 15:58

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Human Performance 22 15:58 Use of HR To Estimate Exercise Intensity:  using VO2 (true max) to determine  the best intensity: 70%, “simple HR”: ~61%-65% lower than true max: Karvonen  HR equation: pushes up closer, closer to the true max: ~64%-67%.   Karbonen Equation:  THR=(((max HR(220age)-RHR) X int%)+RHR), Given that  30yrs, RHR=70b/min, Int.=60%.  Simple=190x.60=114 Karvonen: 190-70=120.  120x.60+70, 72+70=142 Relationship between Q + a-v O2 diff. : when one does Anaerobic exercise: 1)  blood drawn to tissues, 2)ability to extract oxygen at the tissue level.  For  example:  Q vs. A-VO2 diff.:  during aerobic activity and you happen to be   anemic or high altitude (anything that reduces oxygen concentration) in   order to continue to exercise, how does the body adjust to lack of oxygen   in arterial blood?  The person needs higher cardiac output, BRING MORE  BLOOD.  If a person has problems with cardiac problems to pump blood,   how do they adjust?  If one has poor circulation then one has to extract more  blood/oxygen up to what’s available. If the cardiac person is anemic? There is no  solution: there is a major handicap and the person can not do much exercise.  If  a-Vo2diff is low then Q increases. If Q is low then a-Vo2diff is high.
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Blood Pressure : Pressure=Flow(cardiac output) X Resistance(diameter of blood  vessels (arteries main ones and then veins) controlled locally or hormonally and 
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This note was uploaded on 10/28/2010 for the course EXSC 205Lxg taught by Professor Girandola during the Spring '07 term at USC.

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Human Performance 22 - HumanPerformance22 15:58

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