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Teaser for September CEU presentation to TWU fitness staff.

Teaser for September CEU presentation to TWU fitness staff.

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    Sample Sample Presentation Transcript

    • Cardiovascular Physiology
    • Overview
      Anatomy and Background Information
      Controlling Respiration
      Heart Rate and Cardiac Output
      Effects of Disease
      Aerobic Exercise
    • Gas Exchange and Transport
      Partial Pressure
      Transporting Oxygen in Blood
      Transporting Carbon Dioxide in Blood
    • Partial Pressure
      Body’s supply of oxygen depends upon the concentration and pressure of oxygen in ambient air.
      Concentration in ambient air:
      Oxygen 20.93%
      Nitrogen 79.04%
      Carbon Dioxide 0.03%
      At sea level, the pressure of the above is sufficient to raise a column of mercury to a height of 760 mm
    • Cardiac Output - Exercise
      Cardiac output increases in proportion to exercise intensity.
      This is due to an increase in heart rate and stroke volume.
      Trained have greater exercise cardiac output due to greater stroke volumes.
    • Cardiac Output - Trained vs. Untrained
      At Rest:
      Max. Exercise:
      Adapted from McArdle, Katch, and Katch
    • Myocardial Infarction
      Inadequate blood reaching heart muscle, causing necrosis of heart muscle
      Does not go away with rest
      Onset usually preceded by severe fatigue for several days
      Occlusion of 4-6 hours will result in irreversible damage
    • What a Coronary Artery Occlusion looks like
      Arrows indicate occlusions. From http://www.rjmatthewsmd.com/Definitions/myocardial_infarction.htm
    • Aerobic Exercise
    • Factors That Influence Performance
      Maximal oxygen consumption
      Lactate threshold
      Fuel utilization
      Muscle fiber characteristics
      Exercise economy
    • Interval Training
      Allows for a greater volume of exhaustive work to be performed.
      Benefits:
      Teaches race pace
      Can improve anaerobic metabolism
      Can improve maximal oxygen consumption
      Increases speed
    • Interval Training Variables
      Intensity of the exercise
      Duration of the exercise interval
      Length of recovery
      Number of repetitions