acute responses to exercise

Respiratory
1. Ventilation
  1. Lungs
    1. Tidal Volume (TV)
    2. Respiratory Rate (RR)
  2. V = TV x RR
2. Diffusion
  1. oxygen IN
    1. Lungs IN -alveoli
      1. red blood cells - haemoglobin
        Muscle Tissue
        carbon dioxide OUT
        Lungs OUT- alveoli
        O2 attaches to myoglobin
        transported to mitochondria
        Transformed into ATP
Cardiovascular
1. Venous return
  1. because blood leaves heart quick we need to have blood return just as fast
  2. 3 pumping mechanisms
    1. muscle pump
    2. respiratory pump
    3. vasoconstriction
2. blood pressure
  1. S/D
  2. Systolic blood pressure
    1. arteries contract
  3. diastolic blood pressure
    1. Arteries relax
3. Redistribution of blood flow
  1. Rest
    1. Muscle 20%
  2. Maximal intensity Exercise
    1. muscle 84%
  3. vasodilation
  4. vasoconstriction
4. cardio output (Q)
  1. amount of blood pumped out of heart in 1 min
  2. Litres/minute
  3. Q = SV x HR
  4. stroke volume (SV)
  5. heart rate (HR)
  6. controls where blood goes
5. A-VO2 difference
  1. difference of Oxygen concentration between arterioles and venules
6. Blood volume
7. oxygen consumption
muscular
1. motor unit trecruitment
  1. motor neuron and the muscle fibres it stimulates
2. Energy substrate
  1. ATP-PC energy system
    1. Creatine Phosphate
  2. anaerobic glycolysis energy system
    1. CHO- glucose
    2. fats
  3. aerobic energy system
    1. fats
3. temperature
  1. stimulates sweat glands
  2. heat is by product of ATP resynthesis
4. lactate, H+

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acute responses to exercise

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	Created by ericabramble almost 11 years ago