Unit 3/4 Outcome 2

Unit 3/4 Outcome 2

1. recovery rates

   • fatigue/limiting factors
     • fuel depletion
       • blood glucose
       • muscle glycogen
       • PC
       • intramuscular ATP
       • fatigue
         • ATP-PC = fule depletion Anaerobic glyc. hydrogen ion build up in the muscles Aerobi glyc. fuel depetion 2+ hours, dehydration
     • neuromuscular factors
       • impaired Na+ and K+ gradients
       • deceased CNS firing
     • elevated body temperature
       • dehydration
       • redistribution of blood away from muscles
     • metabolic by-products
       • H+ ions in plasma and muscle
       • inorganic phosphate (Pi)
       • Ca2+ ions
       • ADP
       • lactic acid and lactate
         • good or bad?
   • how long until next event/training
   • active recovery
     • oxidation of metabolic by-products
   • passive recovery
     • PC restoration
   • fule restoration, high GI vs low GI sports drinks/gels
     • 70% PC restored in 30 sec 90% PC restored in 90 sec 100% PC restored in 3mins
       • High GI post activity combination of potein & carbs
       • Low GI immediately before/during
     • sports drinks/gels
       • increased intake of carbohydrates, potassium and electrolytes, muscles more responsive to insulin- sports drinks replenish lost glycogen

2. energy systems and fules

   • energy for movement
     • ATP-PC system
       • PC = C + Pi + energy
       • ATP = ADP + Pi + energy
     • anaerobic glycolysis system
       • glycogen from carbs
     • aerobic glycolysis system
       • glycogen from carbohydrates
       • FFA's from fats
       • amino acids from protein

3. accute responses to exercise

   • muscular
     • lactate
     • energy substrates
       • exercise results in a decrease in stored ATP, phosphocreatine, glycogen (muscles) & triglycerides
     • motor unit recruitment
     • temperature
   • respiratory
     • respiratory rate
       • number of breaths taken in one minute
     • tidal volume
       • amount breathed in or out in one breath
     • ventilation (V)
       • amount breathed in or out in one minute increases
     • diffusion
       • increased diffusion allows greater amounts of oxygen to the working muscles
   • cardiovascular
     • stoke volume (SV)
       • increases to a maximum during sub-maximal execise
     • A-VO2 diference
     • cardiac output (Q)
       • further increases in cardiac output are due to increased HR
     • venous return
     • blood pressure
     • heart rate (HR)
       • heart rate increases lineraly until maximum HR is reached