Energy Continuum

Energy Continuum

1. Intensity + Duration

   • Anerobic exercise = high intensity/low duration = ATP/PC and lactic acid
   • Aerobic exercise = low intensity/high duration = aerobic

2. OBLA

   • During high intensity exercise lactate is produced above resting levels (lactate threshold)
   • When lactate level reaches 4 mmol/L = OBLA
   • OBLA of 4 mmol/L means it is being produced faster than it is removed
   • OBLA increases and causes:
     • Blood pH lowers
     • Inhibition of enzyme action
     • Stimulation of pain receptors
     • Muscle fatigue/pain

3. Thresholds

   • Less than 10 seconds = ATP/PC = 100m sprint
   • 10-90 seconds = ATP/PC + LA = 200-400m sprint
   • 90-180 seconds = LA + aerobic = 800m
   • 3+ minutes = aerobic = marathon

4. Oxygen Avaliable

   • Avaliable O2 = aerobic system
   • Less O2 = lactic acic
   • Amount of O2 = if fuels can be broken down

5. Enzyme Activity

   • Enzymes = catalysts for breakdown of energy source
   • Without them there would be no reaction