aerobic and anaerobic

• aerobic exercise

  • takes place in the presence of oxygen
  • exercise is steady and over a longer period of time so the cardiorespiratory system is able to supply all the oxygen to the working muscles
  • eg, long distance running, endurance cycling
• aerobic exercise

  glucose + oxygen → energy + carbon dioxide + water
• anaerobic exercise

  glucose → energy + lactic acid
• anaerobic exercise

  • takes place in the absence of oxygen
  • involves very high intensity exercise over a short period of time
  • glucose isnt fully broken down so it forms lactic acid which causes fatigue, discomfort and may force exercise to stop
  • eg, 100m sprint, triple jump
• people who work anaerobically can only work for a short period of time
• lactic acid

  a waste product of anaerobic respiration