exercise

• Exercise


  Requires increased muscular contraction, which requires more energy from respiration
• Increased oxygen demand from exercise

  1. Increased breathing rate

  2. Increased breath volume

  3. Increased heart rate
• Increased muscular contraction from exercise

  Requires more energy
• Increased energy demand from exercise

  Requires increased aerobic respiration
• Insufficient oxygen supply during intense exercise

  Leads to anaerobic respiration
• Anaerobic respiration


  Less efficient than aerobic respiration, produces lactic acid
• Increased lactic acid from anaerobic respiration

  Causes a burning sensation in muscles
• Removing lactic acid after exercise

  1. Lactic acid transported to liver

  2. Reacted with oxygen

  3. Converted back to glucose
• Oxygen debt


  Extra oxygen needed to remove lactic acid after exercise
• Measuring effects of exercise

  • Measure breathing rate
  • Measure heart rate
• Breathing rate measured by counting chest rises and falls per minute
• Heart rate measured by feeling pulse on wrist or neck