Ventilation

• Inhale
  • Diaphragm contracts
  • Moves down
  • Rib cage expands
• Exhale
  • Diaphragm relaxes
  • Moves up
  • Rib cage contracts

Ventilation Formula

• $V_E$
  • Amount of air moved in 1m
• Volume of air in each breath | Tidal Volume
  • $V_T=.5L$ at rest
  • $V_T=3-4L$ during exercise
• Breaths per minute
  • Respiratory Frequency (f)
  • $f=12breaths/min$ at rest
  • $f=30breaths/min$ during exercise.
• $V_E(L/m)=V_T(L)\ast f(Breaths/min)$