Short term effects of exercise (Respiratory)

Short term effects of exercise (Respiratory)

1. Minute Volume = Amount of breath in one minute

   • Expired MV = Amount of air breathed out in one minute
   • Inspired MV = Amount of air breathed in, in one minute
   • MV goes up when exercising
   • Respiratory rate goes up when exercising
   • TV = Volume of air in one breath x RR
     • Rest: RR = 12 breaths per min, Volume = 0.5l per breath
     • Moderate: RR = 30 breaths per min, Volume = 2.5l per breath
     • Maximal: RR = 48 breaths per min, Volume = 4l per breath

2. Diffusion

   • Diffusion is when molecules move from high concentration to low concentration
   • Gaseous exchange - occurs at the alveoli. Thin walls mean easy diffusion. Oxygen will leave the alveoli and enter the capillaries
   • Diffusion occurs at the muscles. Capillaries touch the muscles and oxygen will move across into the muscle