P.E Chapter 3 Acute Responses Respiratory System

• Increased respiratory frequency
• Increased tidal volume
• Increased ventilation
• Increased o2 uptake - VO2

• Intended to supply more oxygen to muscles through the blood stream
• Triggered by a build up of CO2 in the blood

Depth of breathing increases to increase level of o2 in the lungs

Directly related increases in tidal volume and respiratory rate.

V= TV x RR

O2 transported, taken up by and used by the body for energy production

• Body size
• Gender
• Age
• Training status
• Genetics

• At the start of exercise there is a discrepency between amount of o2 needed and the amount provided
• Causes the changes in respiratory system

When the demand of o2 equals the amount of o2 being suplied by the body

Excess post-exercise oxygen consumption

After the event when more oxygen than normal has to be consumed to pay of o2 debt from o2 deficit at the start of event