Transcript Training and the Pulmonary System

Training and the
Pulmonary System
Francisco Garcia, Alessia Marsiglio
The pulmonary system
 The pulmonary system consists of the lungs, associated
muscles, and the airways leading to and from the lungs.
 The lungs get enough oxygen into the body and to get rid
of carbon dioxide that is a waste product of the body (in
other words inhalation and exhalation)
 http://www.youtube.com/watch?v=nzfmSNcN4gs
Basic Definitions
Total Lung Capacity:
Volume of air in the lungs after a maximum inhalation.
Vital Capacity:
Maximum volume of air that can be exhaled after a maximum
inhalation.
Tidal Volume:
Volume of air taken in or out with each inhalation or exhalation.
Ventilation Rate:
Number of inhalations or exhalations per minute.
Explain the need for increases in tidal
volume and ventilation rate during exercise.
 During exercise, the body's production of carbon dioxide goes
up. Increasing tidal volume is one way for your lungs to
accommodate the exhalation of this increased carbon dioxide
load.
 Increases in ventilation rate and tidal volume bring more
ventilation to the lungs per minute during exercise when more
oxygen is necessary.
 This ensures that the concentration of oxygen in the alveoli
remains high and the concentration of carbon dioxide remains
low.
 This allows the body to continue its aerobic respiration
providing energy to the body to continue exercise.
Tidal Volume and Ventilation
http://www.youtube.com/watch?v=eph173yxEQ&feature=related
Effects of exercise on ventilation
During exercise increases in ventilation rate and tidal volume
occur.
 Bring more fresh air to the lungs per minute
 Ensure concentration of oxygen in the air in the alveoli remains
high and carbon dioxide low
 Concentration gradients of oxygen and carbon dioxide between
alveolar blood and air are therefore steep, maintaining a high
rate of gas exchange (carbon dioxide diffusing into alevoli and
oxygen absorbed into the blood per minute)
 During exercise more oxygen is used and more carbon dioxide
produced per minute
Effects of Training on the
Pulmonary System
Before analyzing the effects of training on the pulmonary system,
it is important to understand the meaning of training in this
situation.
Training involves repeating exercises that bring the body into the
desired state of fitness.
 Can reduce the ventilation rate at rest from 14 to 12
inhalations per minute.
 Can increase the maximum ventilation rate from 40 to 45
inhalation per minute.