Respiratory System
• Immediate and short term effects of exercise
• Effects of regular participation on the respiratory
system
• The effects of smoking on the respiratory system
Respiratory system
In general:
• Air is drawn in through the mouth and in to the lungs.
• We breath in oxygen and breath out carbon dioxide in a process known
as gaseous exchange.
• http://www.youtube.com/watch?v=hc1
YtXc_84A (General)
• http://www.youtube.com/watch?v=ydX
8Lw4q2Mk&feature=related (Children)
Immediate effects of
exercise
Try it!
1. Quietly sit and put your head on the desk,
count how many times you breathe in and
out in 1 minute (in and out = 1 breath)
2. Now, do an aerobics session for 2 minute and
re-count your breaths
http://www.youtube.com/watch?v=8zuy7kZBRrQ http://www.youtube.com/watch?v=6g4BhtkiKiU&feature=related
3. Write down what differences you had
Immediate effects of exercise
• Increased breathing rate
• Increased depth of breathing
Therefore….an increase in TIDAL VOLUME
Tidal volume: the amount of air inspired and
expired with each normal breath at rest or
during exercise.
Immediate effects of exercise
• Oxygen Debt
1.
2.
3.
What do you feel like after a hard run or
match?
Have you noticed that you breathing doesn’t
go straight back to normal?
Why do you think you body has to keep
breathing fast and deep?
What your experiencing is oxygen debt!!!
Oxygen Debt: the extra oxygen consumed during
recovery in comparison to normal after a period of
strenuous exercise.
http://www.youtub
e.com/watch?v=2f
n8LZvsRhs
Vital Capacity
Vital Capacity – the greatest amount of air that can be
made to pass into and out of the lungs by the most forceful
inspiration (breath in) and expiration (expiration).
Can be affected by age, gender, size of chest, physical
fitness, race and posture.
http://www.youtube.com/watch?v=4yE89Z4qTiE
Lets have a go….
The effects of regular exercise on the
respiratory system
1. Vital capacity increases as the body becomes more
efficient
2. More alveoli for gaseous exchange so more oxygen can
pass in to the blood and carbon dioxide out
3. More capillaries for more oxygen to get in to the blood.
Therefore:
• Carbon dioxide is removed more efficiently
• Oxygen is transported to the muscles more efficiently
** More efficient is the key word!
Smoking: Effects on the respiratory
system
• Tidal volume decreases
• Vital capacity decreases
• Smoking damages the lungs especially the alveoli
so they become less stretchy and less efficient.
• As a result it makes it more difficult for the body
to remove carbon dioxide and take in oxygen.
Smoking
http://www.youtube.com/watch?v=xezVD5zVzZ4
Respiration
http://www.youtube.com/watch?v=3DDieItsDNA&feature=fvw
rel
Aerobic V Anaerobic
Aerobic
• Creates energy with oxygen
• Sports such as: long distance swimming, marathon, cross
country running. Or any part of an activity where intensity
is low.
Anaerobic
• Creates energy without oxygen
• Sport/activities such as: 100m sprint, long jump, kicking a
ball, cycle sprint. Or any part of an activity where intensity
is high
Youtube: Olympics London 2012 best bits pick out examples.
Examples
Aerobic
Anaerobic