Your SlideShare is downloading. ×
Effects of exercise on caridio respiratory system
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Saving this for later?

Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime - even offline.

Text the download link to your phone

Standard text messaging rates apply

Effects of exercise on caridio respiratory system

10,250
views

Published on


0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
10,250
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
89
Comments
0
Likes
1
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Lloyd Dean Short and Long Term Effects of Exercise on Cardio – Respiratory System
  • 2. Aims
    • By the end of the lesson you should be able to:
    • Explain the short and long term effects of exercise on the heart
    • Explain the short and long term effects of exercise on the lungs
    • Explain the short and long term effects of exercise on the blood vessels
  • 3. Component Structure Function Epiglottis Trachea Bronchus Bronchioles Alveoli Diaphragm Intercostal muscles
  • 4. Cardiovascular fitness
    • Cardiovascular fitness is not just for top sportspeople
    • Involves the circulatory and the respiratory systems
    • The heart or cardiac muscle is different to any other muscle in that it never tires
    • It must continually pump blood — without it, we would die. If the blood vessels become blocked or hardened, angina or heart attack occurs
    • Improved cardiovascular fitness increases the number of blood vessels in and around the heart, so reducing the risk of a heart attack
  • 5. Body changes during exercise
    • The level of carbon dioxide in the blood increase
    • The brain detects this and sends a signal to the lungs to breathe faster and deeper
    • Gas exchange in the lungs speeds up
    • More carbon dioxide passes out of the blood and more oxygen passes into it
    • The brain also sends a signal to the heart to beat faster, making the heart rate go up
    • The muscles squeeze on veins, sending more blood back to the heart
  • 6. Body changes during exercise
    • Cardiac output rises — more blood gets pumped to the muscles each minute
    • This means more oxygen reaches the muscles each minute and more carbon dioxide is carried away
    • Arterioles widen so that your blood pressure won’t get too high
    • Blood gets moved to where it is needed from where it is less needed, eg from your gut to your legs
    • To make this happen, blood vessels widen and constrict at different points (vasodilation and vasoconstriction)
  • 7. Body changes during exercise
    • Exercise generates heat, making the
    • body hotter
    • Blood is directed close to the skin to cool down
    • This makes the skin redden
    • The body is also cooled by sweating,
    • through evaporation
    • Blood flow to skeletal muscles increases
    • Movement at joints may increase markedly
  • 8. Short-term benefits of exercise
    • Healthier heart, muscles, bones and joints
    • More calories burnt
    • Increased energy levels
    • Reduced stress, depression and anxiety
    • Better sleep
    • Faster, sharper thinking
  • 9. Cardio-respiratory training effects
    • The heart becomes more efficient
    • The stroke volume is increased and, as a result, the resting heart rate becomes lower
    • Recovery after exercise becomes quicker
    • Blood volume and red cells increase
    • Arteries grow larger
    • The diaphragm grows stronger
    • Lung capacity increases
    • The heart’s workload is reduced
    • Less chance of heart disease
    • Increase in capillary network
    • Blood supply to the heart increases
    • The lungs become more expandable, increasing in volume