1. Exercise and the respiratory system
Topic 1.2.1
Exercise and the respiratory system
Keywords:
Glucose - a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.
Tidal volume: amount of air breathed in or out during normal breathing.
Residual breathing: the amount of air left in the lungs after a maximal exhalation
Vital capacity: amount of air that can be breathed out, after a deep breath in.

2. Learning objectives
Developing: Explain effects of smoking and drinking
Secure: Examine these effects on participation.
Exceeding: Evaluate the long term and short term effects on participation.

3. Teacher explanation

4. Alcohol
Teacher explanation
Long term effect = poor respiration and blood pressure decreases. Breathing reduces.
Alcohol poisoning.

5. The Respiratory System
Teacher explanation
The Respiratory System
The harder and longer (intensity and
time) the physical activity, the more
oxygen is needed to keep the muscles
working
Harder longer physical activity also
means more carbon dioxide is produced
Working very hard may result in the body
needing more oxygen than it can get,
this is known as oxygen debt

6. Aerobic respiration
Teacher explanation
Enough oxygen will allow you to exercise for a longer duration only if the intensity is not to hard.
The oxygen breathed in is diffused into the circulatory system.
Breathing becomes more regular and deeper.
Aerobic = extra oxygen
Glucose + oxygen Carbon dioxide +water+ energy

7. Anaerobic fitness No oxygen is released initially.
Teacher explanation
No oxygen is released initially.
Some sports will wholly depend on anaerobic respiration.
These sports require a single maximum burst of energy. (Athletic fielding events).
Because this is short the energy is used from the body.

8. Teacher explanation

9. Short term effect
Teacher explanation
Oxygen inhaled regularly for aerobic respiration; tidal volume increases.
Air exhaled to stop carbon dioxide.
Gaseous exchange in the alveoli
Waste water is released.
Release of energy.

10. Teacher explanation

11. Teacher explanation

12. The long term effect of exercise
Teacher explanation
The long term effect of exercise
Diaphragm and intercostal muscles become stronger. As a result lung volume increases.
Alveoli more efficient.
Muscles can work for longer at a moderate level.
Increase vital capacity.
More Co2 leaves the body.
More oxygen to the working muscles.
Interval training results in oxygen debt
During exercise the vital capacity shows a decrease whilst the residual volume increases .

13. Long term effects of exercise
Teacher explanation
New capillaries are formed. The heart muscle is stronger leading the delivery of oxygen to be increased which reduces lactic acid build up. .

14. Lets sing together!!

15. Who am I????
Learning activity
In your group you will all have a post it note, on your forehead, you have to guess what the name is, you have 30 seconds to ask closed questions, after this time you can give your answer.