2. OCR Level 3 Cambridge Technicals in Sport Unit 3: Principles of Anatomy and Physiology in Sport

3. Your heart Beats at a steady rate and ensures your blood moves around your body, but what happens when you exercise?

4. During exercise Your heart beats faster Your lungs provide more oxygen to your muscles. Your energy systems ensure you have enough energy to exercise. You’ve produced lactic acid which can cause a burning sensation in your muscles, you’ve lost essential water, you’ve become breathless.

5. Level 1/2 Energy systems When exercising, the body fuels itself using: carbohydrates fats proteins

6. After you exercise You must ‘cool down’ properly Your heart rate returns to normal The amount of oxygen needed in your muscles reduces The lactic acid goes from your muscles You need to replenish the water you have lost.

7. What will you learn? The structure and function of the skeletal system The structure and function of the muscular system The structure and function of the cardiovascular system and energy systems The structure and function of the respiratory system

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