1. ENERGY SYSTEMS LESSON 5 Energy Continuum Energy Continuum

2. LEARNING OBJECTIVES 1. Can I explain how the three energy systems work throughout an activity? 2. Can I explain the factors affecting the energy system used?

3. STARTER Explain the controlling enzymes for each energy system Explain the controlling enzymes for each energy system What is a controlling enzyme? What is a controlling enzyme? Which ones control which system? Which ones control which system?

4. CONTROLLING ENZYMES Energy SystemControlling Enzymes Activator ATP/PC SystemCreatine kinaseIncrease in ADP Lactic Acid system Phosphofructoki nase Decrease in PC Aerobic SystemPhosphofructoki nase Increase in adrenalin/decrea se in insulin levels

5. ENERGY CONTINUUM This is ‘the relative contribution of each energy system to ATP re-synthesis determined by the intensity and duration of exercise.’ In any sporting situation, energy is provided by all three energy systems, and the contribution of each is determined by the intensity and the duration of the exercise. Some activities/sports are mainly aerobic while others are anaerobic. Energy systems rarely work in isolation.

6. TASK 1 Identify the predominant energy system used in the following types of exercise: Activity% ATP/PC% Lactic Acid% Aerobic 100m Sprinter Shot Putter Marathon Runner 800m Runner Tennis Player Netball Centre Football Goalkeeper Badminton 200m Swimmer

7. TASK 2 Explain how the following affects the energy system used by athletes: Explain how the following affects the energy system used by athletes: Exercise Intensity and Duration (above) Energy System Threshold O2 Transport/Supply Food/Fuel available Enzyme Activation Levels Fitness Level

8. PLENARY Discuss how the Energy Continuum works during a 800m Freestyle Swimming Race Discuss how the Energy Continuum works during a 800m Freestyle Swimming Race