1. Energy Systems for Exercise Presenter: Ms. Lea Green

4. Cells in the body need energy to function FOOD=ENERGY (E)

5. Cells don’t get Energy directly from food, it must be broken down into: ATP -Adensosine TRIphosphate ATP = a form of energy one can immediately use, it is needed for cells to function & muscles to contract

9. 0 sec 4 sec 10 sec 1.5 min 3 min + Strength – Power: power lift, shot put, golf swing Sustained Power: sprints, fast breaks, football Anaerobic Power – Endurance: 200-400 m dash, 100 m swim Aerobic Endurance: Beyond 800 m run Immediate/short-term Aerobic-oxidative non-oxidative systems system

11. The ATP Molecule Adenosine Adenosine Energy a. Adenosine Triphosphate (ATP) b. The breakdown of ATP: P P P P P P ATP = ADP + energy for biological work + P (ADP = Adenosine Diphosphate) Energy for cellular function

12. For contractions to continue… ATP must be REBUILT This comes from the splitting of CP (Creatine Phosphate a Hi energy source, automatic) When ATP is used – it is rebuilt – as long as there is CP Energy released from CP breaking down, resynthesizes the ADP & P

13. REMEMBER – only small amounts of ATP are stored = only 2-3 sec. of Energy ATP-CP = 8-10 sec. of Energy The usefulness isn’t the AMOUNT of Energy but the QUICK & POWERFUL movements For longer periods of work = The Aerobic & Anaerobic Energy System must be utilized

14. The Immediate Resynthesis of ATP by CP Creatine P Creatine P Energy High energy bond a. Creatine Phosphate (CP) b. CP = Creatine + energy for resynthesis of ATP + P Adenosine P P P c. ADP + energy from CP + P = ATP (reversal of ATP = ADP + P + energy for work)

16. Since glycogen is stored in the muscle & liver, it is available quickly This system provides ATP when ATP-CP runs out Again, ATP-CP lasts for a few seconds, the Anaerobic Energy System allows for 2-3 minutes of work

18. Without Oxygen Glucose = 2ATP + 2LA (digested component of carbohydrates) Glycogen = 3ATP + 2LA (the storage form of glucose)

19. With Oxygen Glucose + O2 = 36ATP + H2O + CO2 Fatty Acids + O2 = 129ATP Body Fat is a great source of ENERGY

23. 4.Anaerobic Energy System = Carbohydrates are the only fuel source 5.With prolonged exercise, Carbohydrates are the first fuel choice, as exercise continues, FAT becomes predominant 6.Protein is not a main fuel source except in an emergency

25. Examples Anaerobic 70-80% Anaerobic Aerobic 20-30% Aerobic Wt. Training Stop & Go Sports Jogging Gymnastics Tennis Marathons Football Soccer Cycling Baseball Field Hockey Aerobic Dance

26. Shelton State Wellness Center PED 223 Methods of Instruction