1. Energy Production for Activity

2. Anaerobic vs. Aerobic Energy Systems
ATP-CP : 10 sec. Or less
Glycolysis : Few minutes
Aerobic
Krebs cycle
Electron Transport Chain
2 minutes +

3. Energy Transfer Systems and Exercise
100%
Anaerobic Glycolysis
% Capacity of Energy System
Aerobic Energy System
ATP - CP
10 sec
30 sec
2 min
5 min +

4. One molecule of adenosine and three molecules of phosphate
Energy Sources for Muscle Contraction and the Restoration from Exercise
Energy is required for muscular contraction which comes from the conversion of food stuffs at the muscle level into a high energy compound known as adenosine triphosphate ATP
One molecule of adenosine and three molecules of phosphate

5. Energy Sources for Muscle Contraction and the Restoration from Exercise
Energy required for muscular contraction is released by the conversion of high energy ATP into ADP+P (adenosine diphosphate + phosphate).
As one phosphate is broken down Adp +P is formed from ATP and energy is released
There is a limted amount of ATP stored in the muscle cells thus ATP supplies must be continually replenished to facilitate continued activity

6. The ATP-CP System (Anaerobic Alactic or Phosagen System)
Creatine phosphate which is stored in the muscle cell, is broken down into creatine (C) and phosphate (P).
This process releases energy which is used to resynthesize ADP +P into ATP
CP is stored in limited amounts in the muscle cell which means energy can be supplied in this system in limited amounts
8-10 seconds is time frame for this system
This system is a chief source of energy for extremely quick and explosive activity such as: 100m dash, weight lifting, jumping and throwing events, diving
Restoration
Phosphogen restoration occurs quite rapidly
First 30 seconds 70% is restored
3-5 minutes it is fully restored 100%

7. The LACTIC ACID System (Anaerobic Lactic or Anaeorbic Glycolysis)
In this system glycogen is broken down which is stored in the liver and muscle cells releasing energy to resynthesize ATP from ADP+P
Due to the absence of O2 during the breakdown of glycogen a by-product called lactic acid (LA) is formed
When high intensity work is continued for prolonged periods of time large quantities of LA accumulate in the muscle which limits the rate of processing causing fatigue
The time frame for this system is up to approximately 40 seconds
Restoration
Full restoration of glycogen requires longer time, sometimes days
Depending on the activity and the diet of the individual
2 hrs 40% restored
5 hrs 55% restored
24 hrs 100% restored
This is in the case of intermittent activity where rest/recovery periods are incorporated and the work sessions are not continuous
If activity is longer and continuous
10 hrs 60% restored
48 hrs 100% restored

8. The O2 System or the AEROBIC System
The aerobic system requires approx seconds to commence producing energy for the resynthesis of ATP
The heart rate and respiratory rate must be increased sufficiently to transport the required amount of oxygen to the muscle cells in order that glycogen be broken down in the presence of oxygen
The Aerobic system is the primary source of energy for events of duration between 2 minutes and 2-3 hours

9. Rankings of Rate and Capacity of ATP Production
Rate of production-How fast ATP can be produced
1.Phosagen ATP-CP
2.Fast Glycolysis
3.Slow Glycolysis
4.Oxidation of Carbohydrates
5.Oxidation of Fats and Proteins

10. Rankings of Rate and Capacity of ATP Production
Capacity of Production- How much ATP can be produced
1. Oxidation of Fats and Proteins
2. Oxidation of Carbohydrates
3. Slow Glycolysis
4. Fast Glycolysis
5. Phosagen ATP-CP

11. Video Review of Presentation