PE

1. LESSON 2
ENERGY SYSTEM

2. Learning Competencies
• Explains how to optimize the energy systems for safe and improved
performance
• Explains relationship of health behaviors
• eating habits
• sleep and
• stress management
to health risks factors and physical activity assessment performance

3. ENERGY SYSTEM

4. OBJECTIVES
Know the meaning of energy system
Identify the different kinds of energy
System
Discuss the importance of Energy System
Perform an recreational activity where
energy system can be used.

5. 3 ENERGY SYSTEM
•ATP-PC
•LACTIC ACID
•AEROBIC

6. ATP-PC
• The ATP-PC system uses a stored molecule in the muscle called
creatine phosphate (CP) to resynthesise ATP. It is the breakdown of
this molecule that releases the energy needed to rejoin the ADP and
free phosphate to form ATP. This system is anaerobic as it works
without oxygen, and does not produce any waste products.
• ATP is required for the biochemical reactions involved in any
muscle contraction. As the work of the muscle increases, more
and more ATP gets consumed and must be replaced in order
for the muscle to keep moving.

7. ATP-PC
• The ATP-CP system is the system that is responsible for very short
(i.e. 1-2 repetitions), explosive movements. This energy system is
only good for about 6-10 seconds of activity. Using cars as an
analogy, the ATP-CP system would be your nitrous boost. This system
uses ATP that is stored in the muscles to generate power. The
initiation of the ATP-CP system is nearly instantaneous. Examples of
an activity that would utilize ATP-CP are an explosive vertical jump, or
a 1-2 rep max lift.

8.  Immediate Energy System
 Not Create Sufficient
duration to create a great
deal of waste product

9. THE GLYCOLITIC SYSTEM OR ANAROBIC
GLYCOSIS
•The glycolytic system, or anaerobic
glycolysis, is the second of three energy-
producing systems in our bodies, following
the creatine phosphate system. It relies on
carbohydrates as a fuel source to make
energy.

10. •The glycolytic system lasts longer than the
creatine phosphate system (which powers
you through 30-second bursts of high-
intensity activities like sprinting and
weightlifting), but usually not more than
two minutes while you are working hard.

11. • The anaerobic lactic (AL) system (also known as fast glycolysis)
provides energy for medium to high-intensity bursts of activity that
lasts from 10 seconds to a max of approximately 90 seconds.
THE GLYCOLITIC SYSTEM OR ANAROBIC
GLYCOSIS

12. • The ability to sustain this energy system is commonly viewed as an
important athletic attribute in team sports such as basketball, hockey,
ringette, and soccer, where shifts, or transitions, are a part of the
game. Individual sports that consist of rallies or routines, such as
tennis, figure skating, gymnastics, and skiing, utilize this system.
Finally, there are several events within particular sports that rely
almost exclusively on this energy system, such as rowing (500m), and
middle distance runners (400m-800m).
THE GLYCOLITIC SYSTEM OR ANAROBIC
GLYCOSIS

14. Oxidative (Aerobic) System
• The oxidative system, the primary source of ATP at rest and during
low-intensity activities, uses primarily carbohydrates and fats as
substrates. Following the onset of activity, as the intensity of exercise
increases, there is a shift in substrate preference from fats to
carbohydrates. During aerobic exercise of high-intensity, energy is
mostly gained from carbohydrates, provided there is enough of them.

16. WHAT ENERGY
MATTERS?