This document discusses the three energy systems - phosphagen, lactic acid, and oxidative systems - that provide energy for physical activity. It explains that the phosphagen system provides immediate energy for intense bursts of activity lasting less than 10 seconds, while the lactic acid system fuels short to high intensity exercise from 30 seconds to 3 minutes. The document emphasizes that a healthy lifestyle including proper nutrition is important to optimize the body's energy systems.

1. PHYSICAL
EDUCATION and
Health

2. Opening Prayer

3. Act. 1: LET'S FIND OUT
• Have you ever done push-ups and running?
• What are the two activities have in common?

4. OBJECTIVES:
At the end of the lesson, the students should be able to:
1. Discussthepurposeanduseofdifferentenergy
system;
2. Explain how to optimize the energy
systems for safe and improved
performance;
3. Assosiate one’s diet to the efficiency of
the energy system.

5. What is Energy?
Ability to do Work
What are the systems?
A set of connected things

7. • Our body needs specific amount of energy
when we do physical activities. When we
exercise, a low or high amount of energy is
supplied to muscles depending on the
duration, intensity, and nature of the exercise.
• Activities like sprinting and jumping require a
large amount of energy used in short period
of time. On the other hand, marathon
running and long- distance swimming require
low but steady amount of energy over a
longer period of time.

8. • The food that we eat is a source of energy.
• There is a complex chemical process called cellular
respiration in which our body takes in food and uses it to
convert and produce adenosine triphospate (ATP).
• ATP supplies energy to muscle cells for muscular
contraction during physical activity. Creatine phospate
(CP), like ATP,is stored in muscles cells. When broken
down, a large amount off energy is released.
• Three energy systems work together as we exercise.
However, a specific energy system can dominate
depending on the intensity and type of activity that is
being done.

9. Phosphagen System (Immediate Energy
System)
• This system refers to ATP-CP Adenosine or Triphosphate-
Creatine Phosphate. It is called the immediate energy
system, because it is the first system that can be used to
produce energy when doing a physical activity. This system is
anaerobic, which means it does not use oxygen.
• The ATP-PC system utilizes the relatively small amount of
ATP already stored in the muscle this immediate energy
source. When the body's supply of ATP is depleted, which
occurs in a matter of seconds, additional ATP is formed from
the breakdown of phosphocreatine (PC) -- an energy
compound which is produced through muscle contraction.

10. Phosphagen System (Immediate Energy
System)
Athletes who compete in sports that
require high amounts of short duration
acceleration-shot-putters, weightlifters,
American football linemen, gymnasts, or
sprint-distance speed skaters use this
energy system. For short and intense
movement lasting less than 10 seconds, the
body mainly uses the ATP-PC, or creatine
phosphate system.

11. Lactic Acid System (Anaerobic Glycolysis)
• The Lactic Acid System, also called the anaerobic
glycolysis system, produces energy from muscle
glycogen—storage from glucose.
• Glycolysis, or the breakdown of glycogen into glucose,
can occur in the presence or absence of oxygen.
• Glycolysis is the pathway that splits carbohydrates
(glucose or stored glycogen) in order to generate ATP to
power cellular work.
• This system works during short to high intensity
exercises.

12. Lactic Acid System (Anaerobic Glycolysis)
• The Lactic Acid Or Anaerobic
Glycolysis system, as well as the ATP-
CP system are capable of high
intensity levels, and do not rely on
oxygen for fuel.
• Last for 30 seconds to 3minutes
• Weightlifting, circuit training
400meter race.

13. Oxidative System (Aerobic System)
• The most complex energy system is
the aerobic or oxygen energy
system.
• Provides most of the body’s ATP.
• This is the most utilized energy
system of the 3.
• Provides energy for Low Intensity
Activities.

14. Oxidative System (Aerobic System)
• This system produces ATP as energy is
released from the breakdown of nutrients
such as glucose and fatty acids.
• This system is also the pathway that
provides ATP to fuel most of the body’s
energy needs not related to physical
activity, such as building and repairing
body tissues, digesting food, controlling
body temperature and growing hair.

15. Healthy lifestyle choices to optimize the
energy systems
Therefore, it is also important to
discuss how to optimize our energy
system by being guided on how to
have a healthy lifestyle, "Good
Nutrition" to help our body produce
the energy we need in everyday
tasks.

16. Four Types of Eating:
Fuel Eating is when you are
eating foods that support
your body and it's needs.

17. Four Types of Eating:
Fun Eating is eating any foods that you
love to eat that don't necessarily give
you anything back. In other words food
that tastes great and you enjoy but
don't offer any real nutritional value
(i.e. cake, wine, potato chips, candy,
etc.).

18. Four Types of Eating:
Fog Eating is anytime you eat without
awareness. You are munching on chips without
even tasting them, you are snacking on your
kids' peanut butter and jelly crusts while making
lunch, you finish off a bag of candy before you
even realize how much you ate and don't even
remember what it tasted like.

19. Four Types of Eating:
Storm Eating is binge eating or eating
out of control. It is anytime you can't
stop or yourself. Sometimes this
happens if we let ourselves get too
hungry and sometimes it happens when
we have an overwhelming emotion that
we do not want to feel.

20. Activity : Let's Get Energized
• Divide the class into 5 groups.Ask each group to think of and
list down physical activities that use any or all of the three
energy systems. Do these activities.
Anaerobic A-Lactic
System
Anaerobic Lactic
Systems
Aerobic Energy
System