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LESSON 2:
ENERGY SYSTEM
PHYSICAL
EDUCATION
AND HEALTH 1

EXPECTATIONS
This lesson will help you to:
 Differentiate the different
types of Energy Systems
 Recognizes the
importance of Energy
system in our body.

ENERGY SYSTEM
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

ENERGY SYSTEM
Activities like sprinting and
jumping require a large
amount of energy used in
short period of time.

ENERGY SYSTEM
On the other hand,
marathon running and long-
distance swimming require
low but steady amount of
energy over a longer period
of time. It is important for
our body to get the energy
it needs to effectively
perform these physical

ENERGY SYSTEM
The food that we eat is a
source of energy. Eating
before doing exercise can
contribute to performance.

ENERGY SYSTEM
There is a complex chemical
called cellular respiration in
which our body takes in
food and uses it to convert
and produce adenosine
triphosphate (ATP).

ENERGY SYSTEM
ATP supplies energy to
muscles cells for muscular
contraction during physical
activity. Creatine phosphate
(CP), like ATP, is stored in
muscles cells.

ENERGY SYSTEM
When it is broken, a large
amount of energy is
released. Three energy
systems work together as
we exercise. However, a
specific energy system can
dominate depending on the
intensity and of type of

What are the three energy
systems?

Anaerobic A-Lactic
or (ATP-CP) Energy System
Is a dominant source of
muscles energy for high
intensity physical activity.

Anaerobic A-Lactic
It provides high burst of start
up energy that last around ten
seconds or less.

Anaerobic A-Lactic
Provides immediate energy
without requiring any oxygen
(Anaerobic) and does not
produce lactic acid (a-lactic).
Many athletes who participate
in sports competitions require
short amounts of acceleration.

Anaerobic A-Lactic
Athletic events like shot put,
weight lifting, and 100-meter
sprint are examples of physical
activities that utilize the ATP-
CP energy system.

Anaerobic Lactic
(Glycolytic) Energy
System
Is also known as glycolytic
energy system, an energy
system that supplies energy
for medium to high intensity
physical activities.

Anaerobic Lactic
(Glycolytic) Energy
System
These high intensity activities
usually last from ten seconds
to two minutes. When an
athlete sprints for 400 meters
lactic acid builds up in blood
and muscle cells.

Anaerobic Lactic
(Glycolytic) Energy
System
Normally there is a shortness
of breath, and burning
sensation in the muscles once
lactic is produced.

Anaerobic Lactic
(Glycolytic) Energy
System
The difference between the
two system is amount of time
that the system can work.

Aerobic Energy System
Most of sports and activities
used aerobic energy system.

Provides energy for low
intensity physical activities
that last from two minutes to a
few hours.

Aerobic energy system,
compared to ATP-CP and
gycolytic energy system ,
requires much longer oxygen
in muscles in doing physical
activities like:

Long distance swimming,
running and playing ports (e.g.
basketball, soccer, futsal).

Aerobic energy system
continually produces ATP energy
to muscles as long as oxygen is
available to muscles in the body.
Unlike anaerobic lactic system,
aerobic energy system does not
produce lactic acid since oxygen
is available to the muscles.

Most sports and physical
activities use these energy
systems. Though there are times
when one energy systems
dominates during a specific type
of physical activity, it is important
to understand that all energy
systems are active.

HOPE-11-lesson-2-energy-system.pptx. P.E

Directions: Divide your self into 5 groups.
Think and list down physical activities that use
three energy systems. Perform these
activities.
Activity 2: let’s Get
Energized
Anaerobic A-
Lactic System
Anaerobic
Lactic System
Aerobic Energy
System

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HOPE-11-lesson-2-energy-system.pptx. P.E

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