3 types of energy systems

1. PHYSICAL
EDUCATION 2

2. Is energy
unlimited?

3. ENERGY SYSTEMS
Lesson 2

4. LET'S DEFINE
OUR TERMS
• Energy. is the ability to do work.
• System. a set of connected things.

5. WHAT IS
ENERGY?
Like an automobile only runs on
gasoline, the human body runs on
only one kind of energy: chemical
energy. More specifically, the body
can use only one specific form of
chemical energy, or fuel, to do
biological work – adenosine
triphosphate (ATP).

6. WHERE DOES
ENERGY COME
FROM?
The food that we eat is a
source of energy. Eating
before doing exercise can
contribute to performance.
There is a complex
chemical process called
cellular respiration in
which our body takes in
food and uses it to convert
and produce adenosine
triphosphate (ATP). ATP
supplies energy to muscle
cells for muscular
contraction during physical
activity.

7. 3 KINDS OF
ENERGY SYSTEMS

8. ANAEROBIC A-LACTIC OR ATP-
CP
• Anaerobic A-Lactic or ATP-CP is a dominant source of muscle energy
for high intensity physical activities. It provides high bursts of start
up energy that lasts around ten seconds or less. ATP-CP provides
immediate energy without requiring any oxygen (anaerobic) and does
not produce lactic acid (a-lactic).
ENERGY SYSTEM

9. • Many athletes who participate in sports competitions
require short amounts of acceleration. Athletic events like
the shot put, weight lifting, and 100-meter sprint are
examples of physical activities that utilize the ATP-CP
energy system. However, the ATP-CP system will not
supply ATP again until the muscles have rested and have
been able to regenerate.

10. ENERGY SYSTEM
•Anaerobic Lactic (Glycolytic)
Anaerobic Lactic is also known as the glycolytic
energy system, an energy system that supplies energy
for medium to high intensity physical activities. 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

11. Normally, there is a shortness of breath, and a burning
sensation in the muscles once lactic acid is produced.
Same as with ATP-CP, the anaerobic lactic system does
not require oxygen but is capable of supplying energy
for high intensity activities. The difference between the
two systems is amount of time that the system can
work. Thus, if an athlete exceeds ten seconds while
sprinting, the anaerobic lactic system kicks in to provide
energy.
ENERGY SYSTEM

12. •Aerobic Energy System
Most of sports and activities use aerobic energy
system. 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 glycolytic energy system,
requires much longer oxygen in muscles in doing
physical activities like long distance swimming
running and playing sports (e.g. basketball, soccer,
futsal).
ENERGY SYSTEM

13. •If a person exercises for 8 minutes, aerobic
energy system will become a dominant source
of that person’s energy. 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
ENERGY SYSTEM

14. •Most sports and physical activities use these energy
systems. Though there are times when one energy
system dominates during a specific type of physical
activity, it is important to understand that all
energy systems are active. Each energy system
changes during the activity depending on its
duration and intensity. Therefore, once we engage in
physical activities or sports, all three energy
systems may be in use but in varying degrees.
ENERGY SYSTEM

15. Break time na
gaaaaarr