2. It is defined as the Ability or Capacity to do
Work.
All activities of the body, including thinking,
involve energy consumption.
When resting body’s energy consumption-
• Skeletal Muscles & the Heart – 25%
• The Brain – 19%
• The Kidneys -10%
• Liver % spleen _27%
• Others -19%
3.
4.
5.
6. Energy is produced in the presence of
sufficient Oxygen.
Aerobic systems produces large amounts of
ATP without fatiguing by products hence it is
the system used for long distance/endurance
events.
7. Produce energy without depending on Oxygen
Without oxygen = Activities that requires a
large burst of energy over a short period of
time.
Anaerobic Glycolysis= Production of ATP
from Carbohydrates without oxygen
(breakdown of glucose)
8. ATP – Adenosine Triphosphate
ATP= a form of energy one can immediately
use, it is needed for cells to function &
muscles to contract.
Adenosine triphosphate is the basic energy
currency for all biological work- When it is
broken down, energy is released.
9. Only small amounts ATP is stored= only 2-3
sec. of Energy, therefore the rest is stored as:
Glucose = Glycogen ( muscle & liver)
Fatty Acids = Body fat
Amino Acids = Growth, repair or excreted
as waste.
For longer periods of work = The Aerobic &
Anaerobic Energy System be utilised.
10. ATP is stored in the muscle & liver for “Quick
Energy”.
Nerve impulses trigger breakdown of ATP into
ADP.
ADP= Adenosine Diphosphate & 1 Phosphate.
The splitting of the Phosphate bond= Energy
for work.
Ex. Muscle Contraction, Moving hand from a
hot stove, jumping & Throwing
11.
12. Lactic acid present in the muscle
decreases muscle pH, which in turn
decreases the amount on glycolytic
enzymes & the rate of ATP resynthesis,
causing FATIGUE!
Glycolytic enzymes are responsible for
breaking down glycogen.
13. Food is the basic source of energy(fuel)
for the body.
The processes involved in the energy
intake, storage, & use by the body are
collectively called the Metabolism.
14.
15. Energy used for basal metabolism becomes
heat.
This heat is mainly dissipated through the skin.
Thus, BMR is approximately proportional to
the surface area of the animal.
When body has used the energy from all of the
consumed food , it then starts using up your
energy stores.
