2. exercise
any bodily activity that enhances or maintains
physical fitness and overall health and wellness.
It is performed for various reasons including
strengthening muscles and the cardiovascular
system, honing
athletic skills,
weight loss
or maintenance,
as well as for
the purpose of
enjoyment.
5. Effects of training
General Health of Heart Muscle
The heart is a large muscular
organ that pumps blood
throughout the body. Valves inside
the heart open and close.
Oxygen – rich Blood
Enters the heart from the lungs and
goes out to the body
Oxygen – rich Blood
Enters the heart from the body and
goes out to the lungs
Principles of use and
disuse applies
6. Effects of training
Stroke Volume Heart
Greater volume of blood
per heartbeat pumped
through the body of the
trained person than the
untrained person
7. Effects of training
Pulse Rate
The trained individual has a lower pulse
rate than the untrained person
8. Effects of training
Blood
The rate of lactic acid is lower
in the trained individual,
resulting in a lower blood
lactate concentration.
Lactic Acid- the substance
that is transferred from
glucose when a muscle
contracts.
The more lactic acid, the
more fatigued an
individual will become.
9. Effects of training
Arterial Blood Pressure
Increase in blood
pressure is less in
trained individual than
in the untrained
individual
10. Effects of training
Red Corpuscles
Bone Marrow
becomes redder,
indicating an
increased rate of
blood manufacture
11. Effects of training
Respiration
Trained - 6-8
breaths/min
Untrained- 18-20
breaths/min
Deep diaphragmatic breathing in the
trained person, hence the diaphragm
moves very little. A trained individual
takes in smaller amounts of air in greater
amounts of air and absorbs oxygen from
the air in greater amounts than untrained
individuals
12. Effects of training
Nervous System
Enhances nerve-
muscle coordination
Nervous fatigue maybe
lessened by pleasant physical
activity
Nervous fatigue accumulated
through anxiety or mental work
is offset through muscular
activity
13. Factor affecting fitness
Tobacco and Fitness
Smoking
Speeds up the
pulse rate, raises
the blood
pressure,
constricts the
blood vessels
and may cause
damage
14. Factor affecting fitness
Alcohol and Fitness
Alcohol is
depressant. It
depresses the
central nervous
system, affecting
memory,
judgment and
decisions.
The control of lower brain centers
is lost, reaction time is slowed,
physical and emotional pain are
reacted to more slowly
15. Factor affecting fitness
Drug and Fitness
•Detach the
person from
reality.
•Make oblivious to
danger.
•Induce a sense of
well- being by
postponing
feelings of fatigue
When one has started
it is difficult to stop!!