Page 15 - Lesson 5.xps

Physical and Physiological Aspects of Physical Education MODULE-2
Dimension of Physical
Rate of Gas exchange Increase Education and Yog

The rate of diffusion of gas between alveoli and blood also increases, during
maximal exercise exchanging capacity for oxygen increases by 300%. Their
short term effects provides many long term benefits.
5.3.2 Long Term Effects of Exercise

Efficiency of respiratory Muscles Increases
Note
The strength and endurance of respiratory muscles increases due to rapid
inhalation and exhalation to meet the oxygen demand by the body. That may be
seen in larger lung volumes of trained persons.

Lung volume Increases

Endurance activity done for long period results in increase of volume and capacity
of lungs. Larger volume of air exhale after deepest possible inhale is known as
vital capacity. Vital capacity increases up to 5-6 liters as compared to inactive
individual who is having 3-4 liters.

Pulmonary Diffusion Increases

During the maximal activity alveoli size increases, which provide more space to
exchange oxygen and carbon dioxide.

Residual Volume Increases
The volume of air that remains in lungs after maximal expiration is known as
residual volume. During the activity residual volume increases which helps to
exchange the gases in normal limits, it is a store house where air can remain.

Optimum amount of oxygen flow in our body helps in concentration, alertness,
makes immune system stronger, gives energy etc., it has also emotional and
social benefits.

DO YOU KNOW?

The air that is inhaled is about 20-percent oxygen, and the air that is exhaled
is about 15-percent oxygen, so about 5-percent of the volume of air is
consumed in each breath and converted to carbon dioxide. Therefore, a human
being uses about 550 liters of pure oxygen (19 cubic feet) per day.
https://health.howstuffworks.com/human-body/systems/respiratory/
question98.htm

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