Module 2 Sports Physiology
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What is physiology
Science behind how human body works
What is exercise physiology
It explains how the human body’s response to exercise or physical activity
What is sport physiology
Application of physiological principles to improve sports performance
What is cardiorespiratory system
Cardiovascular system(heart, blood, blood vessels) Respirstory system (lungs and airways)
Functions of cardiorespiratory
Maintenance of blood pressure Thermoreregulation Distribution of hormones Transport of nutrients, waste products Transport of O2 and Co2
How does Diaphragm work?
Pump carbon dioxide out, oxygen enter by contracting, descend into abdomen, thoracic volume increases, but pressure down, so air in drawn in.
How did Diffusion occur?
When inhaling, oxygen enter the alveoli, diffuses into the blood through capillaries, carbon dioxide is released from the vein at the same time
What is Tidal volume?
Volume of air breathed in and out with each breath. Usually its 500ml per inspiration, about 7ml/kg of body mass for young adult
What is Ventilation
The air movement between the lungs and environment
During light exercise, is it true that both breathing rate and tidal volume contribute to the increase in ventilation?
No, only tidal volume.
True or False? An athlete exercising at the the moderate and intense level will have increase in ventilation due to increase in tidal volume and breathing rate.
True
Is it true that the increase in tidal volume will stop at 50% of vital capacity (the maximum amount of air a person can breathe after breathing in as much as possible.
No, its 60%
What happen when athletes train at high attitude?
Cardiorespiratory system changes at high altitude where there is low oxygen level, air pressure lower. 1) Hypoxia occurs; breathing and heart rate double. 2) Acclimatization occurs whereby the body will have additional red blood cells and capillaries.
Where does the oxygenated blood enter in the heart?
Through the left atrium and then into the left ventricle for transport to the rest of the body
Where does deoxygenated blood from the rest of the body enter in the heart?
Through the right atrium and then the right ventricle and then pump into the lungs