section 1 and 2. define aerobic activity? how do they benefit the body? what is the circulatory...
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Ch. 7-Basics of Cardiorespiratory
EnduranceSection 1 and 2
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Introduction Define aerobic activity? How do they benefit the body? What is the circulatory system? What is the respiratory system? What are problems or diseases that
can develop? What can I do to prevent problems? What is blood pressure?
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Aerobic Activities and the Body Continuous activity
that requires large amounts of oxygen
“With Oxygen” Strengthen your
heart Strengthen your
lungs More efficient using
oxygen
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Circulatory System Consists of the
heart, blood, and blood vessels
Hemoglobin-an iron rich compound in blood that helps carries oxygen
Stroke Volume-amount of blood pumped per beat
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Blood Vessels Arteries, capillaries,
and veins Arteries-carry blood
from the heart to body
Capillaries-deliver oxygen and nutrients to individual cells
Veins-deliver blood back to the heart
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Respiratory System Body system the
exchanges gases between body and environment
Lungs Diaphragm-the
muscle between chest cavity and abdomen that helps lungs work
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Benefits of Aerobic Activity Increases stroke
volume Lowers resting heart
rate=more efficient Muscles more
efficient Builds on
itself=more you condition, the more strenuous activity you are able to do
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Long Term Benefits Cardiorespiratory
Endurance-the ability for the body to work continuously for long periods of time
Lower risks of diabetes, CVD, and obesity
Increased energy Less stress Look and feel better
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Lifestyle Diseases Diseases that are a
result of certain lifestyle choices
Inactivity Being overweight Smoking or other
forms of tobacco Eating foods high in
fat and cholesterol
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Cardiovascular Disease (CVD) Any medical disorder
that affects the heart or blood vessels
Leading cause of death in US
Atherosclerosis-condition in which fatty deposits called plaque build up in arteries, restricting blood flow
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Cardiovascular Diseases Heart Attack-
blockage of blood vessel
Sudden Cardiac Arrest-during game or practice
Stroke-blood flow to brain is blocked
Peripheral Vascular Disease-legs, arms
What happens during a Heart Attack
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Diseases of the Lungs Lung Cancer-more
than half smoking related
Emphysema-disease in which airways of the lungs lose their normal elasticity making them less efficient in helping to move air
Emphysema Man – True Storyhttps://www.youtube.com/watch?v=VUecUEkECrA
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Changeable Risk Factors Physical Activity
Avoid Tobacco
Maintain Healthy Weight
Eating Right
Having Regular Check-Ups
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Blood Pressure Force of blood in
the main arteries Systolic-when heart
muscle contract (top number)
Diastolic-when heart muscles relax (bottom number)
Ex: 120/80
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Hypertension High Blood Pressure
“Silent Killer”
Main risk factor in heart attack, stroke, and heart failure
https://www.youtube.com/watch?v=tTKnNp7bw8Y
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Review What is aerobic activity? Examples? How can they benefit the body? What is the circulatory system? Parts? What is the respiratory system? Parts? What are diseases associated with
each system? How can we prevent these diseases? What is blood pressure? Systolic and
Diastolic?
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References Rainey, D. and Murray, T.
“Foundations of Personal Fitness.” McGraw-Hill Companies. Glencoe. Woodlands, CA. 2005