1. Ch. 7-Basics of Cardiorespiratory Endurance
Section 1 and 2

2. 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?

3. 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

4. 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

5. 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

6. Respiratory System
Body system the exchanges gases between body and environment
Lungs
Diaphragm-the muscle between chest cavity and abdomen that helps lungs work

7. 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

8. 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

9. 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

10. 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

11. 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

12. 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 Story

13. Changeable Risk Factors
Physical Activity
Avoid Tobacco
Maintain Healthy Weight
Eating Right
Having Regular Check-Ups

14. 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

15. Hypertension High Blood Pressure “Silent Killer”
Main risk factor in heart attack, stroke, and heart failure
Explanation of Hypertension
Heart Conditions:

16. What happens during a Heart Attack

18. Aortic Dissection

19. Body Invaders: Heart Attack Signs, Symptoms, Risks
New way to see inside the heart
HDL & LDL Cholesterol:
How a Heart Bypass operation works
(actual – more graphic)

20. Cardiorespiratory Endurance
Chapter 7 Lessons 3 & 4
Cardiorespiratory Endurance

21. Measuring Cardiorespiratory Endurance
Maximal Oxygen Consumption=VO2 MAX
Largest amount of oxygen your body is able to process during strenuous aerobic exercise
How is it measured?
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22. Factors Affecting Cardiorespiratory
Age
Heredity
Body Composition
Level of Conditioning

23. Factors Affect Cardiorespiratory
Age
Declines after 25
5ml/kg/min per year
Heredity
Gender
M>F
Higher hemoglobin levels
Slow-Twitch
Long distance runner
Increased ability to do aerobic work
Fast-Twitch
Weight Lifters
Little bearing on aerobic levels

24. Factors Affecting Cardiorespiratory
Body Composition
Body Fat reduces Aerobic Capacity
Reducing body fat increases fitness level
Level of Conditioning
Genetics
Trainability
FITT
Specific Goals

25. Making Most of What You Have
Factors we cannot control
Start while you’re young
Stay active
Pay attention to fitness factors you can control
Make your body work for you, rather than against you

26. Anaerobic Fitness
Muscular strength, muscular endurance, and flexibility
Require large amounts of energy
Examples:
Sprinting
Fast-Break in Basketball
Fly Route in Football
Kick-Boxing
Running up two flights of stairs

27. Interval Training
A program in which high- intensity physical activities alternate with low- intensity recovery bouts for several minutes at a time
What have we done?
Other examples?
“Insanity”
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28. Physical Activities
Aerobic
Anaerobic
Continuous activity that requires large amounts of oxygen
Examples:
Jogging/Running
Swimming
Bicycling
Skiing
Dancing
Activity that requires high levels of energy and is done for only a few seconds or minutes at a high level of intensity
“Without Oxygen”
Talk Test
Examples?

29. Group Work
Pick a sport
List the components of the sport that are aerobic
List the components of the sport that are anaerobic