1. Cardiorespiratory Endurance
Chapter 3
Cardiorespiratory Endurance
Fahey/Insel/Roth, Fit & Well: Core Concepts and Labs in Physical Fitness and Wellness, Chapter 3
© McGraw-Hill Higher Education

2. Cardio-respiratory System

3. Circulation in the Heart

4. The system! Words to know!
Blood vessels
Arteries = vessels that carry blood away from the heart
Veins = vessels that carry blood to the heart
Capillaries = very small blood vessels that distribute blood to all parts of the body
Lungs
Alveoli = tiny air sacs in the lungs through whose walls gases such as oxygen and carbon dioxide diffuse in and out of the blood
Fahey/Insel/Roth, Fit & Well: Core Concepts and Labs in Physical Fitness and Wellness, Chapter 3
© McGraw-Hill Higher Education

5. Acting out! In groups of 4/5
Set up your group so you can act out the way your blood runs through your body.
Note the different steps in book on page 59
I must see the difference between O2 blood and CO2 blood
Follow the blood: heart > lungs > rest of body
Fahey/Insel/Roth, Fit & Well: Core Concepts and Labs in Physical Fitness and Wellness, Chapter 3
© McGraw-Hill Higher Education

6. Cardiorespiratory System
The heart
Right side pumps blood in the pulmonary circulation (to the lungs)
Left side pumps blood in the systemic circulation (to the rest of the body)
Blood pressure (120/80)
Systole—contraction of the heart
Diastole—relaxation of the heart
Fahey/Insel/Roth, Fit & Well: Core Concepts and Labs in Physical Fitness and Wellness, Chapter 3
© McGraw-Hill Higher Education

7. Cardiorespiratory System
AT REST
Heart rate: 50–90 beats/minute
Breathing rate: 12–20 breaths/minute
Blood pressure: 110/70
Cardiac output: 5 quarts/minute
Blood distributed to muscles: 15–20%
DURING EXERCISE
Heart rate: 170–210 beats/minute
Breathing rate: 40–60 breaths/minute
Blood pressure: 175/65
Cardiac output: 20 quarts/minute
Blood distributed to muscles: 85–90%
Fahey/Insel/Roth, Fit & Well: Core Concepts and Labs in Physical Fitness and Wellness, Chapter 3
© McGraw-Hill Higher Education

8. Monitoring Your Heart Rate
Carotid artery in the neck
Radial artery in the wrist
Fahey/Insel/Roth, Fit & Well: Core Concepts and Labs in Physical Fitness and Wellness, Chapter 3
© McGraw-Hill Higher Education

9. Calculate your resting heart rate and training zone!
Count beats for 10 seconds and multiply the result by 6 to get rate in beats per minute
____ beats x 6 = ____bpm
Maximum HR: 220 – (age) = _____ HR zone: 65 %: Max x .65 = ___ bpm 90 %: Max x .9 = ___ bpm Target: from ___ to ____
Fahey/Insel/Roth, Fit & Well: Core Concepts and Labs in Physical Fitness and Wellness, Chapter 3
© McGraw-Hill Higher Education

10. Energy Production
Metabolism—the sum of all chemical processes necessary to maintain the body
Energy from food
Carbs, fats and protein
Broken down into glucose
Stored as glycogen
ATP (adenosine triphosphate): The energy “currency” of cells
Fahey/Insel/Roth, Fit & Well: Core Concepts and Labs in Physical Fitness and Wellness, Chapter 3
© McGraw-Hill Higher Education

11. Three Energy Systems

12. Three Energy Systems

13. Benefits of Cardio-respiratory Endurance Exercise
Improved cardio-respiratory function
Improved cellular metabolism
Reduced risk of chronic disease: (Cardiovascular disease, Cancer, Type 2 diabetes, Osteoporosis, Deaths from all causes)
Better control of body fat
Improved immune function
Improved psychological and emotional well- being

14. Effects of Cardiorespiratory Endurance

15. Assessing Fitness Next class! Tests: 1 mile walk (CR)
Curl-up/push-up (ME)
Sit and reach (F)
Body composition
Leg Press
Fahey/Insel/Roth, Fit & Well: Core Concepts and Labs in Physical Fitness and Wellness, Chapter 3
© McGraw-Hill Higher Education