Lesson 2 - Developing Cardiorespiratory Fitness Lifetime...

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Developing Cardiorespiratory Fitness Lifetime Fitness Lesson 2, Chapter 4 I. The Importance of Cardiorespiratory Fitness A. Cardiorespiratory system transports and supplies oxygen to all parts of the body B. Basic life support of the body C. The more fit you are the more efficiently the CR system supplies oxygen II. How Exercise Affects the Heart A. Increased heart rate B. Increased stroke volume a. Stroke volume – the volume of blood being pumped out of the heart with each beat C. Increased cardiac output a. Cardiac output – indicates how much blood the heart is capable of pumping in exactly 1 minute III. Fitness and Aerobic Capacity A. Aerobic capacity is the greatest rate at which oxygen can be taken in and used during exercise a. The more active you are, the higher your aerobic capacity IV. What is the difference between aerobic vs. anaerobic activities? A. Aerobic Activities a. Use oxygen b. Prolonged activity B. Anaerobic Activities a. Doesn’t involve oxygen b. Bursts of energy V. What determines how efficiently the body is using oxygen?
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