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Chapter 7

Chapter 7. Lesson 3 & 4. Lesson 3 Influences on Cardiorespiratory Endurance. How is cardiorespiratory endurance measured? Maximal oxygen consumption or VO2max The largest amount of oxygen your body is able to process during strenuous aerobic exercise.

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Chapter 7

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  1. Chapter 7 Lesson 3 & 4

  2. Lesson 3Influences on Cardiorespiratory Endurance How is cardiorespiratory endurance measured? • Maximal oxygen consumption or VO2max • The largest amount of oxygen your body is able to process during strenuous aerobic exercise. • Measures the amount of oxygen in milliliters per kilogram of body weight per minute. • The more aerobically fit you are, the higher your VO2max

  3. What factors influence cardiorespiratory endurance? • Age • Heredity • Gender – males have higher hemoglobin and less body fat • Slow-twitch fibers (red fibers) • Muscle fibers that contract at a slow rate • Better oxygen supply • Long distance running • Fast-twitch fibers (white fibers) • Contract rapidly allowing for greater muscle strength • Powerful, but little oxygen supply • Sprints, jumps, explosive movements

  4. Body Composition • More body fat, reduces aerobic capacity • Need more muscle/less fat – burn more calories • Level of Conditioning • If your are not currently active, start! • Benefits of Cardiorespiratory Fitness • Figure 7.5 pg. 210 • Heart & lungs, Blood and Arteries, Muscle Cells and bones, Body composition, Emotions, Image & Lifestyle

  5. Make the most of what you have • Start young • Stay active • Pay attention to fitness factors you can control • Weight • Body composition • Level of conditioning • Make your body work for you, rather than against you • Aerobic exercise conditions your muscles & burns fat, helping control blood fat levels.

  6. Lesson 4Aerobic vs. Anaerobic Physical Activities • Anaerobic activity • Activity that requires high levels of energy and is done for only a few seconds or minutes at a high level of intensity. Leads to: • Anaerobic fitness • Higher levels of muscular strength, muscular endurance, and flexibility • Anaerobic Activities • Running up stairs, 40 yard sprint, fast break in basketball.

  7. Interval Training • A program in which high-intensity physical activities alternate with low-intensity recovery bouts for several minutes at a time Advantages: • Work at higher intensities • Burn more calories • Increases ability to work at higher intensities • Improves skill-related and health related fitness simultaneously

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