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Influences on Cardiorespiratory Endurance: Measurement and Factors

This lesson explores the influences on cardiorespiratory endurance, defining it as the ability to supply and utilize oxygen during vigorous exercise. We delve into how maximal oxygen consumption (VO2max) is measured, indicating aerobic fitness. Key factors affecting this endurance include age, heredity, gender differences, body composition, and muscle fiber types. The difference between aerobic and anaerobic activities is also discussed, highlighting the benefits of aerobic fitness, anaerobic strength, and interval training for optimizing fitness levels.

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Influences on Cardiorespiratory Endurance: Measurement and Factors

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Presentation Transcript

  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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