Muscular Strength and Endurance Quiz
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Questions and Answers

What is the general difference between Type I and Type II muscle fibers?

  • Type I fibers are oxidative, while Type II fibers are glycolytic
  • Type I fibers are glycolytic, while Type II fibers are oxidative
  • Type I fibers are slow-twitch, while Type II fibers are fast-twitch (correct)
  • Type I fibers are fast-twitch, while Type II fibers are slow-twitch

    • What is the definition of power in the context of muscles?

  • Muscles ability to exert force
  • Muscles ability to continue to perform successive exertions or many reps
  • Muscles ability to maintain Bone mass and Glucose tolerance
  • Muscles ability to exert force per unit of time (correct)

    • What is the general function of isometric muscle action?

  • Involving repeated rapid stretching and contracting of muscles to increase muscle power
  • Muscle lengthens as it contracts
  • Maintaining a constant muscle length without joint movement (correct)
  • Muscle shortens as it contracts

    • What is the correct definition of endurance in the context of muscles?

    <p>Muscles ability to continue to perform successive exertions or many reps</p> Signup and view all the answers

    What is the correct definition of strength in the context of muscles?

    <p>Muscles ability to exert force</p> Signup and view all the answers

    What is the correct definition of power in the context of muscles?

    <p>Muscles ability to exert force per unit of time</p> Signup and view all the answers

    What kcal/kg and kcal/lb does muscle burn and what does that mean?

    <p>Muscle burns approximately 5-7 kcal/kg or 2-3 kcal/lb, signifying the energy expenditure of muscle tissue</p> Signup and view all the answers

    What is the general function of eccentric muscle action?

    <p>Muscle lengthens as it exerts tension</p> Signup and view all the answers

    What dictates the type of muscle fiber and how are they recruited?

    <p>Type of motor unit dictates the type of muscle fiber; recruited smallest to largest</p> Signup and view all the answers

    What is the correct definition of endurance in the context of muscles?

    <p>Muscles ability to continue to perform successive exertions or many reps</p> Signup and view all the answers

    Study Notes

    Muscle Fibers

    • Type I muscle fibers are designed for low-intensity, long-duration activities, and are efficient for endurance activities.
    • Type II muscle fibers are designed for high-intensity, short-duration activities, and are better suited for strength and power activities.

    Muscle Power

    • Power is the rate at which muscles generate force, and is typically measured in watts (W).

    Isometric Muscle Action

    • Isometric muscle action occurs when a muscle contracts without moving the joint, resulting in no change in muscle length.

    Muscle Endurance

    • Endurance refers to the ability of a muscle to sustain a contraction over a prolonged period of time.

    Muscle Strength

    • Strength refers to the maximum amount of force a muscle can generate in a single contraction.

    Muscle Power (Reiterated)

    • Power is the rate at which muscles generate force, and is a combination of strength and speed.

    Muscle Energy Expenditure

    • Muscle burns approximately 1.3 kcal/kg (or 0.59 kcal/lb) of body weight per minute, which means that the more muscle mass an individual has, the higher their resting energy expenditure.

    Eccentric Muscle Action

    • Eccentric muscle action occurs when a muscle contracts while lengthening, often used to slow down or control movements.

    Muscle Fiber Recruitment

    • The type of muscle fiber recruited is dictated by the intensity and duration of the activity, with Type I fibers being recruited first for low-intensity activities, and Type II fibers being recruited for high-intensity activities.
    • The recruitment of muscle fibers is also influenced by factors such as muscle fatigue, muscle damage, and neural factors.

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    Description

    Test your knowledge of the benefits of muscular strength and endurance, as well as the physiological effects of muscle action and metabolism. Explore topics such as bone mass, glucose tolerance, musculotendinous integrity, and daily living activities. Discover the caloric expenditure of muscle and the types and functions of muscle contractions.

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