Ch 1 exam finish

  1. The 3 different muscle type fibers
    • Type I
    • Type IIa
    • Type IIx
  2. Type I Muscle fiber
    Slow twitch / Slow oxidation (SO)
  3. Type II Muscle fiber
    Fast twitch / More develop SR, more CA2+
  4. Type IIa muscle fiber
    • FOG
    • Fast oxidation glycolytic
  5. Type IIx Muscle Fiber
    • FG
    • Fast Glycolytic
  6. Difference between Type I and Type II
    • Type II muscle fibers motor units are larger than Type I
    • Type II muscle fibers motor units have more muscle fiber to contract than Type I
  7. Type I & II
    Muscles fiber Type I & II are similar in both arms and legs
  8. How does Skeletal Muscle fiber type affect activity performance ?
    • Type I have high aerobic endurance for low intensity
    • Type II Anaerobic activity
    • Type IIa High intensity exercise
    • Type IIx force demand of muscle
  9. How to determine the fiber type make ups
    • Endurance training
    • Strength training
    • Muscular inactivity
    • Aging may shift fiber distribution
  10. What determines the fiber type make up of an individual?
    • The type of event and sports
    • genetics
  11. Does skeletal fiber type vary from person to person and from muscle to muscle?
    Yes, muscles are different from person to person
  12. Which fiber type display greater power ?
    Type IIx
  13. Muscular Power & Formula
    Capacity of muscles to generate force during a fast contraction

    Force x Distance/Time
  14. Muscular Force
    Generated force during contraction
  15. Muscular Power
    Generate force during a fast contraction
  16. Muscular Endurance
    Sustained repeated contraction or a single contraction
  17. The 3 types of muscle action
    • Concentric
    • Isometric
    • Eccentric
  18. Concentric
    Force develop while muscle is shorting
  19. Isometric
    Force generate but the length of the muscle is unchanged
  20. Eccentric
    force generated while muscles lengthen
  21. The factors of Force generation
    • # of motor units activated
    • Nature of Neutral Simulation
    • Muscle size
    • Muscles length
    • Joint angle
    • Speed of muscle action
    • Type of muscle action
  22. How the Nervous system causes gradation in contractions?
    • Recruitment
    • Rate Coding
  23. Recruitment
    Varying the # of motor units activated
  24. Rate Coding
    Increasing or decreasing of firing motor units
  25. Motor unit Recriutment
    Motor units are activated basis on of a fixed order
  26. Nature of Nueral Stimulation
    Rate Codeing
  27. Length of Muscle
    Muscle strecthed to far Little overlaping
Card Set
Ch 1 exam finish
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