Section outline

  • WELCOME to 9W1PEH!  

    Ms Grant - agrant@mhjc.school.nz

    Learning Intention:

    We are learning different rules, techniques, and physiology functions, that relate to sport in order to understand how movement strategies can be acquired and then applied to a variety of sports.

     

    Success Criteria:

    		  

    • Identify different movement strategies that are found in multiple sports (invasion games) 

    • List the key muscles/bones of the human body

    • Describe 3 movement strategies that can be used in invasion games

    • Describe the relationship between bones and muscles in relation to human movement 

     


    • Explain the importance of movement strategies and why knowledge of them is important to sporting success

    • Demonstrate these movement strategies across different invasion games

     

    • Evaluate your own ability to use movement strategies in different invasion games.

     


    Term 1 CONTEXT - History's Mysteries . . . 

    MONDAY - Health/Theory - make sure you have your PEH book!


    Celebration Assembly is during our session today.

    THURSDAY - Health/Theory

    In class work. This will be our final in-class session of the term. This learning will be important for you assessment that will be introduced at the beginning of Term 2.

    Recap - we have learned the key bones and muscles in the body. Then the types of joints, joint movements, and some anatomical terms. We then learned the structure of a muscle and the two types of muscle fibres. Today we will learn how muscles 'fire/contract' to create movement.


    Sliding Filament Theory - this is the contraction that occurs which enables our muscles (and us) to move.

    Basic explanation

    • inside each muscle fiber are myofibrils which have even smaller things called actin and myosin filaments (see drawing on board)
    • actin and myosin slide in and out of each other - this causes muscle contraction!


    How this happens . . .

    1. Nerve impulse arrives in the muscle fibre and releases calcium.
    2. Calcium causes actin and myosin to join (form a bridge).
    3. ATP breaksdown now releasing energy. This energy enables myosin to pull actin - this shortens the muscle which is contraction.
    4. This process continues to enable a muscle to keep contracting.
    5. A muscle can keep contracting as long as their is ATP


    Advanced? So why do slow twitch fibers need oxygen?

    The sliding filament theory uses ATP which is stored in muscles. Fast Twitch Fibers use this energy source. Slow Twitch Fibers need to contract for long periods of time, so they use oxygen to break down stored glucose which releases more ATP for muscle contraction to continue. This glucose comes and the body's fat and protein stores.



    This website gives you a more comprehensive explanation of the sliding filament theory.


    FRIDAY - Practical - Gym 

    We will have a fun final practical session in the gym. Make sure you have your PE gear.