yr 11 hpe biomechanics. biomechanics is the study of how living things move efficiency of movement...
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Yr 11 HPE
BIOMECHANICS
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Biomechanics is important in skill learning because it allows us to
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Skill phases
Can be defined as “the breaking down of a movement into specific meaningful phrases” (Amezdroz et al, 2004).
This means that a movement consists of a series of phases that are quite different in terms of techniques and the underlying principles of biomechanics (Amezdroz et al, 2004).
Example: cartwheel has 5 different phases
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Balance and stability
If you do not fall over you are in equilibrium and therefore balanced.
Balance is the ability to maintain the body in equilibrium while static (stationary) or dynamic (moving).
When you are stable you are balanced and stability depends on
• Base of support (BOS)and• Centre of gravity (COG)
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Balance and stability
Base of support (BOS)The area between the points in contact with the
ground. Determines the level of balanceEg. One leg v 2 legs; close v wide stance, headstand v
handstand
Centre of gravity (COG) [or centre of weight ] The point at which the body’s weight is balanced.Can change position in relation to the body mass which
means that it can be outside the body (pg 183)
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Stability is the measure of the body’s reluctance to move out of equilibrium
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Motion
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Angular motion is when the body turns around its axis of rotation
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Inertia can be defined as an objects responsiveness or its resistance to attempts to change its motion (Amezdroz et al, 2004).
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Rotational Inertia
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Momentum