Movements of inexperienced movers:
- inefficient
- jerky
- separate, discrete movements instead of whole movements
- optimize one aspect of the movement (eg. balance) at the expense of another (eg. speed) to increase likelihood of success
Principles of _____ and _____ act on all movements and movers.
- motion
- stability
As movers become more proficient at skills, they use principles….
to their advantage
Certain physical laws of motion _____ your movements. Give an example.
- limit
- gravity
How do individual constraints/characteristics of the performer influence the movement patter?
- muscles have particular shapes and sizes
- nervous system coordinates muscle contractions
To develop skills, children and adults must learn to use ______ _____ to optimize performance.
movement patterns
How does growth complicate using movement patterns?
alters proportions
Movement pattern can change if any one of the _____ change.
constraints
Changing bodies =
- changing individual constraints
- individuals must recalibrate the interactions between individual and environmental constraints
As kids grow, more _____ _____ become possible.
movement patterns
_____ or _____ can change individual constraints for either short or long periods.
- injury
- disability
When injury or disability occurs, we need to relearn how to use ______ of ______ given their unique body _____ and _____.
- mechanics of movement
- structure
- function
With _____ and ____ (maybe ______), new movement patterns may emerge that provide for better performance.
- time
- experience
- technology
Newton’s first law of motion
- To move either yourself or objects, you must produce force
- Will not move until force is applied
- An object at rest stays at rest
- An object in motion stays in motion until acted on by a force
Newton’s second law of motion:
- F=ma
- Acceleration of a person or object is proportional to the force applied to it
- Acceleration is inversely proportional to its mass
We can use Newton’s laws to understand how to …
maximize performance
There is a relationship between _____ applied and the _____ over which you apply it.
- force
- distance
We can improve performance by applying _____ over a greater _____.
- force
- distance
Give an example of force distance relationship.
- can throw farther by moving legs
- doing this can reduce compromises to balance (child)
How can we maximize performance with rotary/angular distance?
increasing body ROM = increased rotary distance over force applied = maximized performance
In most laws, there is a ______ level for each factor. Exceeding these can lead to….
- optimum
- decrease in performance
Newton’s third law of motion:
- For every action there’s a equal and opposite reaction
- Every force you exert on an object, the object exerts an equal force back on you in the opposite direction
Example of Newton’s third law of motion:
- walking
- pushing down on the floor and the floor pushes back
When walking, adults tend to push _____ to propel them ___ and _____. Toddlers often push _____ instead of _____. Why?
- backwards
- up and forward
- downwards
- backwards
- keeps their balance, forward progression is slow
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Chapter 180
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CP 160
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Lecture 139
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Lecture 241
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Lecture 317
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Lecture 441
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Lecture 581
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Lecture 663
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WHO Child Growth25
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Chapter 264
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Chapter 364
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Chapter 4152
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Chapter 5205
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Chapter 691
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Chapter 7159
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Chapter 854
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Chapter 9 Book110
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Speech and Language Development91
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Chapter 15: Lecture38
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Chapter 10: Book127
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Exercise for Idiopathic Scoliosis83
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Chapter 9 Lecture52
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Chapter 10 Lecture112
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Chapter 11 Lecture54
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Chapter 16 Lecture67
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Youth Resistance Training49
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Chapter 18 Lecture28
