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- 1. Multiple Choice
Define Balance & Stability
An objects ability to maintain a stable position
The area around the contact points with the ground. The larger it is, the greater stability a person has.
Base of support contributing factors
The point at which all parts of an object are equally balanced
- 2. Multiple Choice
A body is in balance and stability when:
Centre of gravity is low
Line of gravity falls within base of support
Centre of gravity is over the base of support
All of centre of gravity, line of gravity and base of support are in one line vertically
- 3. Multiple Choice
Are these people most likely to be stable, unstable, balanced or unbalanced?
Stable
Unstable
Balanced
Unbalanced
- 4. Multiple Choice
Define Base of Support
An objects ability to maintain a stable position
The area around the contact points with the ground. The larger it is, the greater stability a person has.
Base of support contributing factors
The point at which all parts of an object are equally balanced
- 5. Multiple Choice
Define Centre of Gravity
An objects ability to maintain a stable position
The area around the contact points with the ground. The larger it is, the greater stability a person has.
The point at which all parts of an object are equally balanced
Base of support contributing factors
- 6. Fill in the Blank
What are the three factors in stability and balance? (use all lower case letters)
- 7. Multiple Choice
Why is stability and balance so important in sumo wrestling?
Because you are simultaneously trying to execute a skill (pushing) while your opponent tries to push you out of stability
Because the wrestlers are big and can easily knock you out of the ring with their low centre of gravity
Because the wrestlers are big, have a naturally high centre of gravity so need to adjust by having a wider base of support and lower centre of gravity
- 8. Multiple Choice
When a human stands in the anatomical position, where does centre of gravity naturally end up?
Belly button
Groin
Chest
Between knees
- 9. Multiple Choice
Is this person likely to be stable, unstable, balanced or unbalanced? Why?
Stable, because he is in the middle of a dynamic movement and his LoG is over his BoS
Unstable, because he is in the middle of a dynamic movement and his LoG is very unlikely to be over his BoS
Balanced, because he is in a static movement and his LoG is likely to be over his BoS
Unbalanced, because he is in a static movement and his LoG is very unlikely to be over his BoS
- 10. Multiple Choice
Why do we place our arms out for counterbalance when we are crossing a narrow beam/rope/platform?
The larger leg muscles are unable to be used so we use the arms for leverage to bring our line of gravity back inside base of support
To make our body area wider so the base of support is wider and line of gravity falls within it
To make our body area wider so centre of gravity naturally becomes lower and the body is more stable
To utilise force summation to use larger muscles to bring us back into balance
- 11. Multiple Choice
How does a person become more stable in relation to my COG?
The higher the COG the more stable you are
If the COG is in the centre of the BOS you are stable
The lower the COG, the more stable you are
- 12. Multiple Choice
Define Line of Gravity
An objects ability to maintain a stable position
The area around the contact points with the ground. The larger it is, the greater stability a person has.
The vertical line that passes through the centre of gravity to the ground.
The point at which all parts of an object are equally balanced
- 13. Multiple Choice
Who is the most stable sports player ?
- 14. Multiple Choice
Who is the least stable sports player ?
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