how do biomechanical principles influence movement?

Question 1

what are the two types of balance?

Answer 1

• static –> body is at rest
• dynamic –> body is moving

Question 2

why is stability necessary?

Answer 2

to remain in a constant position, even when forces are being exerted against you to try and move away

Question 3

what affects balance?

Answer 3

• how wide your base of support is
• how heavy you are
• the position of your centre of gravity
• the line of gravity through your body

Question 4

what is centre of gravity?

Answer 4

• the point around which an object is completely balanced
• depends on how body parts are arranged; position of arms and legs relative to the trunk

Question 5

what is the line of gravity?

Answer 5

imaginary vertical line passing through COG and extending to the ground, indicating direction that gravity is acting on the body

Question 6

how does the line of gravity affect movement and performance?

Answer 6

• movement occurs when LOG changes relative to BOS
• movement results in momentary state of imbalance being created, causing body to move in direction of imbalance
• less force required to initiate desired movement

Question 7

what is base of support?

Answer 7

region bounded by limbs in contact with a surface applying a reactive force against the force of the body
- wide base = stability
- narrow base = instability