Coordination

Question 1

Define coordination

Answer 1

The organisation of different elements of a complex body or activity so as to enable them to work together effectively

Involve bringing together the degree of freedom at each level into proper relations

Question 2

Explain anticipatory postural adjustments

Answer 2

Leg muscles first to brace yourself

Question 3

Explain anticipatory muscle activation

Answer 3

Proximal to distal

Closest to the centre of the body not to the stimulus

Stabilising

When pushing down on the table, proximal distal disappears as joints were already stabilised
Loose posture adjustments (when arm already in table)

Question 4

Explain single joint movements

Answer 4

Picture

At maximum velocity, acceleration drops to 0 then see negative acceleration

Question 5

Explain triphasic movement patterns

Answer 5

Agonist
Antagonist to slow it down
Combination of the two

Question 6

How does triphasic activity change in different situations

Answer 6

Lots of agonist
Less antagonist
Less need so slow down

Question 7

Explain muscle models

Answer 7

Determine release windows
Vary when muscles switch on

Very small release windows
Timing

Question 8

What is bimanual coordination

Answer 8

Bimanual coordination means using both hands together in a smooth and controlled way.

Question 9

Link fitts law

Answer 9

Picking up an item which is further away has a greater index of difficulty

Have to move further = greater movement time

Picking up 2 pens at same time = greater ID
Slow down
= interference

Question 10

Explain trajectory’s and bimanual coordination

Answer 10

Both hands usually peak in height at same time then pick up the pens