Neural control of posture

6 important questions on Neural control of posture

What are the three types for forces?

  1. Gravity
  2. Ground reaction force
  3. External forces


All the forces and moment should be in equilibrium to be in balance.

What are the three mechanisms for postural control?

  1. Move the COP
  2. Move the COM
  3. Change the Base of support

Describe the 'move the COP mechanisms'

With this strategy you move the COP constantly to control the COM. Theoretically the COP can be moves withing the limits of the base of support. This is the area within the points of contact. It can be influenced by footwear, walking aid and arm-hand contact. The effective and comfortable base of support is much smaller than the actual limits of the base of support.
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Describe the ankle strategy in the sagittal plane

Falling to the front: activation of dorsal muscles (calf, hamstrings and paraspinal muscles)
Falling to the back: activation of ventral muscle (tibialis anterior, quadriceps, abdominal muscles)

Someone could only perform the ankle strategy if:
- the leg muscle are strong enough
- the ankle mobility is good
- and there is a large base of support

Describe the 'move the COM mechanisms'

This mechanisms is all about rotation of body segments around the COM.

What sensory systems are used for balance control?

  1. Vision
  2. Vestibulum
  3. Somatosensation

The question on the page originate from the summary of the following study material:

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