L12 Postural Control Flashcards
static postural control
static BOS and individual
dynamic postural control
indv moving on static BOS or BOS moving while indv static
four states of postural control
static steady state: sit or stand
dynamic steady state: steady position while walking
proactive/anticipatory balance: preparing for a predicted change in balance
reactive balance: responding to an unexpected perturbation
Can you train all types of postural control together?
No, all 4 are distinct and need to be assessed and trained as they have little transference between them
elements of postural control
biomechanical alignment -
sensory feedback (proprioception, tactile, etc)
muscular activation (EMG if muscles are activating appropriatelY)
sensory aspects of postural control
somatosensory: proprioception, kinesthesia, tactile
vestibular
vision
all three need to integrate for active and dynamic balance
postural control and visual system
important for steady state posture control when first learning, then other systems kick in and we can balance with our eyes closed
steering system in walking
vestibular system and posture control
provides CNS with information on head position/velocity with respect to gravity and inertia
somatosensory and posture control
merkel: light touch
pacinian: pressure and vibration
meissner: fine touch
ruffini: stretch and movement
proprioception/kinesthesia
joint position/receptors
sense force and weight
muscle spindle detects what
movement of muscle, speed and length
gogli tendon organ detects what
force or weight of object, creation of force
importance of cervical spine in posture control
cervical proprioception protects head
afferents calculate distance between eyes and arms without looking
motor and sensory connection
sensation drives our motor function as a reaction to what we detect
CNS judges senosry info to create muscle response that is organized, on time, spatially correct, correct force
nervous system response to perturbations
organized response, CNS has preplanned strategies for response to perturbations and will react the same to the same perturbation
