integrative care Flashcards
(88 cards)
What are the two components of postural control?
postural orientation and postural stability
What is postural orientation?
ability to maintain an appropriate relationship between different body segments and between the body and the environment for a task
What is postural stability?
the ability to control the center of mass in relationship to the base of support
What is the center of mass?
the point at the center of the total body mass
What is the center of gravity?
the vertical projection of the center of mass
What is the base of support
the area enclosed by the body in contact with the surface
what happens as the COM shifts upward?
object becomes more top heavy, tendency to be overthrown increases
how will the center of mass shift with a left unilateral AK amputee
COM will shift up and right
what is center of pressure?
distribution of total forces applied to the support surface; at static equilibrium COP directly under COM
what is static balance
the ability to maintain COG within the supporting base while standing or sitting
what is dynamic balance
maintaining an upright position while COG and BOS are moving and COG is outside BOS (ex walking)
what is functional balance
the ability to preform daily movement tasks requiring balance and involves static and dynamic balance
what are stability limits
refer to the boundaries within which the body can maintain stability without changing base of support
what creates stability limits
interactions between position and velocity of COM
what systems are involved in balance
vestibular, visual, tactile, proprioception
how can you test anticipatory postural control in the clinic
ask them to make typical movements like sit to stand, push up on toes. etc.
how can you test reactive postural control in the clinic
have patient lean into hands, remove them and watch how they recover
Where is the balance control center in the brain
cerebellum
what is absolute effect?
mean difference; reported with units
What is a within group change?
comparing pre to post in the same group
What is between group change?
comparing the mean change for group 1 and group 2
what is standardized effect
compares magnitude of change across different outcome measures - NO UNITS (also expressed at g)
statistical approach vs effect size approach
statistical approach reported p values and is useful in research; effect size reports mean changes and confidence intervals; important in applying research
What components are used to calculate a confidence interval
standard deviation; sample size; how confident you want to be; mean effect