Postural Stability - unit 3 Flashcards
posture
position of the body
what does posture do
keeps body upright, joints are loaded equally
balance
ability to maintain COM within base of support (BOS)
stability
resistance to toppling
postural stability
area of study that assesses a person’s balance
how does poor posture impact motor function
can alter length-tensions relationship which makes muscles weaker and less efficient for movement, also can cause spinal cord to be damaged
regional interdependence
multiple regions and systems of the body are related
what is shoulder impingement an example of
regional interdependence
what is breathing with arm reach and example of
regional interdependence
what is the clinical implication of regional interdependence
an intervention of one area of the body may impact a seemingly unrelated area
what are the 3 characteristics of normal spine curvature in regard to cervical, thoracic, and lumbar areas of spine
cervical lordosis, thoracic kyphosis, and lumbar lordosis
lordosis
inward curvature toward front of the body
kyphosis
outward curvature toward back of body
what are the 2 ways that poor posture can change a muscle in regard to the length tension relationship
elongate or shorten muscles
scoliosis
sideway curvature of spine, uneven shoulders, one hip is higher, rib cage protruding on one side
adverse effects of scoliosis
pain in muscles/joints along ribs, spine, and shoulder
effects of scoliosis in severe cases
reduced lung capacity
do most scoliosis cases require treatment
no, most are mild
how do assistive devices improve balance
they increase the base of support, so it’s easier to keep COM within it
3 types of balance strategy
ankle, hip, stepping
when do we use ankle balance strategy
perturbation is slow and low amplitude
how are muscles recruited for balance strategies (like which muscles are recruited first)
distal to proximal (closer to ankle first)
who is most likely to use the ankle balance strategy
healthy and young people
when do we use the hip balance strategy
perturbation is fast or large amplitude, surface is unstable or smaller than feet
