STS Flashcards

1
Q

define sit to stand

A

moving body mass forward from large BOS to small c ext of LE to raise body over feet

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2
Q

define sitting down

A

moving body mass down from small BOS to large c UE flexing forward and LE flexing to control descend

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3
Q

true or false

sitting down is the reverse of standing up

A

false

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4
Q

true or false

in sit to stand and sitting down HKA angular displacements are similar

A

true

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5
Q

muscle activity during sit to stand

A

iliopsoas - initiates flexion of trunk

major ext force during thigh off - concentric of quads

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6
Q

muscle activity during sitting down

A

eccentric control of extensors at HKA to control descent

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7
Q

other considerations during sit to stand

A

momentum

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8
Q

other considerations during sitting down

A

longer duration d/t lack of visual input

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9
Q

phases of STS

A

pre-extension phase and extension phase

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10
Q

discuss pre-extension phase of STS

A

feet moved post to knee

HAT flexion at hips

generation of horizontal linear momentum

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11
Q

discuss extension phase of STS

A

conversion of horizontal linear momentum to vertical momentum

HKA ext - starts at knees

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12
Q

critical components of STS

A

foot placed back ng 10 cm and 75° dflexion

flexion of extended HAT at hips

knee hip and ankle ext - at least 3/5 MMT

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13
Q

mechanical requirements of STS

A

generation of horizontal and vertical momentum

generating and sustaining LE forces

postural stab at thighs-off

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14
Q

discuss significance of foot placement in STS

A

dictates:
- the distance body has to move forward to pos COM over feet
- amount of muscle force of HKA

BOBATH: standing up 1 foot in front = inc loading on post foot

MRP: sabay

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15
Q

discuss significance of timing and trunk rotation in STS

A

momentum from HAT is a major contributor to elicit proper ext of LE

inc hip flexion velocity or more horizontal momentum = dec force for LE ext

not too fast and slow: 1-2 secs dapat

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16
Q

discuss significance of chair in STS

A

higher = easier to stand

dec arm rest to make sure LE contracts

17
Q

discuss significance of UE limbs for balance and propulsion in STS

A

BOBATH AND BRUNSS: RIP = hard to translate to vertical momentum and no supp

MRP: hands at lap lang

18
Q

problems in STS post-stroke

A

inability to stand indep

absent/insuff foot placement backward

dec projection of body forward in pre-extension phase

uncontrolled descent during sit

19
Q

causes of inability to stand indep post-stroke

A

LE muscle weakness and incoordination

diff timing and generation of LE force - unable to sustain force, burts only

lack of balance and stab

20
Q

causes of inability to absent/insuff foot placement backward post-stroke

A

weak hams and dflexors

tight soleus

sensory prob

21
Q

causes of dec projection of body forward in pre-extension phase in post-stroke

A

inadequate foot back

inability to stab paretic limb

assym WB on feet

flexion at spine

moving very slow

fear of falling

wide feet

22
Q

dec projection of uncontrolled descent in pre-extension phase

A

nag ccompensate UE

LE muscle weakness and incoordination

poor balance

sensory problems

23
Q

goals of rehab in training STS

A

prevent soft tissue shortening

inc LE activation, strength and coordination

promote safe, efficient and indep STS