sit to stand

Question 1

does STS require a lot of muscle power?

Answer 1

yes it requires concentric power from lower limb extensors

Question 2

what are the phases of sit to stand?

Answer 2

-flexion momentum phase: initiation of forward trunk lean (horizontal)
- momentum transfer phase: trunk moves vertically, lift ofd
-extension phase: knees extend, from maximum DF
-stabilisation phase

Question 3

what joints & movement does forward trunk lean come from?

Answer 3

-hip flexion
-lumbar flexion
-thoracic extension

Question 4

what are requirements for sit to stand?

Answer 4

-sitting balance
-trunk control: upper/ lower
-ankle DF
-knee and hip flexion (ideally >90 degrees)
-full knee and hip extension NB
-muscle control and power

Question 5

what things influence a sit to stand?

Answer 5

-foot position
-base of support
-chair height
-trunk inclination
-coronal and transverse plane hip position (eg IR or ER or abduction etc)
-use of arms (can be a useful aid etc)
-symmetry
-speed of performance

Question 6

what are some examples of modifications of a sit to stand?

Answer 6

-loss of flexion momentum phase
-seat height
-foot position
-arm rests eg perform without arm rests

Question 7

what are the effects of having a higher chair?

Answer 7

it can result in lower moments at the knee and hip up by up to 50%

Question 8

what are examples of outcome measures for sit to stand?

Answer 8

-timed sit to stand (for very weak people)
-5x STS
-1 minute STS
-timed up and go

Question 9

can a STS be used as an intervention?

Answer 9

it improved the time taken for the sit-stand and lateral symmetry
-can also improve balance in neurological populations

Question 10

what are the parameters for STS for strengthening ?

Answer 10

-height
-reps/sets
-foot position for gluteal recruitment