How are force plates set up?

How are force plates set up?

Answer: Rigid platform with strain gauge or piezoelectric transducers

Can force plates measure COP?

Can force plates measure COP?

Answer: Yes

What do force plates measure?

What do force plates measure?

Answer: Force plates measure ad quantify GRF vectors in A-P, M-L vertical directions to assess balance, gait

How does a force plate work?

How does a force plate work?

Answer: Floor reacts with equal intensity and opposite direction of forces produced by the weight bearing limb (newton's 3rd law)

How is an electrogoniometer set up?

How is an electrogoniometer set up?

Answer: 2 end blocks connected by flexible cable containing optical fibers (mounted where skin moves least)

How may planes can electrogoniometers measure movement in?

How may planes can electrogoniometers measure movement in?

Answer: 2 planes

What do electrogoniometers measure?

What do electrogoniometers measure?

Answer: Dynamic joint displacement of wrist, neck, elbow , hip, knee, back (dynamic AROM)

How many readings should you take when using the JAMAR?

How many readings should you take when using the JAMAR?

Answer: 3 readings per hand

What are your instructions to your pt on how to begin the test (using the JAMAR)

What are your instructions to your pt on how to begin the test (using the JAMAR)

Answer: Ask pt to squeeze as long and hard as possible

What can you do as the therapist to negate the effects of gravity when using the JAMAR?

What can you do as the therapist to negate the effects of gravity when using the JAMAR?

Answer: Rest the base of the JAMAR on my (therapist's) hand

After you seat the pt, what should you do as the therapist?

After you seat the pt, what should you do as the therapist?

Answer: Demonstrate how to use the JAMAR and fit the instrument to pt's comfortable grip

How do you prep the pt when using JAMAR?

How do you prep the pt when using JAMAR?

Answer: Pt seated in chair, elbow flexed to 90 degrees, forearm supported with wrist over edge in neutral position (start with right hand)

What are some disadvantages to the JAMAR?

What are some disadvantages to the JAMAR?

Answer:

- Heavy
- Requres 3-4lbs of force for indicator to move (not appropriate for frail)
- Greater error at lower readings
- No standardized protocol
- Positions 1 and 5 are least reliable

Which hand is stronger?

Which hand is stronger?

Answer: Dominant hand can be 10% stronger

What has low grip strength been associated with?

What has low grip strength been associated with?

Answer:

- Premature mortality
- Development of disability
- Increased complications after hospitalization or sx

The JAMAR utilizes what kind of system?

The JAMAR utilizes what kind of system?

Answer: Closed hydraulic system

The JAMAR measures grip strength in what units?

The JAMAR measures grip strength in what units?

Answer: Pounds and kilograms

What are some disadvantages of handheld dynamometry?

What are some disadvantages of handheld dynamometry?

- Poor interrater reliability
- Lacking standardization
- Increased pt prep time
- Outcome varies b/c of PT resistance, pt position, PT position

What are some advantages of the handheld dynamometry?

What are some advantages of the handheld dynamometry?

Answer:

- Clinically easy to use
- Relatively inexpensive
- More objective than MMT
- Can measure isometric, concentric and eccentric contraction
- Good to excellent intrarater reliability

Handheld dynamometry is more reliable with which extremities?

Handheld dynamometry is more reliable with which extremities?

Answer: Upper extremity