QUESTION 1 The electrodes are placed on the following areas; lower medial wrist,

Question

QUESTION 1

The electrodes are placed on the following areas; lower medial wrist, medial middle forearm and lateral arm.

True

False

1 points   

QUESTION 2

How do we calibrate the hand dynamometer?

lay the hand dynamometer flat on the table and slowly press your body weight through your arm onto the dynamometer for 10 seconds

place a weight on top of the dynamometer, stabilize the weight, as soon as the calibration is finished immediately remove the weight off of the dynamometer

have someone your group squeeze the dynamometer as hard as they can and for as long as they can, make sure to keep track of the time

we don't need to calibrate the dynamometer, just insert 9kg into the appropriate box

1 points   

QUESTION 3

In the simple units conversion chart, what number do you place for cursor 1?

20

15

0

30

1 points   

QUESTION 4

When performing Exercise 2 EMG Intensity and Fatigue in the left forearm, the procedure is; squeeze the dynamometer with as much force as you can and try to hold it as long as you can. Once the subject falls 50% below their maximum contraction at the beginning of the recording, the subject is told to slowly release the dynamometer.

True

False

1 points   

QUESTION 5

As the subject is performing the exercises (increasing grip force and fatigue) it is a good idea to try to distract the subject.

True

False

1 points   

QUESTION 6

What channel does the hand dynamometer plug into?

channel 1

channel 4

channel 5

either channel 1 or channel 5

none of the above

1 points   

QUESTION 7

In exercise 1, the subject will perform the following procedure

the subject will squeeze the dynamometer 4 times in a row with moderate force

the subject will squeeze the dynamometer 4 times in a row and each squeeze will get progressively stronger, each squeeze will be held for 3-4 seconds and each recovery phase will be 2-3 seconds

The subject will squeeze the dynamometer 5 times in a row will a 5 second break in-between each squeeze

The subject will squeeze the dynamometer 5 times. Each squeeze will get progressively stronger and each squeeze will be held slightly longer.

1 points   

QUESTION 8

Which of the following statements is true?

the top channel is the EMG channel which represents muscle force and is measured in kilograms (kg) and the bottom channel is the muscle force channel and is measure in millivolts (mv)

the top channel is the muscle force channel and is measured in kilograms (kg), and the bottom channel is the EMG and is measured in millivolts (mv)

the top channel is the EMG channels which represents electrical activity of the nervous system and is measured in millivolts (mv), and the bottom channels is the muscle force channel and represents the strength of the contraction in kilograms (kg)

the top channel is the EMG channel which measures the force of the contraction in kilograms (kg) and we really don't need to use the bottom channel

1 points   

QUESTION 9

What should happen to muscle force (Abs. Area under Muscle Force Curve) as the electrical activity increases (Abs. Area of EMG Activity) ?

muscle force (kg) is not affected by electrical activity (mv)

muscle force (kg) and electrical activity have an indirect relationship, so as electrical activity (mv) increases muscle force will decrease

muscle force (kg) and electrical activity have a direct relationship so as electrical activity (mv) increases muscle force increases

none of the above

1 points   

QUESTION 10

If an individual is right-handed, under most circumstances it would be safe to assume that their right arm is stronger and more fatigue resistant, since it is probably used to carry out a majority of daily tasks.

True

False

lay the hand dynamometer flat on the table and slowly press your body weight through your arm onto the dynamometer for 10 seconds

place a weight on top of the dynamometer, stabilize the weight, as soon as the calibration is finished immediately remove the weight off of the dynamometer

have someone your group squeeze the dynamometer as hard as they can and for as long as they can, make sure to keep track of the time

we don't need to calibrate the dynamometer, just insert 9kg into the appropriate box

Explanation / Answer

Answer 1- True
Four channels measurement arrangement for EMG recording process (two electrodes for temporalis muscles, two electrodes for masseter muscles, and one reference electrode on the forehead).

Answer 2
place a weight on top of the dynamometer, stabilize the weight, as soon as the calibration is finished immediately remove the weight off of the dynamometer

Answer 3
In the simple units conversion chart, 20 number place for cursor 1.

Answer 4
True

Answer 5
True

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