MCQ

Question 1

What is kinematics?

Answer 1

The study of joint angles

Question 2

What plane is knee extension measured in?

Answer 2

Sagittal plane

Question 3

What plane is shoulder adduction measured in?

Answer 3

frontal/ coronal

Question 4

How many frames in a half minute long 25FPS video?

Answer 4

750

Question 5

If a car is moving at 30ms and uniformly slows down to 5ms in 5s then its deceleration is?

Answer 5

-5ms

Question 6

What is the resultant velocity of the projectile represented by the green line?

6cm by 3cm triangle

Answer 6

6.7ms

Question 7

What is the resultant velocity of the projectile represented by the green line?

5cm by 2cm triangle

Answer 7

5.3ms

Question 8

List the equations for SOH CAH TOA

Answer 8

sin = opp/hyp
cos = adj/hyp
tan = opp/adj

Question 9

Normalisation of sEMG requires?

Answer 9

Maximum voluntary contraction

Question 10

Which of these is not a method of processing EMG signals?

Answer 10

Root median squared

Question 11

What is the balance system of the inner ear called?

Answer 11

Vestibular

Question 12

Which of the following is a key phase of running?
Balance
Foot contact
Stance
Double limb support

Answer 12

Stance

Question 13

Which plane of motion lies vertically and divides the body into front and back halves?

Answer 13

Frontal/ coronal

Question 14

Knee flexion takes place in what plane?

Answer 14

Saggital

Question 15

If a video trial is 10 seconds long and consists of 200 frames what is the frame rate?

Answer 15

20Hz

200/10

Question 16

What should you ensure when filming movement?
A-The markers are on key bony landmarks
B-The participant should be topless
C-The markers should be placed over the muscle
D- A and B

Answer 16

A- markers on key anatomical landmarks

Question 17

What colour should the central section of a spatial model be?

Answer 17

Blue

Question 18

Which of the following is a key phase of the walking gait cycle?
Heel strike
Swing 
Stand
Toe off

Answer 18

Swing

Question 19

What does root mean square do to EMG data?

Answer 19

Removes negative numbers and averages the data

Question 20

In what plane and around which axis do star jumps take place?

Answer 20

Coronal and anteroposterior

Question 21

What should you ensure when filming movement?
A-the background should be blue 
B-The background should be uncluttered
C-The background should be contrasting
D-B and C

Answer 21

D- uncluttered and contrasting

Question 22

Why do EMG signals need to be amplified?

Answer 22

To reduce impact of mains electrical interference

Question 23

Rearrange v=u+at to make t the subject?

Answer 23

t= v-u/a

Question 24

What does full wave rectification of the EMG signal mean?

Answer 24

Calculating the change in amplitude over full wave

Question 25

Muscle forces in the body vary due to?

Answer 25

Firing rate of the muscle

Question 26

``` Force can be measured using? A-Load cell B-Scales C-Potenionmeter D-All of the above ```

Answer 26

D- all of the above

Question 27

Calculate QR find adj got opp = 3cm angle = 50 degrees

Answer 27

QR= 2.5cm Tan 3/ tan (50)

Question 28

what axis does the saggital plane refer to?

Answer 28

Medial lateral axis

Question 29

what axis does the coronal/ frontal plane refer to?

Answer 29

Anteroposterior axis

Question 30

what axis does the transverse plane refer to?

Answer 30

Longitudinal axis

Question 31

define kinematics?

Answer 31

study of joint angles

Question 32

define kinetics?

Answer 32

study/ measurement of forces

Question 33

how should the camera be set up when analysing data?

Answer 33

- perpendicular to the plane of motion (CS=coronal) - have whole body in the shot - set zoom, focus, shutter speed and lighting - contrasting background - uncluttered

Question 34

how many cameras are needed for 2D analysis?

Answer 34

1

Question 35

how many cameras are needed for 3D analysis?

Answer 35

2 or more

Question 36

why might someones posture be different with knee pain?

Answer 36

- pain itself can cause people to move differently - weakness in activation of muscles shown by EMG data - imbalance in quads (medial and lateral) - weakness around the glutes causing trendelenberg- changes Q angle of the femur - results in the patella tracking laterally instead of up and down - glides laterally and grinds on femoral surface causing pain and inflammation PATELLA FEMORAL SYDROME

Question 37

draw the distance speed and time triangle?

Answer 37

``` distance= speed x time time= distance/ speed speed= distance/ time ```

Question 38

velocity=?

Answer 38

velocity= displacement/ time

Question 39

acceleration=?

Answer 39

acceleration= velocity/time

Question 40

trunk lean=

Answer 40

trunk weakness

Question 41

lateral pelvic tilt=

Answer 41

glute medius weakness (trendelenberg)

Question 42

knees close together=

Answer 42

glute medius weakness (trendeleberg)

Question 43

draw the spatial model

Answer 43

red- left green-right blue- middle

Question 44

define electromyography?

Answer 44

diagnostic procedure that evaluates muscle response or electrical activity in response to nerves stimulation of the muscle