Question 1

Reconstruction of 3D marker locations can be achieved using

Accepted Answer

A)  Fourier transformation 
B)  Direct Linear Transformation 
C)  Pythagoras' Theorem 
D)  Calculus 
E)  Hooke's law 
A)  Fourier transformation 
B)  Direct Linear Transformation 
C)  Pythagoras' Theorem 
D)  Calculus 
E)  Hooke's law B

Question 2

Which of the following outcomes could not be assessed using a 3D optoelectronic motion analysis system alone?

Accepted Answer

A)  Knee flexion and extension angle 
B)  Hip joint moment 
C)  Linear velocity of the foot segment 
D)  Trunk flexion angle 
E)  Step length during walking 
A)  Knee flexion and extension angle 
B)  Hip joint moment 
C)  Linear velocity of the foot segment 
D)  Trunk flexion angle 
E)  Step length during walking B

Question 3

Increasing the racket mass in tennis is more important for ball speed than increasing the speed of the racket towards the ball.

Accepted Answer

A) True 
 B)False  False

Question 4

Name some of the variables that an Isokinetic dynamometer can measure?

Accepted Answer

Peak Torque, Angle of Peak Tor

Question 5

Which of the following cannot directly be obtained from the dimensions of a force plate, the output from its transducers and/or the mass of the participant on the plate?

Accepted Answer

A)  Location of the centre of pressure 
B)  Free moment 
C)  Acceleration of the centre of mass 
D)  Ground reaction force 
E)  Joint reaction force 
A)  Location of the centre of pressure 
B)  Free moment 
C)  Acceleration of the centre of mass 
D)  Ground reaction force 
E)  Joint reaction force

Question 6

A force of 1200 N exerted over a contact area of 0.03 m2 would be more likely to cause an injury than a force of 800 N exerted over a contact area of 0.018 m2

Accepted Answer

A) True 
 B)False

Question 7

What is an agonist muscle?

Accepted Answer

The agonist muscle is defined

Question 8

Given optoelectronic motion analysis systems rely on light to identify markers, which of the following have the potential to influence these systems?

Accepted Answer

A)  Dimly lit laboratories 
B)  Vibrant clothing 
C)  Sunlight 
D)  Highly-polished surfaces or metals 
E)  Barometric pressure 
A)  Dimly lit laboratories 
B)  Vibrant clothing 
C)  Sunlight 
D)  Highly-polished surfaces or metals 
E)  Barometric pressure

Question 9

Given the following: xi-1 = 1.221
Xi = 1.274
Xi+1 = 1.253
Use the Hanning algorithm to calculate the smoothed data point (yi) to 3 decimal places.

Accepted Answer

A)  1.261 
B)  1.256 
C)  1.271 
D)  1.243 
E)  1.284 
A)  1.261 
B)  1.256 
C)  1.271 
D)  1.243 
E)  1.284

Question 10

If a camera has field of view of 5 m, what diameter markers would be recommended for use?

Accepted Answer

A)  15 mm 
B)  30 mm 
C)  25 mm 
D)  10 mm 
E)  5 mm 
A)  15 mm 
B)  30 mm 
C)  25 mm 
D)  10 mm 
E)  5 mm

Question 11

The Hanning algorithm

Accepted Answer

A)  fits a smoothed curve to five adjacent data points 
B)  provides greater flexibility for smoothing biomechanical data 
C)  is a moving average method of data smoothing 
D)  is the same as the 4th order Butterworth algorithm 
E)  has no application in biomechanics 
A)  fits a smoothed curve to five adjacent data points 
B)  provides greater flexibility for smoothing biomechanical data 
C)  is a moving average method of data smoothing 
D)  is the same as the 4th order Butterworth algorithm 
E)  has no application in biomechanics

Question 12

During the install of a new optoelectronic motion analysis system, you describe to the technician that you are planning to assess the performance of long jumpers. On the basis of the information that you've provided, he recommends that you use joint markers that have a diameter of 30 mm. Given this information, calculate the size of the cameras' fields of view?

Accepted Answer

As a general rule, one should

Question 13

Isometric or static testing is a situation when the muscle develops tension and the fibres shorten but no movement of the lever arm takes place

Accepted Answer

A) True 
 B)False

Question 14

Why are two electrodes usually used to record the electromyographic signal at the skin surface?

Accepted Answer

A)  In case the signal from one of the electrodes is lost 
B)  Because the amplifier subtracts the signal from one electrode from the other, thus removing noise from the recorded signal 
C)  To record the signal from a greater number of motor units 
D)  To reduce the effect of cross-talk 
E)  To reduce skin resistance 
A)  In case the signal from one of the electrodes is lost 
B)  Because the amplifier subtracts the signal from one electrode from the other, thus removing noise from the recorded signal 
C)  To record the signal from a greater number of motor units 
D)  To reduce the effect of cross-talk 
E)  To reduce skin resistance

Question 15

In your own words, describe why the 2nd and 4th order Butterworth algorithms are related

Accepted Answer

Within the biomechanics literature, the

Question 16

What is the current world record for the 4000 m individual track pursuit in cycling?

Accepted Answer

A)  4 min 10.534 seconds 
B)  4 min 20.9 seconds 
C)  4 mins 19 seconds 
D)  4 mins 11.114 seconds 
E)  none of these 
A)  4 min 10.534 seconds 
B)  4 min 20.9 seconds 
C)  4 mins 19 seconds 
D)  4 mins 11.114 seconds 
E)  none of these

Question 17

A pressure of 78.256 kPa is equivalent to a pressure of 0.772 Atmospheres

Accepted Answer

A) True 
 B)False

Question 18

The main purpose of normalising EMGs is to allow comparison with those from other muscles and/or people:

Accepted Answer

A) True 
 B)False

Question 19

The term isokinetic means

Accepted Answer

A)  Testing while no movement of the lever arm takes place 
B)  Testing against a constant or pre-selected variable resistance 
C)  Testing where the rate of the movement is held at a constant pre-determined angular velocity 
D)  Testing where the rate of movement and the resistance is held constant 
E)  All of these 
A)  Testing while no movement of the lever arm takes place 
B)  Testing against a constant or pre-selected variable resistance 
C)  Testing where the rate of the movement is held at a constant pre-determined angular velocity 
D)  Testing where the rate of movement and the resistance is held constant 
E)  All of these

Question 20

Sensors that can measure angular velocity are known as

Accepted Answer

A)  Gyroscopes 
B)  Magnetometers 
C)  Barometers 
D)  Electrogoniometers 
E)  Accelerometers 
A)  Gyroscopes 
B)  Magnetometers 
C)  Barometers 
D)  Electrogoniometers 
E)  Accelerometers

Reconstruction of 3D marker locations can be achieved using

Which of the following outcomes could not be assessed using a 3D optoelectronic motion analysis system alone?

Increasing the racket mass in tennis is more important for ball speed than increasing the speed of the racket towards the ball.

Name some of the variables that an Isokinetic dynamometer can measure?

Which of the following cannot directly be obtained from the dimensions of a force plate, the output from its transducers and/or the mass of the participant on the plate?

A force of 1200 N exerted over a contact area of 0.03 m² would be more likely to cause an injury than a force of 800 N exerted over a contact area of 0.018 m²

What is an agonist muscle?

Given optoelectronic motion analysis systems rely on light to identify markers, which of the following have the potential to influence these systems?

Given the following: x_i-1 = 1.221 X_i = 1.274 X_i+1 = 1.253 Use the Hanning algorithm to calculate the smoothed data point (y_i) to 3 decimal places.

If a camera has field of view of 5 m, what diameter markers would be recommended for use?

The Hanning algorithm

Isometric or static testing is a situation when the muscle develops tension and the fibres shorten but no movement of the lever arm takes place

Why are two electrodes usually used to record the electromyographic signal at the skin surface?

In your own words, describe why the 2nd and 4th order Butterworth algorithms are related

What is the current world record for the 4000 m individual track pursuit in cycling?

A pressure of 78.256 kPa is equivalent to a pressure of 0.772 Atmospheres

The main purpose of normalising EMGs is to allow comparison with those from other muscles and/or people:

The term isokinetic means

Sensors that can measure angular velocity are known as

Kinematics of Linear Motion

Kinetics of Linear Motion

Kinematics and Kinetics of Angular Motion

Muscle and Joint Kinematics and Kinetics

Special Topics

Human Movement Applications

Filters

Exam 7: Measurement and Analysis Techniques

Reconstruction of 3D marker locations can be achieved using

Which of the following outcomes could not be assessed using a 3D optoelectronic motion analysis system alone?

Increasing the racket mass in tennis is more important for ball speed than increasing the speed of the racket towards the ball.

Name some of the variables that an Isokinetic dynamometer can measure?

Which of the following cannot directly be obtained from the dimensions of a force plate, the output from its transducers and/or the mass of the participant on the plate?

A force of 1200 N exerted over a contact area of 0.03 m2 would be more likely to cause an injury than a force of 800 N exerted over a contact area of 0.018 m2

What is an agonist muscle?

Given optoelectronic motion analysis systems rely on light to identify markers, which of the following have the potential to influence these systems?

Given the following: xi-1 = 1.221 Xi = 1.274 Xi+1 = 1.253 Use the Hanning algorithm to calculate the smoothed data point (yi) to 3 decimal places.

If a camera has field of view of 5 m, what diameter markers would be recommended for use?

The Hanning algorithm

Isometric or static testing is a situation when the muscle develops tension and the fibres shorten but no movement of the lever arm takes place

Why are two electrodes usually used to record the electromyographic signal at the skin surface?

In your own words, describe why the 2nd and 4th order Butterworth algorithms are related

What is the current world record for the 4000 m individual track pursuit in cycling?

A pressure of 78.256 kPa is equivalent to a pressure of 0.772 Atmospheres

The main purpose of normalising EMGs is to allow comparison with those from other muscles and/or people:

The term isokinetic means

Sensors that can measure angular velocity are known as

Kinematics of Linear Motion

Kinetics of Linear Motion

Kinematics and Kinetics of Angular Motion

Muscle and Joint Kinematics and Kinetics

Special Topics

Human Movement Applications

Filters

A force of 1200 N exerted over a contact area of 0.03 m² would be more likely to cause an injury than a force of 800 N exerted over a contact area of 0.018 m²

Given the following: x_i-1 = 1.221 X_i = 1.274 X_i+1 = 1.253 Use the Hanning algorithm to calculate the smoothed data point (y_i) to 3 decimal places.