What is one advantage of a dual force plate system?

The measurement of muscular power is more accurate

Asymmetry between the left and right legs can be measured

It allows more data to be gathered and analyzed faster

Why is it important that the force plates be level?

The quality of the data can be affected

The athlete is at a higher risk of injury

The plates can be damaged easily

What is the purpose of calibrating a dual force plate system?

Transfer data faster from the plates to the software

Ensure there is no bias when data is collected

Prevent damage to the measurement instruments

How do force plates measure ground reaction force?

They break down the time rate in short time periods

They average the ground reaction forces of the left and right

They record the largest relative force per unit of time

What is the difference in a countermovement jump performed with the hands on the hips compared to using arm swing?

The jump height will be higher

The jump will be more consistent

The jump will produce greater power

On the VALD software graph, where does the ground reaction force at baseline for a countermovement jump come from?

The athlete’s countermovement

The athlete’s bodyweight

The force plate’s initial zero setting

What type of muscle action occurs when an athlete lowers themselves down to load the lower extremity during a countermovement jump?

Eccentric

Isometric

Concentric

On the VALD software graph for a countermovement jump, what point in time is marked as the start of max RFD?

End of the braking phase

Beginning of the loading phase

Middle of the propulsion phase

How does the jump height achieved during a squat jump compare to that of a countermovement jump?

Equal

Lower

Higher

 What does the coefficient of variation indicate?

The variation between all phases of a single jump

The variation between the left and right legs

The variation between multiple individual jumps

 Which is the most accurate way to calculate jump height?

Flight time analysis

Strength-to-power ratio

Impulse-momentum approach

During which phase of the countermovement jump does concentric mean power occur?

Propulsive phase

Jump phase

Unweighting phase

 Why is the reactive strength index-modified used?

It is more reliable than the reactive strength index

A drop jump may be contraindicated for some athletes

The test takes less time to learn and perform

How is the concentric mean force asymmetry between the right and left legs presented by the VALD software?

The absolute difference of the means

The average difference of the means

The percentage difference of the means

What is the primary reason for having the athlete wait enough time between attempts on the squat jump test?

Having a clear start and end for each attempt

Reducing the risk of injury to the athlete

Improving the coefficient of variation per jump

How does the countermovement jump compare to the squat jump?

The myotatic reflex is not used

Jump height is generally higher

The learning curve is lower

 Which test is recommended to reliably measure jump height?

Squat jump

Countermovement jump with arm swing

Countermovement jump without arm swing

 How does the reliability of concentric mean power compare to that of peak power for different jumps under different conditions?

Concentric mean power is more reliable

Peak power is more reliable

They are equally reliable

Why does performing the Abalakov jump result in significant change in the asymmetry metric?

Lack of arm swing during the jump

Variability due to the technique used

Built in default setting in the software

Why is concentric mean power more reliable than peak power to compare performance between athletes?

An average metric is more reliable than a maximum

It utilizes only one point in time during the test

The difference in body mass is not considered

How does concentric mean power compare to peak power for predicting jump height?

Concentric mean power is a better predictor

Peak power is a better predictor

They are equal predictors of jump height

What is recommended when there is a significant increase in the asymmetry metric from a jump test that places an increased load on the athlete?

Increase the volume for strength training

Refer to the medical team for further testing

Add more unilateral exercises to the program

How is reactive strength index-modified calculated?

Force x distance / time

Ground contact time / jump height

Jump height / contraction time

Approximately how much of a difference is there between men and women on absolute performance metrics?

5%

10%

20%

What reactive strength index value is considered particularly good for a trained athlete?

0.5

1

2