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Lab exam 1
Terms in this set (40)
ACL prevention programs have been shown to reduce the risk of ACL injuries by what range?
Please select all of the items below that are needed to properly set up, record, and complete a LESS evaluation.
2 video cameras, tape measure, 30cm box, and tape or floor marker for target
When instructing an individual participant who is completing a LESS evaluation, which of the following components are necessary? Select all that apply.
3 trials, demonstrate an example performance, and opportunity to practice
Which of the following BEST describes the order of actions involved in a performance for a LESS evaluation?
broad jump--- landing--- maximal vertical jump
A modified LESS that can be completed by a fitness professional or clinician is comprised of how many specific scoring criteria items?
What is the "cut off value" identified by the developers of the LESS that if participants score greater than, they have an increased risk of suffering an ACL injury?
Which of the items listed below are identified difficulties of the full original LESS and used as justification for exercise professionals and clinicians performing a Modified LESS?
complex screen definitions
Movement screens like the LESS can help reduce the risk of ACL injuries by which of the following?
identify risky movement patterns
When completing a scoring of an individual's performance, the overall score and injury risk should be based on which of the following?
average score on the 3 trails
True or False:
An individual who is identified by a LESS evaluation as someone who is NOT at high risk of an ACL injury, could still suffer an ACL injury during sporting activities.
What does the Landing Error Scoring System (LESS) assess to identify individuals at high risk for ACL injuries?
movement patterns of individuals across multiple planes
What was one of the inclusion criteria components for this study?
Healthy and free of orthopedic injury at the time of testing
In the Landing Error Scoring System, which two planes of motion do the cameras analyze?
frontal and sagittal
If an individual sustained an ACL injury in the 5 years prior to this study, were they automatically excluded from participation?
What is the height of the box that participants jump from during a LESS screen?
When were the participants given feedback while completing the jump-landing task?
only if they are performing the task incorrectly
How is the actual LESS score determined by the reviewer?
a count of landing technique errors
To receive a LESS score that suggests a higher risk of injury, the score had to be greater than what value?
What types of motions were associated with higher LESS scores and poor performances?
less knee and hip flexion and more knee valgus and hip internal rotation
What was a reason the article mentioned to why researchers choose to perform a LESS screen instead of the gold standard lab-based 3-D motion analysis?
less time and lower cost
Camera calibrations are important to guarantee the accuracy of data to be collected and examined using a 3D motion analysis system. The Longwood Biomechanics Lab's Vicon camera system should be calibrated how often?
at the beginning of every training session
Which of the following BEST states why it is necessary to "mask" the cameras prior to calibrating the cameras and completing any testing?
Reduce the introduction of marker errors from reflective surfaces
Which of the following is NOT a measurement that needs to be recorded and entered into the system prior to data collection?
Which of the listings below would be an accurate measurement for patient height to enter into the Vicon system when utilizing a Plug-in Gait model to examine human motion?
1800mm (has to be in mm)
When utilizing a Plug-in Gait (lower body) model to collect and examine human movement, how many reflective markers must be placed on the patient?
True or False
It does not impact the validity of the data if you place the reflective markers directly on the skin of a participant or if you place them on loose fitting clothing that the patient is wearing.
The Longwood Biomechanics Lab has an 8 camera Vicon system. When collecting data, how many cameras must be able to "see" a reflective marker at a point in time to be able to determine the marker's exact location in space?
Which of the following may be a concern when placing reflective markers on obese individuals or those with a significant level of adipose tissue?
Excessive reflective marker movement that is not representative of patient motion
When collecting the patient calibration frames, which of the following best describes the patient's positioning?
anatomical reference position
Which of the items listed below is it important to check for on the patient prior to collecting data?
jewelry cant be seen, clothing that may cover the marker and reflective material on clothing or shoes
Which plane of motion does this activity result in the LEAST amount of trunk movement in?
In what plane of motion does MOST of the individual's knee and hip motion during the lunge component of the activity occur in?
Around which axis of motion does the MAJORITY of the motion during the lunge component of the activity occur?
Which of the following joint motions is NOT present in this stretch?
In which plane of motion is the trunk rotation that occurs in this activity occurring?
About what axis of motion is the trunk rotating during this activity?
The initial knee hug (the individual's left knee) creates what motion at the individual's left hip as the knee is brought in tight to the chest?
At the 10 second mark, how would you describe the position/movement of the right hip in the sagittal plane?
At the 16.9 time mark of the video,which of the items below BEST describes the position/motion of the left ankle in the Sagittal Plane?
Which of the terms below BEST describes the motion of the individual's left knee from the 20.7 time mark to 20.9 time mark, in the sagittal plane?
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