Biomechanics Practice Question Compilation

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Questions and Answers

Interference in the acquisition of a skill can occur when two tasks are practiced in sequence with an interim period of?

less than 6hrs

what is the effect of aging on muscle?

increased stiffness

The strain loads for a ligament during most daily activities, including walking and jogging, is?

in the toe region up to 1% strain

which mechanism can lead to ACL rupture?

valgus load with external tibial rotation Signup and view all the answers

which activity is likely to exacerbate patellofemoral pain?

descending stairs Signup and view all the answers

which posture is most free of mechanical stress?

reclining Signup and view all the answers

What variable factor is in the NIOSH recommended weight limit (RWL) formula?

frequency Signup and view all the answers

An event in the stance phase of human gait where there is no horizontal force

mid stance Signup and view all the answers

This source of power generation during gait increases most prominently with speed (i.e., between walking, running, and sprinting)

hip flexor Signup and view all the answers

A gait pathology caused by gluteus medius weakness

trendelenburg gait Signup and view all the answers

The effects of stroke on gait fits into which Perry (2010) functional category?

deformity Signup and view all the answers

motor learning is defined as the:

adaptation of control of movement that occurs with task rehersal Signup and view all the answers

the moment arm is effected by:

the joint angle Signup and view all the answers

which factor does NOT influence force production?

serial element Signup and view all the answers

which factors do NOT confound the angle torque relationship

the cross sectional area of the group of muscles Signup and view all the answers

what is a reason for the force velocity relationship?

resistance due to viscous damping Signup and view all the answers

bi articular muscles play a key role in:

all of the above. Signup and view all the answers

which movement would you expect to place the highest load on the ACL?

running downhill Signup and view all the answers

What factors/data are required to develop a model to measure patellofemoral joint (PFJ) stress?

all of the above Signup and view all the answers

free body diagrams:

are simple stick figures of the joint or whole body involved in movement Signup and view all the answers

weight is:

all of the above Signup and view all the answers

Which one of these activities would you NOT need to include ground reaction force in a free body diagram?

flight phase of long jump Signup and view all the answers

centre of pressure is

the point of application of the ground reaction force Signup and view all the answers

the joint reaction force is NOT:

generated between the foot and the ground Signup and view all the answers

overexertion can be caused by

all of the above Signup and view all the answers

which one the these sub phases is NOT in the gait cycle

pre stance Signup and view all the answers

at initial contact the hip, knee, ankle and foot are mostly in which position?

Flexion (hip), extension (knee), neutral (ankle), supinated (ankle) Signup and view all the answers

when we transition from walking to running, we do not see:

two double support periods Signup and view all the answers

An external torque/moment is NOT produced by:

muscles Signup and view all the answers

Most power generation and absorption occur in which plane(s) of motion?

sagittal Signup and view all the answers

hip abduction occurs in which plane of motion, and at initial contact we ___ power?

frontal and absorb Signup and view all the answers

at toe off, which muscle isn't active

glute max Signup and view all the answers

factors NOT affecting locomotion as we age include:

decreased latency period Signup and view all the answers

a common change in gait as we as is:

increased double support time Signup and view all the answers

the second functional category that gait abnormalities fall into as stated by Perry was:

muscle weakness Signup and view all the answers

which is not a common pointer for observational gait assessment?

muscle weakness Signup and view all the answers

according to the ACSM, a heel to toe drop should be

6mm or less Signup and view all the answers

developmental biomechanics is multidisciplinary and made up of 4 categories, these include

affective, motor, cognitive and physical Signup and view all the answers

the centre of mass of a limb in a child compared to an adult is

more distal Signup and view all the answers

which mechanical method is used to assess the safety of ground surfaces in children's playgrounds?

critical fall height test Signup and view all the answers

Study Notes

Motor Learning and Gait

Interference in acquiring a skill can occur when two tasks are practiced in sequence with an interim period.

Gait and Aging

The effect of aging on muscle is significant.
Factors not affecting locomotion as we age include:
A common change in gait as we age is:
The second functional category that gait abnormalities fall into as stated by Perry is:

Patellofemoral Joint (PFJ) Stress

Factors/data required to develop a model to measure PFJ stress include:
Activities that are likely to exacerbate patellofemoral pain include:

Ligament Loads and ACL Rupture

The strain loads for a ligament during most daily activities, including walking and jogging, is:
Mechanisms that can lead to ACL rupture include:
Movement that would place the highest load on the ACL is:

Muscle Function and Gait

A gait pathology caused by gluteus medius weakness is:
Bi-articular muscles play a key role in:
At toe off, the muscle that isn't active is:
Hip abduction occurs in the frontal plane of motion, and at initial contact, we generate power.

Gait Cycle and Joint Forces

At initial contact, the hip, knee, ankle, and foot are mostly in a:
During the stance phase of human gait, there is an event where there is no horizontal force:
Centre of pressure is:
Joint reaction force is NOT:
Free body diagrams:

Power Generation and Force Production

A source of power generation during gait increases most prominently with speed (i.e., between walking, running, and sprinting).
The moment arm is affected by:
A reason for the force-velocity relationship is:
A factor that does NOT influence force production is:
Overexertion can be caused by:

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Biomechanics Practice Question Compilation

Questions and Answers

Interference in the acquisition of a skill can occur when two tasks are practiced in sequence with an interim period of?

what is the effect of aging on muscle?

The strain loads for a ligament during most daily activities, including walking and jogging, is?

which mechanism can lead to ACL rupture?

which activity is likely to exacerbate patellofemoral pain?

which posture is most free of mechanical stress?

What variable factor is in the NIOSH recommended weight limit (RWL) formula?

An event in the stance phase of human gait where there is no horizontal force

This source of power generation during gait increases most prominently with speed (i.e., between walking, running, and sprinting)

A gait pathology caused by gluteus medius weakness

The effects of stroke on gait fits into which Perry (2010) functional category?

motor learning is defined as the:

the moment arm is effected by:

which factor does NOT influence force production?

which factors do NOT confound the angle torque relationship

what is a reason for the force velocity relationship?

bi articular muscles play a key role in:

which movement would you expect to place the highest load on the ACL?

What factors/data are required to develop a model to measure patellofemoral joint (PFJ) stress?

free body diagrams:

weight is:

Which one of these activities would you NOT need to include ground reaction force in a free body diagram?

centre of pressure is

the joint reaction force is NOT:

overexertion can be caused by

which one the these sub phases is NOT in the gait cycle

at initial contact the hip, knee, ankle and foot are mostly in which position?

when we transition from walking to running, we do not see:

An external torque/moment is NOT produced by:

Most power generation and absorption occur in which plane(s) of motion?

hip abduction occurs in which plane of motion, and at initial contact we ___ power?

at toe off, which muscle isn't active

factors NOT affecting locomotion as we age include:

a common change in gait as we as is:

the second functional category that gait abnormalities fall into as stated by Perry was:

which is not a common pointer for observational gait assessment?

according to the ACSM, a heel to toe drop should be

developmental biomechanics is multidisciplinary and made up of 4 categories, these include

the centre of mass of a limb in a child compared to an adult is

which mechanical method is used to assess the safety of ground surfaces in children's playgrounds?

Study Notes

Motor Learning and Gait

Gait and Aging

Patellofemoral Joint (PFJ) Stress

Ligament Loads and ACL Rupture

Muscle Function and Gait

Gait Cycle and Joint Forces

Power Generation and Force Production

Studying That Suits You

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