AEP Biomechanics and Anthropometry

Question 1

What is anthropometry primarily concerned with?

Accepted Answer

The study of human body measurements and physical dimensions

Answer

The analysis of workplace chemical exposures

Answer

The evaluation of cognitive workload in task design

Answer

The measurement of environmental noise levels

Question 2

Which spinal segment is most commonly assessed when evaluating lumbar compression forces during manual material handling?

Accepted Answer

L5-S1

Answer

C5-C6

Answer

T12-L1

Answer

L1-L2

Question 3

Torque (moment of force) is calculated as the product of force and which other variable?

Accepted Answer

Perpendicular distance from the pivot point (moment arm)

Answer

Mass of the object

Answer

Velocity of movement

Answer

Duration of force application

Question 4

When designing a workstation to accommodate the broadest population, which anthropometric range is typically recommended as the design target?

Accepted Answer

5th to 95th percentile

Answer

10th to 90th percentile

Answer

25th to 75th percentile

Answer

1st to 99th percentile

Question 5

What does 'static anthropometry' measure?

Accepted Answer

Body dimensions taken with the body in fixed, standardized positions

Answer

Forces exerted during dynamic movement

Answer

Postural changes across a full work shift

Answer

Muscle activation patterns during lifting

Question 6

The NIOSH maximum permissible compressive force limit at the L5/S1 disc for lifting tasks is:

Accepted Answer

3,400 N

Answer

2,700 N

Answer

4,500 N

Answer

6,400 N

Question 7

Which biomechanical principle explains why holding a load close to the body significantly reduces spinal stress?

Accepted Answer

Shorter moment arm decreases the torque required from back muscles

Answer

Increased friction between load and body reduces shear forces

Answer

The load weight is transferred to the hips rather than the spine

Answer

Proximity activates larger leg muscles to compensate