Practice and Application Flashcards
7 cards from real AEP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Practice and Application flashcards as text
An ergonomics program evaluation shows injury rates decreased by 40% after interventions. What additional metric is most important to confirm program effectiveness?
Answer: Return-to-work time and workers' compensation cost trends
Return-to-work time and compensation costs are outcome metrics that directly reflect the health and economic impact of ergonomic interventions.
A task requires workers to exert 25 lbs of grip force repeatedly. According to biomechanical principles, what physiological effect is most likely with sustained high grip force?
Answer: Muscle ischemia and accelerated fatigue
High sustained grip force compresses intramuscular vessels, causing ischemia and rapid fatigue in the forearm flexors.
A vibration assessment of a hand-held grinder shows an 8-hour energy-equivalent frequency-weighted acceleration (A(8)) of 4.5 m/s². Under ISO 5349-1, this value is:
Answer: At the action value, triggering preventive measures
ISO 5349-1 sets the action value at 2.5 m/s² and the limit value at 5 m/s²; 4.5 m/s² exceeds the action value and requires preventive measures.
Which anthropometric principle should guide the design of a reach envelope for a shared workstation used by both male and female workers?
Answer: Design reach depth for the 5th-percentile female to accommodate the smallest user
Reach envelopes should accommodate the smallest user (5th-percentile female) so that all workers can reach without overextension.
A healthcare ergonomist is analyzing patient-handling tasks. The MAPO (Movement and Assistance of Hospital Patients) Index is used to:
Answer: Quantify MSD risk from patient-handling activities and prioritize interventions
The MAPO Index assesses patient-handling risk by combining lift-aid availability, patient characteristics, and task frequency to guide intervention priority.
A newly installed conveyor belt places packages at shoulder height for workers to stack. Which hierarchy-of-controls step BEST addresses this hazard?
Answer: Adjust conveyor height to waist level (engineering control)
Adjusting the conveyor height is an engineering control that removes the shoulder-level reach hazard at the source.
An ergonomist measures seat pan depth on a new chair and finds it is 22 inches. For a 5th-percentile female worker with a popliteal-to-buttock length of 17 inches, what problem does this create?
Answer: The seat pan is too deep, compressing the back of her knees (popliteal pressure)
A seat pan deeper than the user's popliteal-to-buttock length causes the front edge to press into the back of the knees, restricting circulation.