Temporal leeway: can it help to reduce biomechanical load for older workers performing repetitive light assembly...

Area of Science:

• Industrial Engineering
• Ergonomics
• Human Factors

Background:

• Modern industrial production allows for customized products, often leading to increased time pressures on assembly line workers.
• These time constraints may disproportionately affect older workers, potentially impacting their performance and well-being.

Purpose of the Study:

• To investigate the effects of restrictive versus flexible pacing on younger and older workers during customized product assembly.
• To analyze key performance indicators including cycle-time, assembly performance, muscular load, and kinematic adaptations.

Main Methods:

• A laboratory study comparing younger and older participants under different pacing conditions (restrictive vs. flexible).
• Data collection focused on cycle-time, assembly performance metrics, electromyography for muscular load, and motion analysis for kinematics.

Main Results:

• Flexible pacing enhanced production performance and increased assembly cycle-time for both age groups.
• Flexible pacing significantly reduced biomechanical load across all participants.
• Older participants experienced higher biomechanical load, particularly in tasks requiring fine manual dexterity, even under flexible pacing.

Conclusions:

• Implementing flexible time constraints in assembly lines is beneficial for overall production and worker well-being.
• Assembly line designers must consider the specific needs of older workers, especially for tasks demanding high levels of fine motor control.
• Further ergonomic interventions may be necessary to mitigate biomechanical stress for older workers in dexterity-intensive roles.