Evaluation of passive exoskeletons on physical and cognitive demands and their relationship with user preference
Description:
Low-back passive exoskeletons have been introduced in manufacturing settings as personal protective equipment (PPE) to prevent back injuries. However, user acceptance of exoskeletons varies due to usability concerns. This study evaluated physical and cognitive responses to wearing different exoskeletons while performing simulated manufacturing tasks and their relationship with user preference. A decrease in cognitive workload and muscle activation was found for 83% of the participants when using their preferred exoskeleton for the intended use (lifting). No change or increase in cognitive workload and muscle activation was observed when performing an unrelated task (walking).
Participants reported no increase in cognitive workload from wearing any of the exoskeletons, as supported by NASA-TLX scores.
Low-back exoskeletons reduced lumbar muscle activation when lifting. A greater reduction in muscle activation was observed when participants used their preferred exoskeleton.
Exoskeletons hindered the ability to perform unrelated tasks to their use. An increase in lumbar muscle activation was observed while walking with the exoskeletons.
Presenting Speakers
Lucie Outlaw | Auburn University
Yadrianna Acosta-Sojo | Auburn University
Mark Schall | Auburn University
Gregory Purdy | Auburn University
Richard Sesek | Auburn University
Evaluation of passive exoskeletons on physical and cognitive demands and their relationship with user preference