Effects of a Passive Back-Support Exosuit on Postural Control and Cognitive Performance During a Fatigue-Inducing Posture Maintenance

dc.contributor.author Kim, Jiwon
dc.contributor.author Kang, Sang Hyeon
dc.contributor.author Li, Jinfeng
dc.contributor.author Mirka, Gary
dc.contributor.author Dorneich, Michael
dc.contributor.department Industrial and Manufacturing Systems Engineering
dc.contributor.department Kinesiology
dc.date.accessioned 2024-01-17T18:22:04Z
dc.date.available 2024-01-17T18:22:04Z
dc.date.issued 2024-01-03
dc.description.abstract Objective To evaluate the effectiveness of passive back-support exosuit on postural control and cognitive performance during a fatigue-inducing posture maintenance task. Background Wearable support systems (exoskeletons/exosuits) reduce physical demands but may also influence postural control and cognitive performance by reducing muscular fatigue. Method Eighteen participants visited on two different days to test an exosuit system and performed dual-task cognitive assessments based on human information processing (information acquisition, information integration, and action implementation) while maintaining a 35° trunk flexion posture for 16 minutes. Center-of-pressure (CoP), cognitive performance, and perceived workload were recorded, while erector spinae muscle activity was captured to quantify muscle fatigue. Results The exosuit was effective in reducing erector spinae muscle fatigue during the static posture maintenance task (61% less in Δmedian frequency: −9.5 Hz (EXO-Off) versus −3.7 Hz (EXO-On)). The fatigue-inducing task increased CoP velocity as a function of time (29% greater: 9.3 mm/sec (pre) versus 12.0 mm/sec (post)), and exosuit use decreased CoP velocity (23% less: 12.1 mm/sec (EXO-Off) versus 9.4 mm/sec (EXO-On)). The exosuit was also effective at mitigating cognitive degradation, as evidenced by a higher hit-to-signal ratio (8% greater: 81.3 (EXO-Off) versus 87.9 (EXO-On)) in the information integration task and reducing perceived workload in all stages of human information processing. Conclusion Exosuit provided benefits of postural control and information integration processing during a 16-min static posture maintenance task.
dc.description.comments This is a manuscript of the article Published as Kim, Jiwon, Sang Hyeon Kang, Jinfeng Li, Gary A. Mirka, and Michael C. Dorneich. "Effects of a Passive Back-Support Exosuit on Postural Control and Cognitive Performance During a Fatigue-Inducing Posture Maintenance Task." Human Factors (2024): 00187208231221890. doi: https://doi.org/10.1177/00187208231221890. Posted with Permission. © 2024 Human Factors and Ergonomics Society.
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/3wxaQ49v
dc.language.iso en
dc.publisher Sage Publications
dc.source.uri https://doi.org/10.1177/00187208231221890 *
dc.subject.disciplines DegreeDisciplines::Life Sciences::Kinesiology::Biomechanics
dc.subject.keywords Exoskeleton
dc.subject.keywords Muscle fatigue
dc.subject.keywords Cognitive performance
dc.subject.keywords Postural control
dc.subject.keywords Information Processing
dc.title Effects of a Passive Back-Support Exosuit on Postural Control and Cognitive Performance During a Fatigue-Inducing Posture Maintenance
dc.type Article
dspace.entity.type Publication
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