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Related Experiment Video

Updated: May 12, 2026

Computerized Dynamic Posturography for Postural Control Assessment in Patients with Intermittent Claudication
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Effects of a Passive Back-Support Exosuit on Postural Control and Cognitive Performance During a Fatigue-Inducing

Jiwon Kim1, Sang Hyeon Kang1, Jinfeng Li1

  • 1Iowa State University, USA.

Human Factors
|January 3, 2024
PubMed
Summary

A passive back-support exosuit effectively reduced muscle fatigue and improved postural control during a prolonged static posture task. This wearable technology also enhanced cognitive performance, particularly in information integration.

Keywords:
cognitive performanceexoskeletoninformation processingmuscle fatiguepostural control

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Area of Science:

  • Ergonomics and Human Factors
  • Biomechanics
  • Neuroscience

Background:

  • Wearable support systems, such as exosuits, are designed to alleviate physical strain.
  • These systems may indirectly impact postural control and cognitive functions by mitigating muscle fatigue.

Purpose of the Study:

  • To assess the efficacy of a passive back-support exosuit.
  • Evaluate its effects on postural control and cognitive performance during a fatiguing posture maintenance task.

Main Methods:

  • Eighteen participants performed a 16-minute, 35° trunk flexion posture task with and without an exosuit.
  • Dual-task cognitive assessments (information acquisition, integration, action implementation) and center-of-pressure (CoP) measures were used.
  • Erector spinae muscle activity and perceived workload were recorded.

Main Results:

  • The exosuit significantly reduced erector spinae muscle fatigue (61% less in Δmedian frequency).
  • Exosuit use improved postural control by decreasing CoP velocity (23% less).
  • Cognitive performance, specifically information integration, was enhanced (8% higher hit-to-signal ratio), and perceived workload was reduced.

Conclusions:

  • Passive back-support exosuits offer benefits for postural control and cognitive processing during sustained static postures.
  • These findings suggest positive implications for occupations requiring both physical and cognitive effort.