Assessing the influence of a passive, upper extremity exoskeletal vest for tasks requiring arm elevation: Part II - "Unexpected" effects on shoulder motion, balance, and spine loading

Appl Ergon. 2018 Jul:70:323-330. doi: 10.1016/j.apergo.2018.02.024. Epub 2018 Mar 7.

Abstract

Adopting a new technology (exoskeletal vest designed to support overhead work) in the workplace can be challenging since the technology may pose unexpected safety and health consequences. A prototype exoskeletal vest was evaluated for potential unexpected consequences with a set of evaluation tests for: usability (especially, donning & doffing), shoulder range of motion (ROM), postural control, slip & trip risks, and spine loading during overhead work simulations. Donning/doffing the vest was easily done by a wearer alone. The vest reduced the max. shoulder abduction ROM by ∼10%, and increased the mean center of pressure velocity in the anteroposterior direction by ∼12%. However, vest use had minimal influences on trip-/slip-related fall risks during level walking, and significantly reduced spine loadings (up to ∼30%) especially during the drilling task. Use of an exoskeletal vest can be beneficial, yet the current evaluation tests should be expanded for more comprehensiveness, to enable the safe adoption of the technology.

Keywords: Exoskeleton; Intervention; Overhead work.

MeSH terms

  • Accidental Falls
  • Adolescent
  • Adult
  • Electromyography
  • Exoskeleton Device*
  • Female
  • Humans
  • Lumbar Vertebrae / physiology*
  • Lumbosacral Region / physiology
  • Male
  • Muscle, Skeletal / physiology*
  • Occupational Health*
  • Postural Balance*
  • Range of Motion, Articular
  • Sacrum / physiology
  • Shoulder Joint / physiology*
  • Task Performance and Analysis
  • Weight-Bearing
  • Young Adult