Biomechanical evaluation of assistive devices for transferring residents

Ziqing Zhuang, Terrence J Stobbe, Hongwei Hsiao, James W. Collins, Gerald R. Hobbs

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

This is the first of two articles to report a biomechanical evaluation and psychophysical assessment of nine battery-powered lifts, a sliding board, a walking belt, and a baseline manual method for transferring nursing home residents from a bed to a chair. The objectives of the biomechanical evaluation were: (1) to investigate the effects of transfer method and resident weight on the biomechanical stress to nursing assistants performing the transferring task, and (2) to identify resident-transferring methods that could reduce the biomechanical stress to the nursing assistants. Nine nursing assistants served as test subjects; two elderly persons participated as residents. A four-camera motion analysis system, two force platforms, and a three-dimensional biomechanical model were used to measure biomechanical load. The results indicate that transfer method and resident weight affect a nursing assistant's low-back loading. The basket-sling and overhead lift devices significantly reduced the nursing assistants' back-compressive forces during the preparation phase of a resident transfer. In addition, the use of basket-sling, over-head, and stand-up lifts removed about two-thirds of the exposure to low-back stress (lifting activities per transfer) as compared to the baseline manual method. Thus, the use of these devices reduces biomechanical stress, and thereby will decrease the occurrence of resident-handling-related low-back injuries. Furthermore, lifting device maneuvering forces were found to be significantly different and a number of design/use problems were identified with various assistive devices. The second article will detail the psychophysical assessment of the same resident-transferring methods.

Original languageEnglish (US)
Pages (from-to)285-294
Number of pages10
JournalApplied Ergonomics
Volume30
Issue number4
DOIs
StatePublished - Aug 1999
Externally publishedYes

Fingerprint

Self-Help Devices
Nursing
resident
assistant
nursing
evaluation
Slings
Equipment and Supplies
Back Injuries
Hospital beds
Weights and Measures
test subject
Nursing Homes
Walking
systems analysis
nursing home
Cameras
Head
human being

Keywords

  • Back injury
  • Biomechanical evaluation
  • Patient-handling devices

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Safety, Risk, Reliability and Quality
  • Human Factors and Ergonomics

Cite this

Biomechanical evaluation of assistive devices for transferring residents. / Zhuang, Ziqing; Stobbe, Terrence J; Hsiao, Hongwei; Collins, James W.; Hobbs, Gerald R.

In: Applied Ergonomics, Vol. 30, No. 4, 08.1999, p. 285-294.

Research output: Contribution to journalArticle

Zhuang, Ziqing ; Stobbe, Terrence J ; Hsiao, Hongwei ; Collins, James W. ; Hobbs, Gerald R. / Biomechanical evaluation of assistive devices for transferring residents. In: Applied Ergonomics. 1999 ; Vol. 30, No. 4. pp. 285-294.
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