Journal ArticleDOI
Evaluation of a novel stair-climbing transportation aid for emergency medical services.
Mark Verjans,Philipp Schleer,Max Kinzius,Philipp Krumholz,Lovis Phlippen,Sergey Drobinsky,Klaus Radermacher +6 more
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TLDR
A comparison to a previous field study indicates a reduction of strenuous working postures by a factor of three, which further confirms the ergonomic advantages of this concept.Abstract:
Acute and planned transportations of patients are major tasks for emergency medical services (EMS) and often result in substantial physical strains with a major impact on the workers' health, because current transportation aids cannot provide sufficient support, especially on stairs. A new stair-climbing and self-balancing approach (SEBARES) has been developed and its usability is evaluated in the context of this paper. Twelve participants operated a prototype in a transportation scenario and user forces, user joint angles and the perceived usability were evaluated. Results show that user forces were within long-term acceptable ergonomic limits for over 90% of the transportation time and a mainly healthy upright posture of the back could be maintained. This resulted in a healthy working posture for 85% of the time, according to the OWAS method, and a good perceived usability. A comparison to the most ergonomic aid according to literature, a caterpillar stair chair, reveals that similar upright postures are assumed, while the operation of SEBARES required only 47% of the forces to operate the caterpillar stair chair. A comparison to a previous field study indicates a reduction of strenuous working postures by a factor of three, which further confirms the ergonomic advantages of this concept.read more
Citations
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Journal ArticleDOI
Semi-automated stair climbing of a wheel hub-based patient transportation aid for emergency medical services
Journal ArticleDOI
A New Type of Flat Vehicle for Emergency Patient Transfer
TL;DR: In this paper , a flat vehicle for emergency patient transfer is presented, consisting of a support frame, a bed board, an infusion stand, and a transfer assembly; the transfer assembly comprises a trapezoidal base fixed on the upper part of the support frame and mounted on the bottom or side of the bed board.
References
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Journal Article
Determining what individual SUS scores mean: adding an adjective rating scale
TL;DR: A seven-point adjective-anchored Likert scale was added as an eleventh question to nearly 1,000 System Usability Scale (SUS) surveys as mentioned in this paper.
Journal ArticleDOI
Correcting working postures in industry: A practical method for analysis
TL;DR: A practical method for identifying and evaluating poor working postures, ie, the Ovako Working Posture Analysing System (OWAS), is presented and the result being more comfortable workplaces as well as a positive effect on production quality.
Journal ArticleDOI
Revisiting the factor structure of the system usability scale
James R. Lewis,Jeff Sauro +1 more
TL;DR: A comparison of the fit of three confirmatory factor analyses showed that a model in which the SUS's positive tone (odd-numbered) and negative-tone (even-numbered), were aligned with two factors had a better fit than a unidimensional model (all items on one factor) or the Usability/Learnability model as discussed by the authors.
Book ChapterDOI
The Factor Structure of the System Usability Scale
James R. Lewis,Jeff Sauro +1 more
TL;DR: It is recommended that user experience practitioners and researchers treat the SUS as a unidimensional measure of perceived usability, and no longer routinely compute Usability and Learnability subscales.
Journal ArticleDOI
Health status in the ambulance services: a systematic review
TL;DR: Several indicators suggest that workers in the ambulance services experience more health problems than the general working population and workers in other health occupations.
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