title: Assessment of functional parameters and comfort of a new computer mouse as compared with other types of input devices.
abstract: BACKGROUND
  This study was conducted to assess functional parameters and comfort of a new computer mouse (Ergomice) as compared with three other input devices.
  
  
  METHODS
  Functional parameters (i.e., task completion time and error rate) of each device were assessed by 10 participants using standardized software based on Standard No. ISO 9241-9:2000. Comfort evaluation was also undertaken for each device using the visual analogue scale technique. Statistical analysis including the Wilcoxon signed-rank test and the Friedman test was performed using SPSS version 16.
  
  
  RESULTS
  The functional parameters of the standard mouse were better than those of the other devices. However, no significant difference was observed between this mouse and Ergomice. Overall comfort evaluation showed that the standard mouse and Ergomice were more comfortable to work with. The comfort level of hand/wrist posture in the Ergomice was higher than that of the other three devices.
  
  
  CONCLUSIONS
  The design features of Ergomice could improve its functional properties. Hand/wrist posture comfort of Ergomice was judged to be high compared with that of the other devices.
authors.affiliation: a Shiraz University of Medical Sciences , Iran.
authors.forename: Naser
authors.initials: N
authors.lastname: Dehghan
authors.affiliation: a Shiraz University of Medical Sciences , Iran.
authors.forename: Alireza
authors.initials: A
authors.lastname: Choobineh
authors.affiliation: a Shiraz University of Medical Sciences , Iran.
authors.forename: Mohsen
authors.initials: M
authors.lastname: Razeghi
authors.affiliation: a Shiraz University of Medical Sciences , Iran.
authors.forename: Jafar
authors.initials: J
authors.lastname: Hasanzadeh
authors.affiliation: b Exir Industrial Design Group , Iran.
authors.forename: Moslem
authors.initials: M
authors.lastname: Irandoost
authors.affiliation: a Shiraz University of Medical Sciences , Iran.
authors.forename: Samaneh
authors.initials: S
authors.lastname: Ebrahimi
mesh_terms: D016287:Computer Peripherals; D004867:Equipment Design; D006804:Ergonomics; D005260:Female; D006801:Humans; D008297:Male; D010147:Pain Measurement; D011187:Posture / Q000502:physiology; D034941:Upper Extremity / Q000502:physiology*
keywords: ISO 9241-9:2000; computer input devices; mouse evaluation; upper limb disorders