This study is carried out to investigate postural angles and users' comfort while working with touch screen as compared to standard mouse and touch pad. In this study, 21 right-handed students of SUMS with complete vision and with no musculoskeletal problems participate. In a 80-minute trials, all subjects work with the three above mentioned input devices and do a defined standard task. During the trial, postural angles are measured by motion analysis Qualyisis system. The subjects' perception about comfort and working posture are assessed as well. It is to be noted that all subjects experience all types of interventions. The results obtained while working with the three devices are compared to one another. With-in subject test is used to analyze the data.
General information
Acronym
IRCT registration information
IRCT registration number:IRCT2014113020142N2
Registration date:2014-12-25, 1393/10/04
Registration timing:retrospective
Last update:
Update count:0
Registration date
2014-12-25, 1393/10/04
Registrant information
Name
Alireza Choobineh
Name of organization / entity
School of Public Health, Shiraz University of Medical Sciences
Country
Iran (Islamic Republic of)
Phone
+98 71 3725 1020
Email address
alrchoobin@sums.ac.ir
Recruitment status
Recruitment complete
Funding source
Shiraz University of Medical Sciences
Expected recruitment start date
2014-06-21, 1393/03/31
Expected recruitment end date
2014-12-21, 1393/09/30
Actual recruitment start date
empty
Actual recruitment end date
empty
Trial completion date
empty
Scientific title
posture assessment and comfort measurement while working with different types of computer input devices
Public title
Posture and comfort evaluation in computer users
Purpose
Prevention
Inclusion/Exclusion criteria
]Inclusion criteria: right-handed; healthy vision; no musculoskeletal disorders
Exclusion criteria: left-handed; vision problem; suffering from musculoskeletal disorders
Age
From 18 years old to 30 years old
Gender
Both
Phase
N/A
Groups that have been masked
No information
Sample size
Target sample size:
21
Randomization (investigator's opinion)
N/A
Randomization description
Blinding (investigator's opinion)
Not blinded
Blinding description
Placebo
Not used
Assignment
Single
Other design features
Secondary Ids
empty
Ethics committees
1
Ethics committee
Name of ethics committee
Shiraz University of Medical Sciences
Street address
Zand Street
City
Shiraz
Postal code
Approval date
2013-11-05, 1392/08/14
Ethics committee reference number
CT-92-6761
Health conditions studied
1
Description of health condition studied
Soft tissue disorders
ICD-10 code
M79.9
ICD-10 code description
Soft tissue disorder, unspecified
Primary outcomes
1
Description
Head inclination in Sagital plane
Timepoint
15 minutes
Method of measurement
Qualysis motion analysis system
2
Description
Neck inclination in Sagital plane
Timepoint
During the 15-min trial
Method of measurement
Qualysis motion analysis system
3
Description
Trunk inclination in Sagital plane
Timepoint
During the 15-min trial
Method of measurement
Qualysis motion analysis system
4
Description
Arm angle in Sagital plane
Timepoint
During the 15-min trial
Method of measurement
Qualysis motion analysis system
5
Description
Trunk angle
Timepoint
During the 15-min trial
Method of measurement
Qualysis motion analysis system
6
Description
Elbow angle
Timepoint
During the 15-min trial
Method of measurement
Qualysis motion analysis system
7
Description
Local postural discomfort and pain
Timepoint
At the end of the 15-min trial
Method of measurement
Numerical visual analogue rating scale
8
Description
Subject perception about working posture
Timepoint
At the end of the 15-min trial
Method of measurement
Verbal rationg scale
Secondary outcomes
empty
Intervention groups
1
Description
The intervention is change of computer input device. All subjects experience all interventions. In the lab before the onset of the experiment, each subject complete a demographic questionnaire. Then, the first computer input device is randomly selected and the subject is asked to work with it and do a defined standard task for 15 minutes. During this time the postural angles are measured. After this stage, there is a 10-minute rest time when the subject is asked to judge about working condition and comfort of working with the device. After this period of rest, the second trial begins under identical condition. In this stage, the subject work with the second randomly selected device and do the standard task for 15 minutes and the same procedure is repeated until the third device is also worked with.
Category
N/A
Recruitment centers
1
Recruitment center
Name of recruitment center
School of Rehabilitaion Sciences, Shiraz University of Medical Sciences
Full name of responsible person
Ms Najmeh Kargar
Street address
Chamran Boulevard, School of Rehabilitaion Sciences
City
Shiraz
Sponsors / Funding sources
1
Sponsor
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Dr Sayed Basir Hashemi
Street address
Zand street
City
Shiraz
Grant name
Grant code / Reference number
Is the source of funding the same sponsor organization/entity?
Yes
Title of funding source
Shiraz University of Medical Sciences
Proportion provided by this source
100
Public or private sector
empty
Domestic or foreign origin
empty
Category of foreign source of funding
empty
Country of origin
Type of organization providing the funding
empty
Person responsible for general inquiries
Contact
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Dr Alireza Choobineh
Position
Professor
Other areas of specialty/work
Street address
Behzisty Alley, Kooye Zahra Boulevard
City
Shiraz
Postal code
Phone
+98 71 3725 1020
Fax
Email
alrchoobin@sums.ac.ir
Web page address
Person responsible for scientific inquiries
Contact
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Dr Alireza Choobineh
Position
Professor (PhD)
Other areas of specialty/work
Street address
Behzisty Alley, Kooye Zahra Boulevard
City
Shiraz
Postal code
Phone
+98 71 3725 1020
Fax
Email
alrchoobin@sums.ac.ir
Web page address
Person responsible for updating data
Contact
Name of organization / entity
Shiraz University of Medical Sciences
Full name of responsible person
Dr Alireza Choobineh
Position
Professor (PhD)
Other areas of specialty/work
Street address
Behzisty Alley, Kooye Zahra Boulevard
City
Shiraz
Postal code
Phone
+98 71 3725 1020
Fax
Email
alrchoobin@sums.ac.ir
Web page address
Sharing plan
Deidentified Individual Participant Data Set (IPD)