Healthy subject
Conditions
Interventions
Participants were instructed using smartphone in appropriated arm posture (30 degrees shoulder flexion) without any support,The innovative ergonomics device is the novel device for improving the neck
the user attaches the supported socket part with his/her belt both left and right sides and then adjusts the height level of a device where the user can see the screen clearly
Non-
using,Innovative ergonomic device using
Sponsors
Research Center in Back, Neck, Other Joint Pain and Human Performance, Khon Kaen University
Research Center in Back,
Neck,
Other Joint Pain and Human Performance,
Khon Kaen University
Eligibility
Sex/Gender
All
Age
18 Years to 25 Years
Inclusion criteria
Inclusion criteria: 1. They are healthy young adult aged between 18-25 years. 2. They have at least 6 month s experience in smartphone using. 3. They use of their smartphone daily at least 2 hours per day. 4. They are right hand dominant and prefer to use dual handed text entry.
Exclusion criteria
Exclusion criteria: 1. They have any history of traumatic injuries or surgical interventions of relevant regions within the past year. 2. They have chronic diseases affecting musculoskeletal systems such as rheumatoid arthritis osteoarthritis and other connective tissue disorders. 3. They have visual problems which cannot be corrected by glasses dizziness and vertigo. 4. They had taken any sedative drug or alcohol within the past 48 hours.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Neck and shoulder muscle activity 20 minutes during smartphone texting Surface electromyography,Neck and shoulder muscle fatigue 20 minutes during smartphone texting Neck and shoulder muscle activity | — |
Secondary
| Measure | Time frame |
|---|---|
| Neck and shoulder kinematic 202 minutes during smartphone texting 2D video recording and digitizing by Kinovea software,Neck and shoulder discomfort score each time point of 5-minute, 10-minute, 15-minute and 20-minute. scoring on visual analogue scale (VAS) | — |
Countries
Thailand
Contacts
Public ContactWeerasak Tapanya
Research Center in Back, Neck, Other Joint Pain and Human Performance, Khon Kaen University
Outcome results
None listed