Trial · NCT07907549
Content Interest, Neck Posture, and Discomfort During Smartphone Use
NCT07907549, Not applicable, Not yet recruiting, Karabuk University
3 sourcestrials-2026-11-12-0.5.0
Cite this record
ConductScience Library. Content Interest, Neck Posture, and Discomfort During Smartphone Use. Trials, record NCT07907549. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT07907549
On this page
Trial
As registered on ClinicalTrials.gov, in the graph's capture of the registry.
- Title
- Content Interest, Neck Posture, and Discomfort During Smartphone Use
- NCT number
- NCT07907549
- Status
- Not yet recruiting
- Phases
- Not applicable
- Enrollment
- 100 participants, estimated
- Lead sponsor
- Karabuk University
- Conditions
- Neck Discomfort During Smartphone Use
- Interventions
- Preferred/High-Interest Smartphone Video Viewing, Neutral/Lower-Interest Smartphone Video Viewing
- First posted
- 2026-10-30
- Last updated
- 2026-10-30
Source ClinicalTrials.gov
Registered outcomes9
Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.
| List | Outcome | Time frame | Description |
|---|---|---|---|
| Primary | Neck Discomfort at Minute 30 | At minute 30 of each of two sessions, separated by 48-72 hours | Perceived neck discomfort measured with the 0-10 Borg CR-10 discomfort scale, where 0 indicates no discomfort and higher scores indicate greater discomfort. The primary endpoint is the within-participant difference between preferred/high-interest and neutral/lower-interest content conditions at minute 30. |
| Secondary | Neck Discomfort Over Time | Baseline and minutes 10, 20, and 30 in each session; sessions 48-72 hours apart | Repeated perceived neck discomfort on the 0-10 Borg CR-10 scale. Higher values indicate greater discomfort. |
| Secondary | Right and Left Shoulder Discomfort | Baseline and minutes 10, 20, and 30 in each session; sessions 48-72 hours apart | Right and left shoulder discomfort measured separately using the 0-10 Borg CR-10 scale. Higher values indicate greater discomfort; sides are analyzed separately. |
| Secondary | Neck Flexion Angle | Minutes 0, 5, 10, 15, 20, 25, and 30 of each session; sessions 48-72 hours apart | Sagittal neck flexion angle in degrees between the tragus-C7 line and vertical, measured from standardized video frames using Kinovea. |
| Secondary | Trunk Angle | Minutes 0, 5, 10, 15, 20, 25, and 30 of each session; sessions 48-72 hours apart | Sagittal trunk angle in degrees formed by the C7-T12 and T12-greater trochanter lines, measured using Kinovea from standardized video frames. |
| Secondary | Task Engagement and Flow | Immediately after each 30-minute session; sessions 48-72 hours apart | Task engagement and flow assessed with the Turkish Flow Short Scale. The flow score reflects absorption and fluency during the video-viewing task; higher flow scores indicate greater flow experience. |
| Secondary | Interest and Enjoyment | Immediately after each 30-minute session; sessions 48-72 hours apart | Interest/enjoyment assessed with the interest/enjoyment subscale of the Turkish Intrinsic Motivation Inventory. Higher scores indicate greater intrinsic interest and enjoyment; used as a manipulation check. |
| Secondary | Emotional Valence and Arousal | Immediately after each 30-minute session; sessions 48-72 hours apart | Self-Assessment Manikin pictorial ratings of emotional valence and arousal, reported separately. Valence reflects unpleasant-to-pleasant affect; arousal reflects calm-to-excited activation. Used to characterize the emotional response to content. |
| Other | Pressure Pain Threshold | Before and immediately after each 30-minute session; sessions separated by 48-72 hours | Exploratory mechanistic outcome measured in kPa with calibrated digital algometry at the right and left upper trapezius and dominant tibialis anterior. A 1 cm2 probe is applied perpendicular to the skin at approximately 30 kPa/s until first pain. Three readings per site are averaged, with 30-60 seconds between readings. Higher values indicate lower pressure pain sensitivity. Sites are analyzed separately. |
Source ClinicalTrials.gov
Outcomes0
Each outcome the trial posted results for, in ClinicalTrials.gov's words.
None in this release.
Results by group0
Each measurement the trial posted, group by group, in the words and numbers it posted.
None in this release.
Participant flow0
How many started, completed or left each group, period by period.
None in this release.
Adverse events0
Each adverse event the trial posted, group by group: the participants affected out of those at risk.
None in this release.
Adverse event totals0
The totals the trial posted for each group.
None in this release.
Papers0
The papers the trial lists on ClinicalTrials.gov.
None in this release.
Grants0
The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.
None in this release.
Trial comparisons0
Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.
None in this release.
Tests0
The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.
None in this release.
Data dates
The day each source was copied for this release.
Sources 3
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
- NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
- NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.
For software
Read this trial from software.
The record and each of its lists are JSON, twenty rows a page. No key.
GET https://conductscience.org/api/trials/v1/NCT07907549
GET https://conductscience.org/api/trials/v1/NCT07907549/registered