Smartphone AddictionNCT07615322
Smartphone Addiction, Posture and Breathing Control in University Students
An observational study of Smartphone Addiction and Postural Disorders, run by Istanbul Medeniyet University at 1 site in Turkey (Türkiye).
Trial summary
The aim of this study is to investigate the effects of smartphone addiction on postural problems and breathing control in healthy university students. Excessive smartphone use has been associated with forward head posture, thoracic postural changes, and musculoskeletal complaints. Read more about this study
- Who is it for?
- Ages 18 to 35 yearsHealthy volunteers can take part
- Conditions the study is for
- Smartphone Addiction, Postural Disorders, Dysfunctional Breathing
- What is being tested?
- Observational Assessment
- How many people
- 300 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- 5 Apr 2026to 20 Jun 2026
- How long will I take part?
- 1 Month
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 35 years
- All sexes
- Healthy volunteers accepted
- Adult
Study population: Healthy university students aged 18-35 years
Who may be able to join
- Age between 18 and 35 years
- Smartphone user
- Ability to stand independently
- Ability to perform activities of daily living independently
- Ability to understand assessment instructions
- Voluntary participation with signed informed consent
Who cannot join
- • History of fracture
- Cardiovascular disease
- Pulmonary disease
- Neurological or orthopedic disorders affecting posture or breathing
- Inability to understand instructions
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Turkey (Türkiye)1 site, 1 recruiting
- Recruiting
Emel Mete
Maltepe, Istanbul, (537) 609-6265
EMEL METE, 05376096265, meteemel53@gmail.com
Reyhan Kaygusuz, PhD
About this study
Official title: Effects of Smartphone Addiction on Posture and Breathing Control in University Students: The Role of Physical Activity and Demographic Factors
The aim of this study is to investigate the effects of smartphone addiction on postural problems and breathing control in healthy university students.
Excessive smartphone use has been associated with forward head posture, thoracic postural changes, and musculoskeletal complaints. These postural alterations may negatively influence respiratory biomechanics and breathing control. However, the relationship between smartphone addiction, postural deterioration, and dysfunctional breathing symptoms has not been comprehensively investigated.
Participants will complete questionnaires assessing smartphone addiction and breathing control, and posture will be evaluated using the New York Posture Rating Chart. Binary logistic regression analysis will be performed to determine whether smartphone addiction independently predicts postural problems. Additionally, multiple linear regression analyses will be conducted to examine the association between smartphone addiction, posture, and breathing control.
Read the detailed description
This cross-sectional observational study will be conducted between April and September 2026 in healthy university students aged 18-35 years.
Following written informed consent, participants will complete a sociodemographic form including age, sex, body mass index, smoking status, and daily smartphone usage duration.
Smartphone addiction levels will be evaluated using the Smartphone Addiction Scale-Short Form (SAS-SV). Breathing control and dysfunctional breathing symptoms will be assessed using the Self Evaluation of Breathing Questionnaire (SEBQ). Postural assessment will be performed using the New York Posture Rating Chart (NYPRC).
Participants will additionally be categorized according to smartphone addiction status using validated cutoff values for the SAS-SV. Postural status will also be categorized according to NYPRC scores.
Binary logistic regression analysis will be performed to determine whether smartphone addiction is an independent predictor of postural problems. Odds ratios (OR) and 95% confidence intervals (CI) will be reported. Multiple linear regression analysis will additionally be used to examine the relationship between smartphone addiction, posture scores, and breathing control scores while adjusting for potential confounding factors such as age, sex, body mass index, smoking status, and smartphone usage duration.
The study aims to provide evidence regarding the musculoskeletal and respiratory consequences of excessive smartphone use in young adults.
- Being tested
- Observational Assessment
- Keywords
- smartphone addiction, posture, breathing control
- Medical subject headings
- Internet Addiction Disorder
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Observational AssessmentOther
Participants will complete questionnaires assessing smartphone addiction, physical activity level, and breathing control. Postural assessment will be performed using the New York Posture Rating Chart. The study will investigate the association between smartphone addiction, postural problems, and breathing control in university students.
| Study group | Role | What they receive |
|---|---|---|
| Smartphone addiction group | Participants with smartphone addiction according to Smartphone Addiction Scale-Short Form cutoff values. Receives: Other: Observational Assessment | |
| Non-addicted group | Participants without smartphone addiction according to Smartphone Addiction Scale-Short Form cutoff values. Receives: Other: Observational Assessment |
What is being measured
The primary outcome is the main question the study is designed to answer.
Presence of postural problems
Posture will be evaluated using the New York Posture Rating Chart (NYPRC). Participants will be categorized according to posture status. Lower scores indicate poorer posture.
Measured: baseline
Secondary outcomes (2)
Smartphone addiction severity
Smartphone addiction severity will be assessed using the Smartphone Addiction Scale-Short Form (SAS-SV). Higher scores indicate greater smartphone addiction.
Measured: Baseline
Breathing control
Breathing control and dysfunctional breathing symptoms will be evaluated using the Self Evaluation of Breathing Questionnaire (SEBQ). Higher scores indicate greater dysfunctional breathing symptoms.
Measured: baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 May 2026
- Study start5 Apr 2026
- Primary completion5 Jun 2026 (estimated)
- Study completion20 Jun 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Smartphone AddictionStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 300 participants (estimated)
- Target duration
- 1 Month
Sponsor and investigators
- Lead sponsor
- Istanbul Medeniyet University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Emel Mete, Istanbul Medeniyet University
- Investigators
- EMEL METE, Principal investigator, Istanbul Medeniyet University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07615322
- Sponsor's protocol ID
- SMARTPOSTURE
- Status last verified
- May 2026
- First submitted
- 22 May 2026
- Last updated
- 29 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 29 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Smartphone Addiction on Posture and Breathing Control in University Students: The Role of Physical Activity and Demographic Factors
- ClinicalTrials.gov ID
- NCT07615322
- Acronym / sponsor ID
- SMARTPOSTURE
- Keywords
- smartphone addiction, posture, breathing control
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 300 participants (estimated)
- Lead sponsor
- Istanbul Medeniyet UniversityUniversity, hospital or other
- Study start
- 5 Apr 2026 (actual)
- Primary completion
- 5 Jun 2026 (estimated)
- Study completion
- 20 Jun 2026 (estimated)
- First posted
- 29 May 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The aim of this study is to investigate the effects of smartphone addiction on postural problems and breathing control in healthy university students.
Excessive smartphone use has been associated with forward head posture, thoracic postural changes, and musculoskeletal complaints. These postural alterations may negatively influence respiratory biomechanics and breathing control. However, the relationship between smartphone addiction, postural deterioration, and dysfunctional breathing symptoms has not been comprehensively investigated.
Participants will complete questionnaires assessing smartphone addiction and breathing control, and posture will be evaluated using the New York Posture Rating Chart. Binary logistic regression analysis will be performed to determine whether smartphone addiction independently predicts postural problems. Additionally, multiple linear regression analyses will be conducted to examine the association between smartphone addiction, posture, and breathing control.
Detailed description
This cross-sectional observational study will be conducted between April and September 2026 in healthy university students aged 18-35 years.
Following written informed consent, participants will complete a sociodemographic form including age, sex, body mass index, smoking status, and daily smartphone usage duration.
Smartphone addiction levels will be evaluated using the Smartphone Addiction Scale-Short Form (SAS-SV). Breathing control and dysfunctional breathing symptoms will be assessed using the Self Evaluation of Breathing Questionnaire (SEBQ). Postural assessment will be performed using the New York Posture Rating Chart (NYPRC).
Participants will additionally be categorized according to smartphone addiction status using validated cutoff values for the SAS-SV. Postural status will also be categorized according to NYPRC scores.
Binary logistic regression analysis will be performed to determine whether smartphone addiction is an independent predictor of postural problems. Odds ratios (OR) and 95% confidence intervals (CI) will be reported. Multiple linear regression analysis will additionally be used to examine the relationship between smartphone addiction, posture scores, and breathing control scores while adjusting for potential confounding factors such as age, sex, body mass index, smoking status, and smartphone usage duration.
The study aims to provide evidence regarding the musculoskeletal and respiratory consequences of excessive smartphone use in young adults.
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
- Target follow-up
- 1 Month
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Smartphone addiction group | – | Other: Observational AssessmentParticipants with smartphone addiction according to Smartphone Addiction Scale-Short Form cutoff values. |
| Non-addicted group | – | Other: Observational AssessmentParticipants without smartphone addiction according to Smartphone Addiction Scale-Short Form cutoff values. |
Who may qualify
- Ages
- 18 to 35 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- Healthy university students aged 18-35 years
Key inclusion criteria (6 listed)
- Age between 18 and 35 years
- Smartphone user
- Ability to stand independently
- Ability to perform activities of daily living independently
- Ability to understand assessment instructions
Key exclusion criteria (5 listed)
- • History of fracture
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Observational AssessmentParticipants will complete questionnaires assessing smartphone addiction, physical activity level, and breathing control. Postural assessment will be performed using the New York Posture Rating Chart. The study will investigate the association between smartphone addiction, postural problems, and breathing control in university students. | Other | Non-addicted group, Smartphone addiction group |
Primary outcome
Presence of postural problems
Time frame: baseline
Posture will be evaluated using the New York Posture Rating Chart (NYPRC). Participants will be categorized according to posture status. Lower scores indicate poorer posture.
2 secondary outcomes
Smartphone addiction severity
Time frame: Baseline
Breathing control
Time frame: baseline
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 May 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
EMEL METE principal investigator
Istanbul Medeniyet University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Smartphone Addiction and Postural Disorders, run by Istanbul Medeniyet University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 6 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 29 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Each site lists its own contact: choose the nearest one under Trial locations. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Presence of postural problems (time frame: baseline). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 29 May 2026.