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Smartphone Addiction, Posture and Breathing Control in University Students

Effects of Smartphone Addiction on Posture and Breathing Control in University Students: The Role of Physical Activity and Demographic Factors

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07615322
Enrollment
300
Registered
2026-05-29
Start date
2026-04-05
Completion date
2026-06-20
Last updated
2026-05-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Dysfunctional Breathing, Postural Disorders, Smartphone Addiction

Keywords

smartphone addiction, posture, breathing control

Brief 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. 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.

Interventions

OTHERObservational Assessment

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.

Sponsors

Istanbul Medeniyet University
Lead SponsorOTHER

Study design

Observational model
OTHER
Time perspective
CROSS_SECTIONAL

Eligibility

Sex/Gender
ALL
Age
18 Years to 35 Years
Healthy volunteers
Yes

Inclusion criteria

* 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

Exclusion criteria

* • History of fracture * Cardiovascular disease * Pulmonary disease * Neurological or orthopedic disorders affecting posture or breathing * Inability to understand instructions

Design outcomes

Primary

MeasureTime frameDescription
Presence of postural problemsbaselinePosture will be evaluated using the New York Posture Rating Chart (NYPRC). Participants will be categorized according to posture status. Lower scores indicate poorer posture.

Secondary

MeasureTime frameDescription
Smartphone addiction severityBaselineSmartphone addiction severity will be assessed using the Smartphone Addiction Scale-Short Form (SAS-SV). Higher scores indicate greater smartphone addiction.
Breathing controlbaselineBreathing control and dysfunctional breathing symptoms will be evaluated using the Self Evaluation of Breathing Questionnaire (SEBQ). Higher scores indicate greater dysfunctional breathing symptoms.

Countries

Turkey (Türkiye)

Contacts

PRINCIPAL_INVESTIGATOREMEL METE

Istanbul Medeniyet University

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 30, 2026