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NCT Number: NCT07541963

Investigation of the Effect of Screen Time Before Sleep on Posture Disorders and Dynamic Balance

The widespread use of electronic devices such as smartphones, tablets, and laptops has significantly increased screen exposure, especially before sleep. Prolonged screen use may contribute to poor posture by promoting forward head posture, rounded shoulders, and other musculoskeletal problems. In addition, screen exposure before sleep may negatively affect sleep quality and neuromuscular performance, which may in turn influence postural control and balance.

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Key information

Conditions

Postural Disorders Balance Problems

Age range

18 year–35 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Saglik Bilimleri Universitesi

Istanbul, Üsküdar, 34668, Turkey (Türkiye)

Location contact

Esra Pehlivan, Associate Professor

CONTACT

[email protected]

02164189616

About this study

Postural disorders arise from the disruption of the natural alignment of the spine and are often associated with muscle imbalances, joint stress, and pain. Incorrect posture caused by prolonged technology use has been reported to increase the risk of musculoskeletal problems among young adults.

Dynamic balance is an important component of postural control and is influenced by the integration of sensory input and neuromuscular responses. Sleep disturbances and lifestyle habits, including excessive screen exposure before sleep, may affect this complex system.

Therefore, the aim of this study is to investigate the effect of screen time before sleep on posture disorders and dynamic balance in healthy young adults. Participants aged between 18 and 35 years will be evaluated for screen usage habits before sleep. Posture analysis and the Star Excursion Balance Test will be used to assess posture alignment and dynamic balance performance.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Healthy adults
  • Aged 18 to 35 years
  • Willing to participate voluntarily in the study

Exclusion criteria

  • History of orthopedic injury or surgery affecting balance
  • Use of medications that may affect attention or balance
  • Refusal to provide informed consent

Treatment and study plan

Pre-sleep screen exposure assessment

Other

Pre-sleep screen exposure is evaluated using smartphone-based self-reported queries on duration and usage characteristics

Primary outcomes

  1. Posture Analysis

    Time frame: Single assessment at baseline

    Evaluation of body alignment including head position, shoulder alignment, spinal curvature, pelvic position, knee alignment, and foot posture from anterior, posterior, and lateral views.

Secondary outcomes

  1. Star Excursion Balance Test

    Time frame: Single assessment at baseline

    Dynamic balance performance will be assessed by measuring the maximum reach distance in eight directions while maintaining single-leg stance.

  2. Duration of pre-sleep screen exposure

    Time frame: Single assessment at baseline

    The duration of screen exposure within 1 hour before bedtime will be assessed using self-report and recorded in minutes. Higher values indicate longer screen exposure before sleep.

Study contacts

Contact information is provided by the study sponsor or research team.

Esra Pehlivan

CONTACT

[email protected]

0 216 777 8 777

Rumeysa Yanak

CONTACT

[email protected]

02167779600

Sponsors and collaborators

Lead sponsor

Saglik Bilimleri Universitesi

Other

Registry information

Important dates

Study start
2026
Primary completion
2027
Study completion
2027
First posted
Apr 21, 2026
Registry last updated
Apr 27, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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