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Completed

NCT Number: NCT07094490

Comparison of Posture and Respiration in Adults With and Without Head Forward Posture

Forward head posture (FHP) is defined as the position in which the head is in front of the shoulder and is one of the most common musculoskeletal problems caused by increasing computer and smartphone use. This study aims to compare spinal alignment, pulmonary function, and respiratory muscle strength between individuals with and without FHP.

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Key information

Conditions

Forward Head Posture

Age range

18 year–35 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Nigde Omer Halisdemir University

Niğde, Niğde Province, 51200, Turkey (Türkiye)

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • aged 18-35

Exclusion criteria

  • presence of diagnosed respiratory, neurological, orthopedic, psychiatric, or cardiac conditions; any limitations that could interfere with assessments; pregnancy or breastfeeding; a history of neck trauma; and previous surgery involving the neck or lower back

Treatment and study plan

Primary outcomes

  1. Pulmonary Function Tests- FEV1/FVC

    Time frame: baseline

    The person will be asked to take a few normal breaths followed by as deep a breath as possible and instructed to exhale forcefully and quickly without waiting. The test will be terminated by instructing the participant to take a deep breath after exhaling for at least six seconds.

  2. Pulmonary Function Tests- FVC

    Time frame: baseline

    The person will be asked to take a few normal breaths, then take as deep a breath as possible, and then exhale forcefully and quickly without waiting. The test will be terminated by instructing the participant to take a deep breath after exhaling for at least six seconds.

  3. Pulmonary Function Tests- FEV1

    Time frame: baseline

    The person will be asked to take a few normal breaths, then take as deep a breath as possible, and then exhale forcefully and quickly without waiting. The test will be terminated by instructing the participant to take a deep breath after exhaling for at least six seconds.

  4. Pulmonary Function Tests- PEF

    Time frame: Baseline

    The person will be asked to take a few normal breaths, then take as deep a breath as possible, and then exhale forcefully and quickly without waiting. The test will be terminated by instructing the participant to take a deep breath after exhaling for at least six seconds.

  5. Respiratory Muscle Strength- MIP

    Time frame: Baseline

    For the MIP assessment, participants were instructed to perform a rapid and forceful inspiration following a maximal expiration. Each maneuver was sustained for at least 2-3 seconds.

  6. Respiratory Muscle Strength- MEP

    Time frame: Baseline

    For MEP assessment, they were asked to exhale rapidly and forcefully following maximal inspiration. Each maneuver was sustained for at least 2-3 seconds.

  7. Posture- Sagittal head angle

    Time frame: Baseline

    The Sagittal head angle is defined as the angle formed between a line passing through the canthus and the tragus and a horizontal line.

  8. Posture-Craniovertebral angle

    Time frame: baseline

    Craniovertebral angle is defined as the angle formed by the intersection of a line connecting the spinous process of C7 to the tragus of the ear and a horizontal line.

  9. Posture- Sagittal shoulder angle

    Time frame: Baseline

    Sagittal shoulder angle is the angle formed between a horizontal line passing through the midpoint of the humerus and a line connecting the midpoint of the humerus to the spinous process of C7

  10. Posture- Kyphosis

    Time frame: Baseline

    Thoracic kyphosis angle was determined by measuring the angles between the spinous processes of the 1st-2nd Thoracic (T1-T2) vertebrae and the 12th Thoracic-1st Lumbar (T12-L1) vertebrae using the inclinometer.

  11. Posture- Lordosis

    Time frame: Baseline

    Lumbar lordosis angle was determined by measuring the angles between the spinous processes of the T12-L1 and 2nd-3rd Sacral (S2-S3) vertebrae.

Sponsors and collaborators

Lead sponsor

Nigde Omer Halisdemir University

Other

Registry information

Important dates

Study start
2024
Primary completion
2025
Study completion
2025
First posted
Jul 30, 2025
Registry last updated
Jul 30, 2025

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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