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

NCT07094490 | Completed

• 1 other identifier: E-86837521-050.99-579759
• Study Type: observational
• Target: 100
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

Forward Head Posture

Outcome Measures

Primary Outcomes (11)

• Pulmonary Function Tests- FEV1/FVC

  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.

  baseline

• Pulmonary Function Tests- FVC

  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.

  baseline

• Pulmonary Function Tests- FEV1

  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.

  baseline

• Pulmonary Function Tests- PEF

  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.

  Baseline

• Respiratory Muscle Strength- MIP

  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.

  Baseline

• Respiratory Muscle Strength- MEP

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

  Baseline

• Posture- Sagittal head angle

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

  Baseline

• Posture-Craniovertebral angle

  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.

  baseline

• Posture- Sagittal shoulder angle

  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

  Baseline

• Posture- Kyphosis

  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.

  Baseline

• Posture- Lordosis

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

  Baseline

Study Arms (2)

FHP

participants with a craniocervical angle ≤ 50°

control

participants with a craniocervical angle \> 50°

Eligibility Criteria

• Age: 18 Years - 35 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)
• Sampling Method: Non-Probability Sample

Study Population

Participants with a CVA of 50 degrees and less than 50 degrees will be included in the head forward posture group, and participants with a CVA above 50 degrees will be included in the control group.

You may qualify if:

• aged 18-35

You may not qualify if:

• 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

Sponsors & Collaborators

• Nigde Omer Halisdemir University: lead

Study Sites (1)

Nigde Omer Halisdemir University

Niğde, Niğde Province, 51200, Turkey (Türkiye)

Location

Study Officials

• Gürkan Demirtaş, PhD

  Niğde Ömer Halisdemir Üniversitesi

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: observational
• Observational Model: CASE CONTROL
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: PhD

Study Record Dates

• First Submitted: July 23, 2025
• First Posted: July 30, 2025
• Study Start: November 8, 2024
• Primary Completion: January 8, 2025
• Study Completion: January 8, 2025
• Last Updated: July 30, 2025

Record last verified: 2025-07

Data Sharing

• IPD Sharing: Will not share

Locations

TU (1)