Relation Between Near Point of Convergence and Postural Stability in Subjects with Non Specific Cervical Pain

A correlation study was conducted to correlate between the convergence insufficiency and postural stability at three different cervical positions in patients with non-specific cervical pain.

Study Overview

• Status: Completed
• Conditions: Neck Pain

Detailed Description

A correlational study was conducted on eighty (male and female) subjects aged between 30-40 years old, presented with chronic NSCP persisted for six months or more, with neck disability index score (NDI) ≥10%, and can possess at least 45° of left and right cervical rotation participated in the study. Convergence insufficiency was evaluated by the near point of conversion (NPOC) rule and postural instability was examined by the Biodex balance system. RESULTS: There was significant positive correlation between (NPOC) and anteroposterior stability index (APSI) at the three cervical positions; neutral, 45° right torsion and 45° left torsion (P>0.05).

• Study Type: Observational
• Enrollment (Actual): 80

Contacts and Locations

Study Locations

• Egypt
  • Cairo
    • Giza, Cairo, Egypt, 12613
      • Faculty of Physical Therapy Cairo University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 30 years to 40 years (Adult)
• Accepts Healthy Volunteers: No

• Sampling Method: Probability Sample

Study Population

Egyptian subjects

Description

Inclusion Criteria:

• Age from 30 to 40 years.
• Chronic cervical pain ( 6 to18 months ago).
• Neck Disability Index (NDI) score ≥10%),
• Move 45° of cervical rotation to both the left and right.

Exclusion Criteria:

-Neuromuscular or musculoskeletal disorders.

Study Plan

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Stability index	Antero-posterior and mediolateral stability index	during the procedure
The near point of convergence (NPOC)	The near point of convergence (NPOC) measured by NPOC rule	during the procedure
The CROM	cervical flexion, extension, rotation and lateral flexion	during the procedure

Collaborators and Investigators

• Sponsor: Cairo University
• Investigators: Study Director: Wael Shendy, PhD, Cairo University

Study record dates

Study Major Dates

• Study Start (Actual): June 15, 2018
• Primary Completion (Actual): January 20, 2019
• Study Completion (Actual): May 10, 2020

Study Registration Dates

• First Submitted: February 19, 2021
• First Submitted That Met QC Criteria: February 22, 2021
• First Posted (Actual): February 23, 2021

Study Record Updates

• Last Update Posted (Estimated): November 1, 2024
• Last Update Submitted That Met QC Criteria: October 31, 2024
• Last Verified: February 1, 2021

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pain; Neurologic Manifestations; Neck Pain
• Other Study ID Numbers: P.T. REC/012/001842

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No