Effects of Physical Therapy on Isometric Neck Retraction Strength and Pain in Patients With Neck Disability
Public ClinicalTrials.gov record NCT04334655. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
Impaired neck muscle strength is related to neck pain, abnormal posture, and various cervical pathologies. Clinicians, therefore require objective, reliable and valid methods for quantifying neck strength. In a previous study, the investigators developed a novel, valid, and reliable method for measuring neck retraction strength, using a handheld dynamometer (HHD), in normal, healthy individuals. The investigators are now expanding this research to study a patient population. Specifically, to describe isometric neck retraction strength in patients with neck pain and to study the effects of physical therapy (PT) on that strength. Our hypothesis is that isometric cervical retraction strength will increase over the course of treatment and that there will be an inverse relationship between strength and the Numeric Pain Rating Scale (NPRS) and Neck Disability Index (NDI).
Study identification
- NCT ID
- NCT04334655
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 25 participants
Conditions and interventions
Eligibility (public fields only)
- Age range
- 18 Years to 100 Years
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Feb 29, 2020
- Primary completion
- Oct 22, 2021
- Completion
- Oct 22, 2021
- Last update posted
- May 1, 2022
2020 – 2021
United States locations
- U.S. sites
- 4
- U.S. states
- 3
- U.S. cities
- 4
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Integral Physical Therapy | Firestone | Colorado | 80504 | — |
| Performance PT | Cos Cob | Connecticut | 06807 | — |
| Connecticut Physical Therapy Specialists | Granby | Connecticut | 06035 | — |
| Back in Action | Holly Springs | North Carolina | 27540 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04334655, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted May 1, 2022 · Synced Sep 5, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04334655 live on ClinicalTrials.gov.