NCT00184535

Brief Summary

Delayed anticipatory muscle activity response in deep low back and abdominal muscles has been observed in patients with low back pain, indicative of a pathological condition. Muscle activity onset is traditionally recorded by intramuscular electromyography, but there is a need for a less cumbersome recording method in large clinical studies. The purpose of this experimental study is to explore whether high-frame rate m-mode ultrasound and tissue velocity imaging could measure anticipatory muscle responses ("onset") in the abdominal muscles reliably and comparably accurate to intramuscular EMG.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
10

participants targeted

Target at below P25 for all trials

Timeline
Completed

Started Jul 2005

Shorter than P25 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

July 1, 2005

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

September 15, 2005

Completed
1 day until next milestone

First Posted

Study publicly available on registry

September 16, 2005

Completed
15 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

October 1, 2005

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

October 1, 2005

Completed
Last Updated

September 25, 2017

Status Verified

September 1, 2017

Enrollment Period

3 months

First QC Date

September 15, 2005

Last Update Submit

September 20, 2017

Conditions

Low Back Pain

Keywords

Low back painNeuromuscular controlAnticipatory motor controlMusculoskeletal Physiologic ProcessesMuscle, SkeletalUltrasonographyElectromyography

Eligibility Criteria

Age30 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Healthy men and women between 30-65 yrs with no recent low back pain

You may qualify if:

  • Healthy
  • yrs

You may not qualify if:

  • recent low back pain
  • low back, neck or shoulder pain inflicting work absence or bed rest
  • cardiac, rheumatic or other serious illness
  • pregnancy

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Norwegian University of Science and Technology (NTNU), Nasjonal senter for spinale lidelser

Trondheim, 7489, Norway

Location

Related Publications (1)

  • Vasseljen O, Dahl HH, Mork PJ, Torp HG. Muscle activity onset in the lumbar multifidus muscle recorded simultaneously by ultrasound imaging and intramuscular electromyography. Clin Biomech (Bristol). 2006 Nov;21(9):905-13. doi: 10.1016/j.clinbiomech.2006.05.003. Epub 2006 Jul 5.

    PMID: 16822599RESULT

MeSH Terms

Conditions

Low Back Pain

Condition Hierarchy (Ancestors)

Back PainPainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and Symptoms

Study Officials

  • Ottar Vasseljen, PhD

    Norw. Univ of Sci and Technol

    STUDY CHAIR

Study Design

Study Type
observational
Observational Model
CASE ONLY
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

September 15, 2005

First Posted

September 16, 2005

Study Start

July 1, 2005

Primary Completion

October 1, 2005

Study Completion

October 1, 2005

Last Updated

September 25, 2017

Record last verified: 2017-09

Locations

NO(1)