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CompletedNCT00184535Updated Sep 25, 2017

Recording Methods of Muscle Activity "Onset".

An observational study in Low Back Pain, sponsored by Norwegian University of Science and Technology. Completed at 1 site in Norway. Open to participants aged 30 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2017-09-25.

Sponsored by Norwegian University of Science and Technology · Observational

Study type
Observational
Model
Case-only
Time perspective
Cross-sectional
Enrollment
10
Ages
30 Years to 65 Years
Sex
All
01

Study 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.

02

Conditions studied

  • Low Back Pain

Keywords

  • Low back pain
  • Neuromuscular control
  • Anticipatory motor control
  • Musculoskeletal Physiologic Processes
  • Muscle, Skeletal
  • Ultrasonography
  • Electromyography
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In context

Back Pain

2,373 studies on the registry are indexed under Back Pain; 284 are open to participants now.

This study's enrollment of 10 is below the median of 100 across 357 observational studies indexed under Back Pain.

Browse Back Pain studies →

Lead sponsor

Norwegian University of Science and Technology is the lead sponsor of 487 studies on the registry; 52 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
30 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

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

Inclusion criteria

  • Healthy
  • 30-65 yrs

Exclusion criteria

Exclusion Criteria:

  • recent low back pain
  • low back, neck or shoulder pain inflicting work absence or bed rest
  • cardiac, rheumatic or other serious illness
  • pregnancy
05

Study design

Observational model
Case-only
Time perspective
Cross-sectional
Enrollment
10 participants (actual)
06

Study locations

1 site
  • Norwegian University of Science and Technology (NTNU), Nasjonal senter for spinale lidelser
    Trondheim, 7489, Norway
07

References and documents

Publications

  • 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. PubMed 16822599 ↗
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 25, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00184535
Lead sponsor
Norwegian University of Science and Technology
Collaborators
Norwegian Fund for Postgraduate Training in Physiotherapy
Responsible party
Sponsor
First posted
Sep 16, 2005
Start date
Jul 2005
Primary completion
Oct 2005
Completion
Oct 2005
Last update
Sep 25, 2017

Study contacts

Ottar Vasseljen, PhD
study chair · Norw. Univ of Sci and Technol

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2017. You cannot join it, but the record below documents what was studied.

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