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CompletedNCT02864732Updated Aug 22, 2023Results posted

Stabilization Exercises Alone vs Stabilization Exercises Plus Neuromuscular Electrical Stimulation in People With Chronic Low Back Pain

An interventional study of Rehabilitation exercises and Electrical Stimulation in Low Back Pain, sponsored by University of Pittsburgh. Completed. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2023-08-22.

Sponsored by University of Pittsburgh · Not applicable, Interventional, and Other

Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

The purpose of this study is to investigate the feasibility of applying neuromuscular electrical stimulation on the lumbar spine, to report how tolerable the intervention is, and whether the electrical stimulation improve pain, function and muscle strength.

02

Conditions studied

  • Low Back Pain

Keywords

  • Low back pain
  • stabilization exercises
  • neuromuscular electrical stimulation
03

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 30 is below the median of 60 across 1,941 interventional studies indexed under Back Pain.

Browse Back Pain studies →

Lead sponsor

University of Pittsburgh is the lead sponsor of 1,385 studies on the registry; 167 are open to participants now.

Of its 8 completed or terminated interventional studies of FDA-regulated products, 4 (50%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Between 18 years of age and 60.
  • Body Mass Index (BMI) of less than 34.
  • Low Back Pain duration of 3 months or greater (chronic).
  • Minimum pain level on Numeric Pain Rating Scale (NPRS) is 3 or greater.
  • Minimum score of Modified Oswestry Disability Questionnaire (MODQ) is 20 or greater.
  • Understands English

Exclusion criteria

Exclusion Criteria:

  • Positive nerve root tension signs
  • Progressive neurological deficit
  • Positive Babinski sign.
  • Sensory loss that is not in correspondence with dermatomal distribution or peripheral nerves.
  • History of spinal surgery
  • History of inflammatory joint disease
  • Contraindications to physical exercise including history of cardiac disease or being told by a physician not to engage in physical exercise.
  • Contraindications to NMES including cardiac pacemaker or skin allergy to adhesives
  • History of metastatic cancer in previous 5 years or present treatment for cancer
  • Women who indicate that they are pregnant or plan to become pregnant
05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
30 participants (actual)

Study arms

  • Experimental
    Stabilization exercises

    The stabilization exercises program will consist of exercises for the lower back and abdomen. These exercises include various types of abdominal bracing and bridging and side bridging. The exercises will be performed in supine, sidelying, and quadruped. It involves activation of muscles, dissociation of lumbar spine movement from extremities movement and endurance.

    Other: Rehabilitation exercises

  • Experimental
    Stabilization exercises plus electrical stimulation

    The neuromuscular electrical stimulation is a hand-size unit that has four plastic adhesive electrical conductors known as electrodes. These electrodes are going to be placed on the skin covering the lower back muscles. They will deliver an electric current that will generate muscle contraction that resembles normal muscle contraction. This treatment will be given in addition to the stabilization exercise program.

    Other: Rehabilitation exercises · Device: Electrical Stimulation

Interventions

  • OtherRehabilitation exercises
  • DeviceElectrical Stimulation

    Also known as: Neuromuscular Electrical Stimulation (NMES)

06

What researchers measure

Primary outcomes

  1. Tolerability of Electrical Stimulation (NMES)

    NMES tolerability was performed by asking each subject in the stab + NMES group to describe their subjective perception of both the intensity and discomfort of the NMES current using the descriptors listed in a table. The descriptors represent two distinct domains of adjectives: the sensory aspect of the perceived intensity of stimulation and the affective aspect of the perceived discomfort. Each aspect has 15 adjectives. Each subject was asked to describe the current using the descriptors listed for each aspect at baseline and at 6 weeks. To analyze the the subjects description of the current, the 15 descriptors of each aspect were divided into 3 zones (high, medium, low). The top 5 descriptors in each aspect were considered high, the middle 5 descriptors were considered medium, and the bottom descriptors were considered low. Descriptive statistics were used to compare the subjects description of each aspect at baseline and at 6 weeks follow-up.

    Time frame: Participants were followed from baseline to 6 weeks

  2. Modified Oswestry Disability Questionnaire (MODQ)

    The MODQ is a self-reported measure of disability consisting of 10 domains of functional activities related to low back pain. The domains include pain intensity, personal care, lifting, walking, standing, sitting, traveling, social life, employment/homemaking, and sleeping. Each domain is rated from 0 - 5. The total of all the domains range from 0 - 50. The scores can be multiplied by 2 to get a percentage of functional disability. The higher the percentage the higher the disability.

    Time frame: Baseline to 6 weeks (post-treatment) to 10 weeks (follow up).

Secondary outcomes

  1. Numeric Pain Rating Scale (NPRS)

    The NPRS measures pain intensity on an 11-point scale from 0 (no pain) to 10 (maximum pain). The higher the score the worst the pain intensity

    Time frame: Baseline to 6 weeks (post-treatment) to 10 weeks (follow-up)

  2. Fear-avoidance Behavior Questionnaire

    The Fear-avoidance Behavior Questionnaire (FABQ) measure avoidant behavior to physical activity or work due to fear of pain. The has two sub scales: physical activity and work. This FABQ consists of 16 items; 5 items for the physical activity sub scale and 11 items for the work subscale. Each item is scored from 0-6. Higher scores on the FABQ are indicative of greater fear and avoidance beliefs. The total score on the FABQ is 66, however, this score is considered separately. The FABQ-physical activity sub scale ranges from 0 - 24 points and the FABQ-work activity ranges from 0 - 42 points.

    Time frame: Baseline to 6 weeks (post-treatment)

  3. Paraspinal Muscle Strength

    The paraspinal muscle strength was assessed using the Biodex 3 Pro dynamometer (20 Ramsey Rd, Shirley, NY 11967). Active extension of the trunk was performed with the subject in a semi-standing position; the subject's hips were flexed at 60 degrees with the feet resting on an adjustable footrest. The thighs were secured to the seat with two Velcro straps. The scapulae rested against a roll that is attached to the chair arms. The trunk was secured with two Velcro straps that crossed the front trunk forming the shape of an X. The subject was asked to extend the trunk by exerting maximal isometric contraction for 5 seconds against the scapular roll. The average of three 5-second trials was recorded. All subjects received the same verbal instruction: "Push your trunk against the scapular roll as strong as you can". The higher the score the stronger the muscles. The range starts from 0 without a limit to the amount of force that could be exerted.

    Time frame: Baseline - 6 weeks (post-treatment)

  4. Patient Satisfaction Survey

    Satisfaction level with the interventions. Subjects were asked rate their satisfaction with the treatment by choosing one of the following statements: Very satisfied Satisfied Neutral Unsatisfied Very unsatisfied

    Time frame: only post-treatment at 6 weeks

07

Results

Posted Nov 6, 2017
Limitations and caveats
small sample size and no blinding

Participant flow

Participant flow — Overall Study
MilestoneStabilization ExercisesStabilization Exercises Plus Electrical Stimulation
Started1515
Completed1313
Not completed22

Outcome measures

PrimaryTolerability of Electrical Stimulation (NMES)

NMES tolerability was performed by asking each subject in the stab + NMES group to describe their subjective perception of both the intensity and discomfort of the NMES current using the descriptors listed in a table. The descriptors represent two distinct domains of adjectives: the sensory aspect of the perceived intensity of stimulation and the affective aspect of the perceived discomfort. Each aspect has 15 adjectives. Each subject was asked to describe the current using the descriptors listed for each aspect at baseline and at 6 weeks. To analyze the the subjects description of the current, the 15 descriptors of each aspect were divided into 3 zones (high, medium, low). The top 5 descriptors in each aspect were considered high, the middle 5 descriptors were considered medium, and the bottom descriptors were considered low. Descriptive statistics were used to compare the subjects description of each aspect at baseline and at 6 weeks follow-up.

Time frame:
Participants were followed from baseline to 6 weeks
Reported as:
Count of participants · Participants
Tolerability of Electrical Stimulation (NMES)
ParticipantsStabilization Exercises Plus Electrical Stimulation
Baseline sensory low0
Baseline sensory medium5
Baseline sensory high8
6 week sensory low0
6 week sensory medium3
6 week sensory high10
Baseline discomfort low13
Baseline discomfort medium0
Baseline discomfort high0
6 week discomfort low13
6 week discomfort medium0
6 week discomfort high0
PrimaryModified Oswestry Disability Questionnaire (MODQ)

The MODQ is a self-reported measure of disability consisting of 10 domains of functional activities related to low back pain. The domains include pain intensity, personal care, lifting, walking, standing, sitting, traveling, social life, employment/homemaking, and sleeping. Each domain is rated from 0 - 5. The total of all the domains range from 0 - 50. The scores can be multiplied by 2 to get a percentage of functional disability. The higher the percentage the higher the disability.

Time frame:
Baseline to 6 weeks (post-treatment) to 10 weeks (follow up).
Reported as:
Mean · percentage of functional disability
Modified Oswestry Disability Questionnaire (MODQ)
percentage of functional disabilityStabilization ExercisesStabilization Exercises Plus Electrical Stimulation
Baseline30.80 ± 10.230.52 ± 7.8
6 weeks12.81 ± 5.214.49 ± 10.2
10 weeks10.00 ± 5.613.24 ± 8.0
SecondaryNumeric Pain Rating Scale (NPRS)

The NPRS measures pain intensity on an 11-point scale from 0 (no pain) to 10 (maximum pain). The higher the score the worst the pain intensity

Time frame:
Baseline to 6 weeks (post-treatment) to 10 weeks (follow-up)
Reported as:
Mean · units on a scale
Numeric Pain Rating Scale (NPRS)
units on a scaleStabilization ExercisesStabilization Exercises Plus Electrical Stimulation
Baseline4.44 ± 1.84.20 ± 1.9
6 weeks2.07 ± 1.12.34 ± 1.5
10 weeks1.63 ± 1.02.34 ± 1.5
SecondaryFear-avoidance Behavior Questionnaire

The Fear-avoidance Behavior Questionnaire (FABQ) measure avoidant behavior to physical activity or work due to fear of pain. The has two sub scales: physical activity and work. This FABQ consists of 16 items; 5 items for the physical activity sub scale and 11 items for the work subscale. Each item is scored from 0-6. Higher scores on the FABQ are indicative of greater fear and avoidance beliefs. The total score on the FABQ is 66, however, this score is considered separately. The FABQ-physical activity sub scale ranges from 0 - 24 points and the FABQ-work activity ranges from 0 - 42 points.

Time frame:
Baseline to 6 weeks (post-treatment)
Reported as:
Mean · units on a scale
Fear-avoidance Behavior Questionnaire
units on a scaleStabilization ExercisesStabilization Exercises Plus Electrical Stimulation
FABQ-PA Baseline12.33 ± 5.514.27 ± 6.5
FABQ-PA 6 weeks8.41 ± 6.010.75 ± 4.7
FABQ-W Baseline12.20 ± 10.911.67 ± 10.5
FABQ-W 6 weeks8.87 ± 9.610.75 ± 7.6
SecondaryParaspinal Muscle Strength

The paraspinal muscle strength was assessed using the Biodex 3 Pro dynamometer (20 Ramsey Rd, Shirley, NY 11967). Active extension of the trunk was performed with the subject in a semi-standing position; the subject's hips were flexed at 60 degrees with the feet resting on an adjustable footrest. The thighs were secured to the seat with two Velcro straps. The scapulae rested against a roll that is attached to the chair arms. The trunk was secured with two Velcro straps that crossed the front trunk forming the shape of an X. The subject was asked to extend the trunk by exerting maximal isometric contraction for 5 seconds against the scapular roll. The average of three 5-second trials was recorded. All subjects received the same verbal instruction: "Push your trunk against the scapular roll as strong as you can". The higher the score the stronger the muscles. The range starts from 0 without a limit to the amount of force that could be exerted.

Time frame:
Baseline - 6 weeks (post-treatment)
Reported as:
Mean · Nm
Paraspinal Muscle Strength
NmStabilization ExercisesStabilization Exercises Plus Electrical Stimulation
Baseline117.29 ± 57.7154.49 ± 59.1
6 weeks162.30 ± 55.2175.80 ± 58.4
SecondaryPatient Satisfaction Survey

Satisfaction level with the interventions. Subjects were asked rate their satisfaction with the treatment by choosing one of the following statements: Very satisfied Satisfied Neutral Unsatisfied Very unsatisfied

Time frame:
only post-treatment at 6 weeks
Reported as:
Count of participants · Participants
Patient Satisfaction Survey
ParticipantsStabilization ExercisesStabilization Exercises Plus Electrical Stimulation
Very satisfied108
Satisfied35
Neutral00
Unsatisfied00
Very Unsatisfied00

Adverse events

Collected over 6 weeks. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Stabilization Exercises—0/15 (0%)0/15 (0%)
Stabilization Exercises Plus Electrical Stimulation—0/15 (0%)0/15 (0%)

Baseline characteristics

Chronic Low Back Pain Patients

Age, Continuous
Age, Continuous(years)Stabilization ExercisesStabilization Exercises Plus Electrical StimulationTotal
Mean38.33 ± 11.333.40 ± 9.035.87 ± 10.15
Sex: Female, Male
Sex: Female, Male(Participants)Stabilization ExercisesStabilization Exercises Plus Electrical StimulationTotal
Female11819
Male4711
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Stabilization ExercisesStabilization Exercises Plus Electrical StimulationTotal
American Indian or Alaska Native000
Asian112
Native Hawaiian or Other Pacific Islander000
Black or African American415
White91322
More than one race000
Unknown or Not Reported101
BMI
BMI(kg/m^2)Stabilization ExercisesStabilization Exercises Plus Electrical StimulationTotal
Mean25.89 ± 3.926.47 ± 2.926.18 ± 3.4
08

Study locations

No study locations are listed for this record.

09

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 22, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02864732
Lead sponsor
University of Pittsburgh
Collaborators
Saudi Arabian Cultural Mission, King Fahad Specialist Hospital Dammam
Responsible party
Sponsor
First posted
Aug 12, 2016
Start date
Jan 2014
Primary completion
Feb 2015
Completion
Feb 2015
Results posted
Nov 6, 2017
Last update
Aug 22, 2023

Study contacts

Muhammad Z Alrwaily, PhD
principal investigator · University of Pittsburgh
Anthony Delitto, PhD
study director · University of Pittsburgh

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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