Back Pain
Conditions
Keywords
Manipulation, Spinal, electromyography, kinetics, kinematic
Brief summary
To characterize muscle activity through electromyography (EMG) of the lumbar spine during high velocity, low amplitude (HVLA) spinal manipulation according to parameters of practitioner contact (location, applied force) in healthy participants and two categories of low back pain participants.
Interventions
PROCEDURESpinal Manipulation
HVLA (High Velocity Low Amplitude) spinal manipulation directed at the lumbar spine and sacroiliac (SI) joints
Sponsors
University of Denver
Study design
Observational model
COHORT
Time perspective
CROSS_SECTIONAL
Eligibility
Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes
Inclusion criteria
* male and female participants ages 18 to 55 years old
Exclusion criteria
Active Worker's Compensation claim related to low back pain episode Active personal injury case related to low back pain episode Currently taking muscle relaxers, steroids, or narcotics * Body mass index \> 30 kg/m2 * Active cancer process * Active infection * Pregnancy * High risk of osteoporosis assessed using the World Health Organization Fracture Risk Assessment Tool (included in submission) * Osteogenic conditions (see screening questionnaire) * Premature menopause * Latex Allergies * Lumbar spine or pelvic surgery * Past spinal trauma producing spinal fracture
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Muscle Response | During spinal manipulation at the time of testing | Muscle activity of the lumbar spinal musculature as measured by both surface and indwelling electromyography. Total response expressed as a percentage of muscles on. |
| Muscle Activity Onset Delay | During spinal manipulation at the time of testing | Muscle activity of the lumbar spinal musculature as measured by both surface and indwelling electromyography. Time delay between the manipulation force and the muscle activity |
Countries
United States
Outcome results
None listed