Heart Rate Variability Modulation Following a Manipulation in Pain Free Patients Versus Patients in Pain
NCT ID: NCT00740558
Last Updated: 2008-08-27
Study Results
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Basic Information
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COMPLETED
NA
53 participants
INTERVENTIONAL
2004-07-31
2006-07-31
Brief Summary
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The purpose of this study was to examine the heart rate variability (HRV) in the presence or the absence of pain in the lower back (L5), while receiving chiropractic care.
Methods
A total of 53 healthy participants were randomly assigned to a control, 2 treatment or 2 sham groups (n = 10 per group). Participants underwent an eight-minute acclimatizing period. The HRV tachygram (RR interval) data were recorded directly into a Suunto watch (model T6). The investigators analyzed the five minute pre-treatment and post treatments intervals. The spectral analysis of the tachygram was performed with the Kubios Software (University of Kuopio, Finland).
Detailed Description
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In the human model, several investigations have been done to measure modifications of the heart rate variability (HRV) following cervical 8 and thoracic manipulations 9 or in a multisite clinical study 10 where details of the manipulation site were not provided. The site of interest for the chiropractic intervention was defined at the level of the lumbar spine, left and right L-5. This site was selected because most studies 8-10 measuring HRV have used the cervical or thoracic component of the spine. The effect of the lumbar parasympathetic nervous system has not been evaluated. In these studies 8-10, changes were observed in various HRV variables, while in two of those studies 8, 9, where sham groups were included, the sham conditions did not demonstrate any changes in the reported HRV parameters. There are strong indications that HRV is a good marker of ANS activity 19-24. Thus, in the three above mentioned studies, it appears that chiropractic interventions have an effect on the ANS.
At present, however, no studies to evaluate whether a lumbar spinal manipulation would produce a change in the HRV have been reported. Thus, the present study seeks to measure the effect of a lumbar adjustment, with a manually assisted mechanical force, producing a chiropractic adjustment, in participants without lumbar pain and a traditional adjustment in participants with lumbar pain on HRV. The hypothesis being that a lumbar intervention would have an acute effect on the ANS as demonstrated by the modulation of HRV variables.
Conditions
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Keywords
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Study Design
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RANDOMIZED
PARALLEL
BASIC_SCIENCE
NONE
Study Groups
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1
Two groups received a traditional chiropractic adjustment of the lumbar 5 and the other group received a manually assisted mechanical force adjustment of the lumbar 5.
Activator methods technique
Chiropractic adjustment by a manually assisted mechanical force
Traditional chiropractic adjustment
Lumbar roll according to the Diversified technique of chiropractic adjusting
2
The investigators had two groups, one for each chiropractic technique used in the research project and we had a control group
Activator methods technique
Chiropractic adjustment by a manually assisted mechanical force
Traditional chiropractic adjustment
Lumbar roll according to the Diversified technique of chiropractic adjusting
Interventions
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Activator methods technique
Chiropractic adjustment by a manually assisted mechanical force
Traditional chiropractic adjustment
Lumbar roll according to the Diversified technique of chiropractic adjusting
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* Maintenance care for the pain free group and the control group
Exclusion Criteria
* For the non pain group pain
18 Years
65 Years
ALL
Yes
Sponsors
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Université du Québec a Montréal
OTHER
Responsible Party
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UQAM
Principal Investigators
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Richard A Roy, DCMScPhD(c)
Role: PRINCIPAL_INVESTIGATOR
Université du Québec a Montréal
Locations
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Chiro-clinique Richard Roy
LaSalle, Quebec, Canada
Dr Richard Roy et Dr Fafard
LaSalle, Quebec, Canada
Countries
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Other Identifiers
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051934
Identifier Type: -
Identifier Source: org_study_id