News

Our website aims to provide a range of newsworthy items and links related to our evidence-based/informed chiropractic practice.

 

RESEARCH NEWS

It is important that readers are aware that the implications of all research results, no matter what health care discipline, need to be guarded. Much research in all health-care is conducted under controlled clinical or laboratory conditions, and often do not represent what happens in the average suburban clinic.

TOPICS

Manipulation of the spine affects brain function. (pubmed link)

Chiropractors should be aware of falls risk amongst their older patients. (pubmed link)

Chiropractic care improves sensorimotor function associated with falls risk in older patients. (pubmed link)

Chiropractic Manipulative Therapy more effective than imagining-guided injections for cervical disc herniations. (pubmed link)

 

Dysfunctional Spinal Joints Affects Sensorimotor Integration in the Prefrontal Cortex: A Brain Source Localization Study

This study adds to the mounting evidence that chiropractic spinal manipulative therapy (SMT) changes brain function. In 1997, Dr Ted Carrick first alluded to the possibility that chiropractic SMT may change brain function, albeit in an adverse manner. This created a significant furore both inside and outside of the chiropractic profession. Now, Delic and co-workers have conclusively demonstrated that a patient undergoing chiropractic SMT have changes in their pre-frontal lobes.

 

Abstract

Objectives.

Studies have shown decreases in N30 somatosensory evoked potential (SEP) peak amplitudes following spinal manipulation (SM) of dysfunctional segments in subclinical pain (SCP) populations. This study sought to verify these findings and to investigate underlying brain sources that may be responsible for such changes.

Methods.

Nineteen SCP volunteers attended two experimental sessions, SM and control in random order. SEPs from 62-channel EEG cap were recorded following median nerve stimulation (1000 stimuli at 2.3 Hz) before and after either intervention. Peak-to-peak amplitude and latency analysis was completed for different SEPs peak. Dipolar models of underlying brain sources were built by using the brain electrical source analysis. Two-way repeated measures ANOVA was used to assessed differences in N30 amplitudes, dipole locations, and dipole strengths.

Results. SM decreased the N30 amplitude by 16.9 ± 31.3% (P = 0.02), while no differences were seen following the control intervention (P = 0.4). Brain source modeling revealed a 4-source model but only the prefrontal source showed reduced activity by 20.2 ± 12.2% (P = 0.03) following SM.

Conclusion. A single session of spinal manipulation of dysfunctional segments in subclinical pain patients alters somatosensory processing at the cortical level, particularly within the prefrontal cortex.

 

 

Reference

Lelic D, Niazi IK2, Holt K, Jochumsen M, Dremstrup K, Yielder P, Murphy B, Drewes AM, Haavik H.Manipulation of Dysfunctional Spinal Joints Affects Sensorimotor Integration in the Prefrontal Cortex: A Brain Source Localization Study.Neural Plast. 2016;

 

Chiropractors should be aware of falls risk amongst their older patients.

Dr Kelly Holt PhD, and Dr Paul Noone PhD, conducted a cross-sectional study  at 12 chiropractc practices throughout Auckland, New Zealand, and Melbourne, Australia. The study involved gaining a profile of health status, fall history, and fall risk from active chiropractic patients who were 65 years or older.

RESULTS:

One hundred ten older chiropractic patients were approached, and 101 agreed to participate in this study (response rate, 91.8%). Thirty-five percent of participants had experienced at least 1 fall in the previous 12 months. Of those that had fallen, 80% had at least a minor injury, with 37% of fallers requiring medical attention and 6% suffering a serious injury. The prevalence of most fall risk factors was consistent with published data for community-dwelling older adults. Quality of life of older chiropractic patients appeared to be good, but fallers reported a lower physical component summary score compared with nonfallers (P = .04).

CONCLUSIONS:

A portion of the older chiropractic patients sampled in this study had a substantial risk of falling. This risk could be assessed on a regular basis for the presence of modifiable fall risk factors, and appropriate advice, given when fall risks are identified.

Chiropractic care improves sensorimotor function associated with falls risk in older patients.

Dr Kelly Holt PhD, who conducted previous published research on falls risk with Dr Paul Noone PhD, investigated the impact of chiropractic treatment on how patients integrate sensory function on older chiropractic patients.

The conclusion of these researchers:

Sensorimotor function and multisensory integration associated with fall risk and the physical component of quality of life improved in older adults receiving chiropractic care compared with control. Future research is needed to investigate the mechanisms of action that contributed to the observed changes in this study and whether chiropractic care has an impact on actual falls risk in older adults.

Reference

Holt KR, Haavik H, Lee AC, Murphy B, Elley CR. Effectiveness of Chiropractic Care to Improve Sensorimotor Function Associated With Falls Risk in Older People: A Randomized Controlled Trial. J Manipulative Physiol Ther. 2016 May;39(4):267-78

Chiropractic Manipulative Therapy more effective than imagining-guided injections for cervical disc herniations.

Subacute/Chronic pain patients with cervical disc herniations treated with chiropractic Spinal Manipulative Therapy (SMT)  were significantly more likely to report relevant “improvement” compared with CNRI patients. There was no difference in outcomes when comparing acute patients only. This team used MRI to confirm the presence of cervical disc herniation. The spinal manipulative therapy described in this scientific publication was manual, audible release, high velocity/low amplitude manipulation. The study design was a comparative-effectiveness model, and was the first published where 2 database cohorts were followed simultaneously.

REFERENCE

Peterson CK, Pfirrmann CW, Hodler J, Leemann S, Schmid C, Anklin B, Humphreys BK  Symptomatic, Magnetic Resonance Imaging-Confirmed Cervical Disk Herniation Patients: A Comparative-Effectiveness Prospective Observational Study of 2 Age- and Sex-Matched Cohorts Treated With Either Imaging-Guided Indirect Cervical Nerve Root Injections or Spinal Manipulative Therapy. J Manipulative Physiol Ther. 2016 Mar-Apr;39(3):210-7

CRITICAL ANALYSIS OF THE POLITICAL PRESSURE GROUP:FRIENDS OF SCIENCE IN MEDICINE- A PERSEVERATING POWER BASED IDEOLOGICAL PERSPECTIVE AIMING TO ELIMINATE ALL COMPETITION IN HEALTH CARE.

Mr Jeff Flatt of the University of New England, published an analysis of the political medicine pressure group, Friends of Science in Medicine, led by Mr John Dwyer and Mr Ken Harvey. You may be aware that this disparate political pressure group clearly state on their website their aim to eliminate all Complementary and Alternative Medicine (CAM), including chiropractic, and continues to ignore the scientific evidence underpinning many of the non pharmaceutical, non surgical methods used by CAM practitioners.

Mr Flatt, publishing in a refereed journal in 2013,  concluded that:

“The Friends of Science in Medicine represent complementary medicine
through a strategy of rhetoric and argumentation that contradicts the literature.
Their discourse is symbolic and derives from a power-based ideological
perspective that forms the basis for promoting exclusion of complementary
medicine from university education and primary health care.”

Flatt, Jeff. 2013. Critical Discourse Analysis of Rhetoric Against Complementary Medicine. Creative Approaches to Research,
vol. 6. no.2, pp. 57–70.