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Ambalavanar U, Haavik H, Rotondi NK, Murphy BA. Development of the Sensory-Motor Dysfunction Questionnaire and Pilot Reliability Testing. Brain Sci 2024; 14:619. [PMID: 38928619 PMCID: PMC11202203 DOI: 10.3390/brainsci14060619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 06/28/2024] Open
Abstract
Both chronic and recurrent spinal pain alter sensorimotor integration (SMI), which is demonstrated using complex neurophysiological techniques. Currently, there is no patient-reported outcome measure that documents and/or assesses SMI in populations with spinal problems. The purpose of this study was to develop the Sensory-Motor Dysfunction Questionnaire (SMD-Q) and assess its test-retest reliability and internal consistency in individuals with recurrent spinal pain. The SMD-Q was developed based on the existing literature on motor control disturbances associated with disordered SMI. The initial SMD-Q drafts underwent review by two separate panels of subject matter experts and a focus group with subclinical spine pain. Their suggestions were incorporated into the questionnaire prior to reliability testing. The questionnaire was administered twice at a seven-day interval using QualtricsTM. A total of 20 participants (14 females and 6 males; 20.95 ± 2.46 years of age) completed the study. Quadratic weighted kappa (Kw) was used to assess test-retest reliability and Cronbach's alpha (α) was used to assess internal consistency. Four items had a Kw < 0.40, seven had a 0.40 < Kw < 0.75, and one had a Kw > 0.75 (excellent agreement), with excellent internal consistency (α > 0.90). The pilot SMD-Q appears to reliably measure altered SMI, suggesting that revisions and testing with a larger sample are worth pursuing.
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Affiliation(s)
- Ushani Ambalavanar
- Faculty of Health Sciences, Institute of Technology, University of Ontario, 2000 Simcoe St. N., Oshawa, ON L1G 0C5, Canada
| | - Heidi Haavik
- Center of Chiropractic Research, New Zealand College of Chiropractic, Mount Wellington, Auckland 1060, New Zealand
| | - Nooshin Khobzi Rotondi
- Faculty of Health Sciences, Institute of Technology, University of Ontario, 2000 Simcoe St. N., Oshawa, ON L1G 0C5, Canada
| | - Bernadette Ann Murphy
- Faculty of Health Sciences, Institute of Technology, University of Ontario, 2000 Simcoe St. N., Oshawa, ON L1G 0C5, Canada
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Yanuck SB, Fox SK, Harting BR, Motyka TM. Effect of manual manipulation on mechanical gait parameters. J Osteopath Med 2024; 0:jom-2023-0203. [PMID: 38807459 DOI: 10.1515/jom-2023-0203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 04/09/2024] [Indexed: 05/30/2024]
Abstract
CONTEXT A variety of manual manipulation techniques are utilized in clinical practice to alleviate pain and improve musculoskeletal function. Many manual practitioners analyze gait patterns and asymmetries in their assessment of the patient, and an increasing number of gait motion capture studies are taking place with recent improvements in motion capture technology. This study is the first systematic review of whether these manual modalities have been shown to produce an objectively measurable change in gait mechanics. OBJECTIVES This study was designed to perform a systematic review of the literature to assess the impact of manual medicine modalities on biomechanical parameters of gait. METHODS A master search term composed of keywords and Medical Subject Headings (MeSH) search terms from an initial scan of relevant articles was utilized to search six databases. We screened the titles and abstracts of the resulting papers for relevance and then assessed their quality with the Cochrane Risk of Bias Tool. Clinical trials that featured both a manual manipulation intervention and multiple mechanical gait parameters were included. Case reports and other studies that only measured gait speed or other subjective measures of mobility were excluded. RESULTS We included 20 studies in our final analysis. They utilize manipulation techniques primarily from osteopathic, chiropractic, massage, and physiotherapy backgrounds. The conditions studied primarily included problems with the back, knee, and ankle, as well as healthy patients and Parkinson's patients. Control groups were highly variable, if not absent. Most studies measured their gait parameters utilizing either multicamera motion capture systems or force platforms. CONCLUSIONS Twelve of 20 papers included in the final analysis demonstrated a significant effect of manipulation on gait variables, many of which included either step length, walking speed, or sagittal range of motion (ROM) in joints of the lower extremity. However, the results and study design are too heterogeneous to draw robust conclusions from these studies as a whole. While there are initial indications that certain modalities may yield a change in certain gait parameters, the quality of evidence is low and there is insufficient evidence to conclude that manual therapies induce changes in biomechanical gait parameters. Studies are heterogeneous with respect to the populations studied and the interventions performed. Comparators were variable or absent across the studies, as were the outcome variables measured. More could be learned in the future with consistent methodology around blinding and sham treatment, and if the gait parameters measured were standardized and of a more robust clinical significance.
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Affiliation(s)
- Solomon B Yanuck
- Leon Levine Hall of Medical Sciences, 364432 Campbell University Jerry M. Wallace School of Osteopathic Medicine , Lillington, NC, USA
| | - Sarah K Fox
- Leon Levine Hall of Medical Sciences, 364432 Campbell University Jerry M. Wallace School of Osteopathic Medicine , Lillington, NC, USA
| | - Bethany R Harting
- Leon Levine Hall of Medical Sciences, 364432 Campbell University Jerry M. Wallace School of Osteopathic Medicine , Lillington, NC, USA
| | - Thomas M Motyka
- Department of Osteopathic Manipulative Medicine, 364432 Campbell University Jerry M. Wallace School of Osteopathic Medicine , Lillington, NC, USA
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Taylor DN. The Neurophysiological Lesion: A Scoping Review. J Chiropr Med 2023; 22:123-130. [PMID: 37346242 PMCID: PMC10280090 DOI: 10.1016/j.jcm.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 09/27/2022] [Accepted: 09/27/2022] [Indexed: 04/03/2023] Open
Abstract
Objective The purpose of this study was to examine the extent of the literature on the neurophysiological lesion as referenced in functional neurology. Methods A literature search was performed within the period from 2010 to March 2021. Search terms included central sensitization, central sensitivity syndrome, nociplastic pain, cold hyperalgesia, heat hyperalgesia, mechanical hyperalgesia, dynamic mechanical allodynia, temporal summation, spatial summation, and descending inhibition. A qualitative synthesis summarized the research findings, including clinical conditions and effect of spinal manipulation. Results There were 30 studies, which included 7 high-level studies (meta-analysis or systematic reviews), 22 randomized controlled studies, and 1 scoping review. The findings suggest the existence of the changes in the central integrated state of a population of neurons with various disorders, experimentally induced stimulation, and treatment. The current literature suggests plasticity of the central integrative state (CIS) with the onset of pathologies and the changes in the CIS with different conservative nonpharmacologic treatments. Conclusions This review suggests changes in the resting state of the CIS of a population of neurons that exist in the physiologic lesion may change in response to various therapies, including manipulative therapy. The findings from this review provide support of the hypothesis that nonpharmacologic conservative care may affect the neurophysiological lesion. However, studies were heterogeneous and evidence was lacking in the translation of targeting the therapies to distinct neuronal areas for clinical outcomes to treat specific disease states.
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Affiliation(s)
- David N. Taylor
- Department of Clinical Sciences, Texas Chiropractic College, Pasadena, Texas
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Kushnir A, Fedchyshyn B, Kachmar O. Review of effects of spinal manipulative therapy on neurological symptoms. J Bodyw Mov Ther 2023; 34:66-73. [PMID: 37301560 DOI: 10.1016/j.jbmt.2023.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 11/21/2022] [Accepted: 04/11/2023] [Indexed: 06/12/2023]
Abstract
BACKGROUND Neurological disorders are the leading cause of disability in the world. Neurological symptoms significantly affect the well-being of the individual. Spinal manipulative therapy (SMT) is a complementary method often used for people with neurological disorders. OBJECTIVE This study aimed to review the existing literature on the effects of SMT on common clinical symptoms of neurologic disorders and the quality of life. METHODS Narrative review was conducted through the literature published between January 2000 and April 2020 in English. The search was performed across four databases: PubMed, Google Scholar, PEDro, and Index to Chiropractic Literature. We used combinations of keywords related to SMT, neurological symptoms, and quality of life. Studies on both symptomatic and asymptomatic populations of different ages were included. RESULTS 35 articles were selected. Evidence for the administration of SMT for neurological symptoms is insufficient and sparse. Most studies focused on the effects of SMT on pain, revealing its benefits for spinal pain. SMT may increase strength in asymptomatic people and populations with spinal pain and stroke. SMT was reported to affect spasticity, muscle stiffness, motor function, autonomic function, and balance problems, but these studies were limited in number to make conclusions. An important finding was the positive influence of SMT on the quality of life in people with spinal pain, balance impairments, and cerebral palsy. CONCLUSION SMT may be beneficial for the symptomatic treatment of neurological disorders. SMT can positively affect the quality of life. However, limited evidence is available, and further high-quality research is required.
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Affiliation(s)
- A Kushnir
- Elita Rehabilitation Center, Kozyavkin Medical Group, Ukraine
| | - B Fedchyshyn
- Elita Rehabilitation Center, Kozyavkin Medical Group, Ukraine
| | - O Kachmar
- Elita Rehabilitation Center, Kozyavkin Medical Group, Ukraine.
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LoGiudice RJ, Rivera PL. Veterinary Spinal Manipulative Therapy or Animal Chiropractic in Veterinary Rehabilitation. Vet Clin North Am Small Anim Pract 2023; 53:757-774. [PMID: 36997408 DOI: 10.1016/j.cvsm.2023.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Veterinary rehabilitation is a multimodal diagnostic and treatment approach that is recommended and provided to patients daily. One therapeutic modality that may be beneficial (diagnostically and therapeutically) is veterinary spinal manipulative therapy or animal chiropractic (AC). AC is a receptor-based health-care modality being provided more frequently in veterinary practices. All clinicians should strive to understand the mode of action, indications, contraindications, how it affects the patient from the neuro-anatomical and biomechanical point of view, and most importantly, when not to provide the requested modality, as further diagnostics may be indicated.
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Grabowska W, Burton W, Kowalski MH, Vining R, Long CR, Lisi A, Hausdorff JM, Manor B, Muñoz-Vergara D, Wayne PM. A systematic review of chiropractic care for fall prevention: rationale, state of the evidence, and recommendations for future research. BMC Musculoskelet Disord 2022; 23:844. [PMID: 36064383 PMCID: PMC9442928 DOI: 10.1186/s12891-022-05783-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 08/25/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Falls in older adults are a significant and growing public health concern. There are multiple risk factors associated with falls that may be addressed within the scope of chiropractic training and licensure. Few attempts have been made to summarize existing evidence on multimodal chiropractic care and fall risk mitigation. Therefore, the broad purpose of this review was to summarize this research to date. BODY: Systematic review was conducted following PRISMA guidelines. Databases searched included PubMed, Embase, Cochrane Library, PEDro, and Index of Chiropractic Literature. Eligible study designs included randomized controlled trials (RCT), prospective non-randomized controlled, observational, and cross-over studies in which multimodal chiropractic care was the primary intervention and changes in gait, balance and/or falls were outcomes. Risk of bias was also assessed using the 8-item Cochrane Collaboration Tool. The original search yielded 889 articles; 21 met final eligibility including 10 RCTs. One study directly measured the frequency of falls (underpowered secondary outcome) while most studies assessed short-term measurements of gait and balance. The overall methodological quality of identified studies and findings were mixed, limiting interpretation regarding the potential impact of chiropractic care on fall risk to qualitative synthesis. CONCLUSION Little high-quality research has been published to inform how multimodal chiropractic care can best address and positively influence fall prevention. We propose strategies for building an evidence base to inform the role of multimodal chiropractic care in fall prevention and outline recommendations for future research to fill current evidence gaps.
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Affiliation(s)
- Weronika Grabowska
- Brigham and Women's Hospital and Harvard Medical School Division of Preventive Medicine, Osher Center for Integrative Medicine, 900 Commonwealth Avenue, 3rd Floor, Boston, MA, 02215, USA
| | - Wren Burton
- Brigham and Women's Hospital and Harvard Medical School Division of Preventive Medicine, Osher Center for Integrative Medicine, 900 Commonwealth Avenue, 3rd Floor, Boston, MA, 02215, USA.
| | - Matthew H Kowalski
- Osher Clinical Center for Integrative Medicine, Brigham and Women's Healthcare Center, 850 Boylston Street, Suite 422, Chestnut Hill, MA, 02445, USA
| | - Robert Vining
- Palmer Center for Chiropractic Research, 1000 Brady Street, Davenport, IA, 52803, USA
| | - Cynthia R Long
- Palmer Center for Chiropractic Research, 1000 Brady Street, Davenport, IA, 52803, USA
| | - Anthony Lisi
- Yale University Center for Medical Informatics, 300 George Street, Suite 501, New Haven, CT, USA
| | - Jeffrey M Hausdorff
- Center for the Study of Movement Cognition and Mobility, Tel Aviv Sourasky Medical Center, Dafna St 5, Tel Aviv-Yafo, Israel
| | - Brad Manor
- Hinda and Arthur Marcus Institute for Aging Research, 1200 Centre Street, Boston, MA, 02131, USA
| | - Dennis Muñoz-Vergara
- Brigham and Women's Hospital and Harvard Medical School Division of Preventive Medicine, Osher Center for Integrative Medicine, 900 Commonwealth Avenue, 3rd Floor, Boston, MA, 02215, USA
| | - Peter M Wayne
- Brigham and Women's Hospital and Harvard Medical School Division of Preventive Medicine, Osher Center for Integrative Medicine, 900 Commonwealth Avenue, 3rd Floor, Boston, MA, 02215, USA
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Botelho MB, Barbosa MA, Junior CS, Lara JP, Moreira A, Baptista AF. Immediate Effects of Spinal Manipulative Therapy on the Performance of Elite Brazilian Soccer Players: A Pilot Randomized Controlled Trial With an Internally Validated Sham Treatment. J Chiropr Med 2022; 21:270-279. [DOI: 10.1016/j.jcm.2022.02.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 02/25/2022] [Accepted: 02/27/2022] [Indexed: 10/17/2022] Open
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Effects of osteopathic manipulative treatment of the pivots on lower limb function in young professional football players. J Bodyw Mov Ther 2022; 32:1-6. [DOI: 10.1016/j.jbmt.2022.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 04/17/2022] [Accepted: 05/16/2022] [Indexed: 11/17/2022]
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Navid MS, Niazi IK, Lelic D, Amjad I, Kumari N, Shafique M, Holt K, Rashid U, Drewes AM, Haavik H. Chiropractic Spinal Adjustment Increases the Cortical Drive to the Lower Limb Muscle in Chronic Stroke Patients. Front Neurol 2022; 12:747261. [PMID: 35185747 PMCID: PMC8854235 DOI: 10.3389/fneur.2021.747261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 12/31/2021] [Indexed: 11/13/2022] Open
Abstract
This study aimed to investigate the effects of a single session of chiropractic spinal adjustment on the cortical drive to the lower limb in chronic stroke patients. In a single-blinded, randomized controlled parallel design study, 29 individuals with chronic stroke and motor weakness in a lower limb were randomly divided to receive either chiropractic spinal adjustment or a passive movement control intervention. Before and immediately after the intervention, transcranial magnetic stimulation (TMS)-induced motor evoked potentials (MEPs) were recorded from the tibialis anterior (TA) muscle of the lower limb with the greatest degree of motor weakness. Differences in the averaged peak-peak MEP amplitude following interventions were calculated using a linear regression model. Chiropractic spinal adjustment elicited significantly larger MEP amplitude (pre = 0.24 ± 0.17 mV, post = 0.39 ± 0.23 mV, absolute difference = +0.15 mV, relative difference = +92%, p < 0.001) compared to the control intervention (pre = 0.15 ± 0.09 mV, post = 0.16 ± 0.09 mV). The results indicate that chiropractic spinal adjustment increases the corticomotor excitability of ankle dorsiflexor muscles in people with chronic stroke. Further research is required to investigate whether chiropractic spinal adjustment increases dorsiflexor muscle strength and walking function in people with stroke.
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Affiliation(s)
- Muhammad Samran Navid
- Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland, New Zealand
| | - Imran Khan Niazi
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland, New Zealand
- Faculty of Health and Environmental Sciences, Health and Rehabilitation Research Institute, AUT University, Auckland, New Zealand
- Department of Health Science and Technology, Centre for Sensory-Motor Interactions, Aalborg University, Aalborg, Denmark
- *Correspondence: Imran Khan Niazi
| | - Dina Lelic
- Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Imran Amjad
- Faculty of Rehabilitation and Allied Health Sciences, Riphah International University, Islamabad, Pakistan
- Faculty of Engineering and Applied Sciences, Riphah International University, Islamabad, Pakistan
| | - Nitika Kumari
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland, New Zealand
- Faculty of Health and Environmental Sciences, Health and Rehabilitation Research Institute, AUT University, Auckland, New Zealand
| | - Muhammad Shafique
- Faculty of Rehabilitation and Allied Health Sciences, Riphah International University, Islamabad, Pakistan
| | - Kelly Holt
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland, New Zealand
| | - Usman Rashid
- Faculty of Health and Environmental Sciences, Health and Rehabilitation Research Institute, AUT University, Auckland, New Zealand
| | - Asbjørn Mohr Drewes
- Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Heidi Haavik
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland, New Zealand
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Green BN, Dunn AS. An Essential Guide to Chiropractic in the United States Military Health System and Veterans Health Administration. JOURNAL OF CHIROPRACTIC HUMANITIES 2021; 28:35-48. [PMID: 35002576 PMCID: PMC8720651 DOI: 10.1016/j.echu.2021.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/19/2021] [Accepted: 10/19/2021] [Indexed: 06/14/2023]
Abstract
OBJECTIVE The purpose of this article is to provide an essential overview of chiropractic services in United States military and veterans' health care systems. METHODS We reviewed literature, legislation, and policies from 1936 through September 2021 pertaining to chiropractic services in the United States military and veterans' health systems. Using these sources and our combined experience in these systems, we identified fundamental themes in the delivery of chiropractic care in the health care systems of the Department of Defense (providing health care for active duty service members) and the Department of Veterans Affairs (providing health care for veterans) in main topic areas. RESULTS We identified 7 main topic areas relevant to the 2 systems: populations served by chiropractors; health care systems; integration; utilization and supply of chiropractic care; vetting of chiropractors; roles and evaluation of chiropractors; and oversight and leadership. Key information about chiropractic care in these systems was synthesized into the main topic areas. Benefits of high-quality within-system chiropractic care to active-duty service members and veterans are presented. The assets that within-system chiropractors bring to the Department of Defense and Department of Veterans Affairs health care systems are discussed for each main topic area. CONCLUSION This article contains an essential overview of chiropractic services in the Department of Defense and the Department of Veterans Affairs. It offers clarity regarding the integration of chiropractic services into these health care systems and includes a 1-page brief of talking points that may help better inform ongoing discussions of chiropractic services in these 2 different but intertwined environments.
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Affiliation(s)
- Bart N. Green
- National University of Health Sciences, Lombard, Illinois
| | - Andrew S. Dunn
- Chiropractic Department, VA Western New York Healthcare System, Buffalo, New York
- Department of Chiropractic Clinical Sciences, New York Chiropractic College, Seneca Falls, New York
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Hegarty AK, Hsu M, Roy JS, Kardouni JR, Kutch JJ, Michener LA. Evidence for increased neuromuscular drive following spinal manipulation in individuals with subacromial pain syndrome. Clin Biomech (Bristol, Avon) 2021; 90:105485. [PMID: 34571486 PMCID: PMC8793937 DOI: 10.1016/j.clinbiomech.2021.105485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 06/16/2021] [Accepted: 09/13/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Thoracic spinal manipulation can improve pain and function in individuals with shoulder pain; however, the mechanisms underlying these benefits remain unclear. Here, we evaluated the effects of thoracic spinal manipulation on muscle activity, as alteration in muscle activity is a key impairment for those with shoulder pain. We also evaluated the relationship between changes in muscle activity and clinical outcomes, to characterize the meaningful context of a change in neuromuscular drive. METHODS Participants with shoulder pain related to subacromial pain syndrome (n = 28) received thoracic manipulation of low amplitude high velocity thrusts to the lower, middle and upper thoracic spine. Electromyographic muscle activity (trapezius-upper, middle, lower; serratus anterior; deltoid; infraspinatus) and shoulder pain (11-point scale) was collected pre and post-manipulation during arm elevation, and normalized to a reference contraction. Clinical benefits were assessed using the Pennsylvania Shoulder Score (Penn) at baseline and 2-3 days post-intervention. FINDINGS A significant increase in muscle activity was observed during arm ascent (p = 0.002). Using backward stepwise regression analysis, a specific increase in the serratus anterior muscle activity during arm elevation explained improved Penn scores following post-manipulation (p < 0.05). INTERPRETATION Thoracic spinal manipulation immediately increases neuromuscular drive. In addition, increased serratus anterior muscle activity, a key muscle for scapular motion, is associated with short-term improvements in shoulder clinical outcomes.
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Affiliation(s)
- Amy K. Hegarty
- Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, USA
| | - Melody Hsu
- Johns Hopkins University, Baltimore, MD, USA
| | - Jean-Sébastien Roy
- Faculty of Medicine, Department of Rehabilitation, Laval University; Centre for Interdisciplinary Research in Rehabilitation and Social Integration, Quebec City, QC, Canada
| | - Joseph R. Kardouni
- FORSCOM Holistic Health and Fitness (H2F) Field Test, U.S. Army Forces Command, Fort Bragg, NC, USA
| | - Jason J. Kutch
- Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, CA, USA
| | - Lori A. Michener
- Division of Biokinesiology and Physical Therapy, University of Southern California, 1540 E. Alcazar Street, CHP155, Los Angeles, CA 90089; USA
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Bell S, Howarth SJ. Effect of Drop-Piece High-Velocity, Low-Amplitude Manipulation to the Midfoot of Asymptomatic Adult Sprinters on Performance During a Unilateral Horizontal Drop-Jump Test: A Feasibility Investigation. J Manipulative Physiol Ther 2021; 44:527-534. [DOI: 10.1016/j.jmpt.2021.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 12/14/2021] [Accepted: 12/17/2021] [Indexed: 11/26/2022]
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The contemporary model of vertebral column joint dysfunction and impact of high-velocity, low-amplitude controlled vertebral thrusts on neuromuscular function. Eur J Appl Physiol 2021; 121:2675-2720. [PMID: 34164712 PMCID: PMC8416873 DOI: 10.1007/s00421-021-04727-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 05/20/2021] [Indexed: 02/08/2023]
Abstract
Purpose There is growing evidence that vertebral column function and dysfunction play a vital role in neuromuscular control. This invited review summarises the evidence about how vertebral column dysfunction, known as a central segmental motor control (CSMC) problem, alters neuromuscular function and how spinal adjustments (high-velocity, low-amplitude or HVLA thrusts directed at a CSMC problem) and spinal manipulation (HVLA thrusts directed at segments of the vertebral column that may not have clinical indicators of a CSMC problem) alters neuromuscular function.
Methods The current review elucidates the peripheral mechanisms by which CSMC problems, the spinal adjustment or spinal manipulation alter the afferent input from the paravertebral tissues. It summarises the contemporary model that provides a biologically plausible explanation for CSMC problems, the manipulable spinal lesion. This review also summarises the contemporary, biologically plausible understanding about how spinal adjustments enable more efficient production of muscular force. The evidence showing how spinal dysfunction, spinal manipulation and spinal adjustments alter central multimodal integration and motor control centres will be covered in a second invited review. Results Many studies have shown spinal adjustments increase voluntary force and prevent fatigue, which mainly occurs due to altered supraspinal excitability and multimodal integration. The literature suggests physical injury, pain, inflammation, and acute or chronic physiological or psychological stress can alter the vertebral column’s central neural motor control, leading to a CSMC problem. The many gaps in the literature have been identified, along with suggestions for future studies. Conclusion Spinal adjustments of CSMC problems impact motor control in a variety of ways. These include increasing muscle force and preventing fatigue. These changes in neuromuscular function most likely occur due to changes in supraspinal excitability. The current contemporary model of the CSMC problem, and our understanding of the mechanisms of spinal adjustments, provide a biologically plausible explanation for how the vertebral column’s central neural motor control can dysfunction, can lead to a self-perpetuating central segmental motor control problem, and how HVLA spinal adjustments can improve neuromuscular function.
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Haavik H, Niazi IK, Kumari N, Amjad I, Duehr J, Holt K. The Potential Mechanisms of High-Velocity, Low-Amplitude, Controlled Vertebral Thrusts on Neuroimmune Function: A Narrative Review. MEDICINA (KAUNAS, LITHUANIA) 2021; 57:536. [PMID: 34071880 PMCID: PMC8226758 DOI: 10.3390/medicina57060536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 05/25/2021] [Indexed: 12/12/2022]
Abstract
The current COVID-19 pandemic has necessitated the need to find healthcare solutions that boost or support immunity. There is some evidence that high-velocity, low-amplitude (HVLA) controlled vertebral thrusts have the potential to modulate immune mediators. However, the mechanisms of the link between HVLA controlled vertebral thrusts and neuroimmune function and the associated potential clinical implications are less clear. This review aims to elucidate the underlying mechanisms that can explain the HVLA controlled vertebral thrust--neuroimmune link and discuss what this link implies for clinical practice and future research needs. A search for relevant articles published up until April 2021 was undertaken. Twenty-three published papers were found that explored the impact of HVLA controlled vertebral thrusts on neuroimmune markers, of which eighteen found a significant effect. These basic science studies show that HVLA controlled vertebral thrust influence the levels of immune mediators in the body, including neuropeptides, inflammatory markers, and endocrine markers. This narravtive review discusses the most likely mechanisms for how HVLA controlled vertebral thrusts could impact these immune markers. The mechanisms are most likely due to the known changes in proprioceptive processing that occur within the central nervous system (CNS), in particular within the prefrontal cortex, following HVLA spinal thrusts. The prefrontal cortex is involved in the regulation of the autonomic nervous system, the hypothalamic-pituitary-adrenal axis and the immune system. Bi-directional neuro-immune interactions are affected by emotional or pain-related stress. Stress-induced sympathetic nervous system activity also alters vertebral motor control. Therefore, there are biologically plausible direct and indirect mechanisms that link HVLA controlled vertebral thrusts to the immune system, suggesting HVLA controlled vertebral thrusts have the potential to modulate immune function. However, it is not yet known whether HVLA controlled vertebral thrusts have a clinically relevant impact on immunity. Further research is needed to explore the clinical impact of HVLA controlled vertebral thrusts on immune function.
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Affiliation(s)
- Heidi Haavik
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (H.H.); (N.K.); (I.A.); (J.D.)
| | - Imran Khan Niazi
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (H.H.); (N.K.); (I.A.); (J.D.)
- Faculty of Health & Environmental Sciences, Health & Rehabilitation Research Institute, AUT University, Auckland 0627, New Zealand
- Department of Health Science and Technology, Aalborg University, 9220 Aalborg, Denmark
| | - Nitika Kumari
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (H.H.); (N.K.); (I.A.); (J.D.)
- Faculty of Health & Environmental Sciences, Health & Rehabilitation Research Institute, AUT University, Auckland 0627, New Zealand
| | - Imran Amjad
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (H.H.); (N.K.); (I.A.); (J.D.)
- Faculty of Rehabilitation and Allied Health Sciences, Riphah International University, Islamabad 46000, Pakistan
| | - Jenna Duehr
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (H.H.); (N.K.); (I.A.); (J.D.)
| | - Kelly Holt
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (H.H.); (N.K.); (I.A.); (J.D.)
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15
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The Effects of 4 Weeks of Chiropractic Spinal Adjustments on Motor Function in People with Stroke: A Randomized Controlled Trial. Brain Sci 2021; 11:brainsci11060676. [PMID: 34064209 PMCID: PMC8224305 DOI: 10.3390/brainsci11060676] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/19/2021] [Accepted: 05/19/2021] [Indexed: 12/02/2022] Open
Abstract
Chiropractic spinal adjustments have been shown to result in short-term increases in muscle strength in chronic stroke patients, however, the effect of longer-term chiropractic spinal adjustments on people with chronic stroke is unknown. This exploratory study assessed whether 4 weeks of chiropractic spinal adjustments, combined with physical therapy (chiro + PT), had a greater impact than sham chiropractic with physical therapy (sham + PT) did on motor function (Fugl Meyer Assessment, FMA) in 63 subacute or chronic stroke patients. Secondary outcomes included health-related quality of life and other measures of functional mobility and disability. Outcomes were assessed at baseline, 4 weeks (post-intervention), and 8 weeks (follow-up). Data were analyzed using linear mixed-effects models or generalized linear mixed models. A post-hoc responder analysis was performed to investigate the clinical significance of findings. At 4 weeks, there was a larger effect of chiro + PT, compared with sham + PT, on the FMA (difference = 6.1, p = 0.04). The responder analysis suggested the improvements in motor function seen following chiropractic spinal adjustments may have been clinically significant. There was also a robust improvement in both groups in most measures from baseline to the 4- and 8-week assessments, but between-group differences were no longer significant at the 8-week assessment. Four weeks of chiro + PT resulted in statistically significant improvements in motor function, compared with sham + PT, in people with subacute or chronic stroke. These improvements appear to be clinically important. Further trials, involving larger group sizes and longer follow-up and intervention periods, are required to corroborate these findings and further investigate the impacts of chiropractic spinal adjustments on motor function in post-stroke survivors. ClinicalTrials.gov Identifier NCT03849794.
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16
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Butts R, Legaspi O, Nocera-Mekel A, Dunning J. Physical therapy treatment of a pediatric patient with symptoms consistent with a spinal cord injury without radiographic abnormality: A retrospective case report. J Bodyw Mov Ther 2021; 27:455-463. [PMID: 34391271 DOI: 10.1016/j.jbmt.2021.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 12/22/2020] [Accepted: 01/13/2021] [Indexed: 10/22/2022]
Abstract
BACKGROUND A spinal cord injury without radiographic abnormality (SCIWORA) is a relatively uncommon event that occurs in children following cervical trauma primarily due to sports-related injuries or physical abuse. CASE DESCRIPTION This case report describes an 11-year-old wrestler that developed signs and symptoms consistent with a SCIWORA following neck trauma during competition. Despite all diagnostic tests being inconclusive, the patient demonstrated increased cervical, thoracic, and lumbar paraspinal tone along with pain, loss of sensation, loss of mobility, and weakness of the lower extremities. As a result, the patient was confined to a wheelchair and required maximum assistance to transfer and ambulate with a walker. The patient was referred to physical therapy nine days after the traumatic event, where he received interferential current with moist heat, myofascial release of paraspinal muscles, functional exercise, gait training, and spinal manipulative therapy targeting the cervical, thoracic, and lumbar vertebrae. OUTCOME After 13 physical therapy treatments over 5-weeks, the patient was able to ambulate independently and perform all activities of daily living without pain or functional limitation. The following case report outlines this patient's successful journey toward recovery. CONCLUSION This case report suggests that spinal manipulative therapy may be a safe and effective intervention when used within a multi-modal treatment strategy for patients with signs and symptoms consistent with SCIWORA. Moreover, spinal manipulative therapy may be considered a beneficial treatment in some pediatric patients. However, this report describes a single patient, and further research is required on the use of spinal manipulation in this patient population.
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Affiliation(s)
- Raymond Butts
- Research Physical Therapy Specialists, Columbia, SC, USA; American Academy of Manipulative Therapy, Montgomery, AL, USA.
| | | | | | - James Dunning
- American Academy of Manipulative Therapy, Montgomery, AL, USA; Montgomery Osteopractic Physiotherapy and Acupuncture Clinic, Montgomery, AL, USA
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17
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Malaya CA, Haworth J, Pohlman KA, Smith DL. Immediate impact of extremity manipulation on dual task performance: a randomized, crossover clinical trial. Chiropr Man Therap 2021; 29:6. [PMID: 33541378 PMCID: PMC7863424 DOI: 10.1186/s12998-021-00366-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 01/25/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Previous research demonstrated that manipulation of the extremities was associated with changes in multisegmental postural sway as well as improvement in a lower extremity balancing task. We were interested if these effects would extend to an upper extremity task. Our aim in this study was to investigate whether extremity manipulation could influence dual task performance where the explicit suprapostural task was balancing a water filled tube in the frontal plane. METHODS Participants were healthy volunteers (aged 21-32 years). Upper- or lower-extremity manipulations were delivered in a participant and assessor blinded, randomized crossover, clinical trial. Postural (center of pressure) and suprapostural (tube motion) measurements in the frontal plane were made pre-post manipulation under eyes open and eyes closed conditions using a BTrackS™ force plate and a Shimmer inertial measurement unit, respectively. Pathlength, range, root mean square and sample entropy were calculated to describe each signal during the dual task performance. RESULTS There was no main effect of manipulation or vision for the suprapostural task (tube motion). However, follow-up to interaction effects indicates that roll pathlength, range and root means square of tube motion all decreased (improvement) following lower extremity manipulation with eyes open. Regarding the postural task, there was a main effect of manipulation on mediolateral center of pressure such that pathlength reduced with both upper and lower extremity manipulation with larger decreases in pathlength values following upper extremity manipulation. CONCLUSION Our findings show that manipulation of the extremities enhanced stability (e.g. tube stabilization and standing balance) on performance of a dual task. This furthers the argument that site-specific manipulations influence context specific motor behavior/coordination. However, as this study focused only on the immediate effects of extremity manipulation, caution is urged in generalizing these results to longer time frames until more work has been done examining the length of time these effects last. TRIAL REGISTRATION Clinicaltrials.gov , NCT03877367 , Registered 15 March 2019. Data collection took place July 2019.
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Affiliation(s)
- Christopher A Malaya
- Center for Neuromotor and Biomechanics Research, University of Houston, Houston, TX, USA. .,Research Center, Parker University, Dallas, TX, USA.
| | - Joshua Haworth
- Department of Human Movement Science, Oakland University, Rochester, MI, USA
| | | | - Dean L Smith
- Department of Kinesiology and Health, Miami University, Oxford, Ohio, USA.,Essence of Wellness Chiropractic Center, Eaton, OH, USA
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18
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The Effects of Spinal Manipulation on Motor Unit Behavior. Brain Sci 2021; 11:brainsci11010105. [PMID: 33466707 PMCID: PMC7828823 DOI: 10.3390/brainsci11010105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/08/2021] [Accepted: 01/12/2021] [Indexed: 12/05/2022] Open
Abstract
Over recent years, a growing body of research has highlighted the neural plastic effects of spinal manipulation on the central nervous system. Recently, it has been shown that spinal manipulation improved outcomes, such as maximum voluntary force and limb joint position sense, reflecting improved sensorimotor integration and processing. This study aimed to further evaluate how spinal manipulation can alter neuromuscular activity. High density electromyography (HD sEMG) signals from the tibialis anterior were recorded and decomposed in order to study motor unit changes in 14 subjects following spinal manipulation or a passive movement control session in a crossover study design. Participants were asked to produce ankle dorsiflexion at two force levels, 5% and 10% of maximum voluntary contraction (MVC), following two different patterns of force production (“ramp” and “ramp and maintain”). A significant decrease in the conduction velocity (p = 0.01) was observed during the “ramp and maintain” condition at 5% MVC after spinal manipulation. A decrease in conduction velocity suggests that spinal manipulation alters motor unit recruitment patterns with an increased recruitment of lower threshold, lower twitch torque motor units.
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19
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Wang L, Wang C, Youssef ASA, Xu J, Huang X, Xia N. Physiotherapeutic scoliosis-specific exercises performed immediately after spinal manipulative therapy for the treatment of mild adolescent idiopathic scoliosis: study protocol for a randomized controlled pilot trial. Trials 2021; 22:58. [PMID: 33446270 PMCID: PMC7807706 DOI: 10.1186/s13063-020-05000-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 12/24/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Spinal manipulative therapy is commonly used in the treatment of adolescent idiopathic scoliosis. Some therapists also rely on physiotherapeutic scoliosis-specific exercise (PSSE). Combining these two modalities seems reasonable, but the effectiveness of this combination has never been rigorously tested. Here, a protocol for a pilot study is proposed to determine the feasibility of conducting a larger randomized trial. The pilot study was designed to test the hypothesis that spinal manipulative therapy followed by PSSE is more effective than PSSE alone in improving the Cobb angle, sensorimotor integration, the angle of trunk rotation (ATR), body symmetry, and quality of life. METHODS The protocol describes a randomized controlled pilot trial with 40 subjects divided into study and control groups. Both groups will receive 8 weeks of PSSE, but the study group will also receive spinal manipulative therapy during the first 2 weeks before PSSE. The primary outcome will be an estimate of the feasibility of conducting a full-scale experiment. The influencing factors will be the time to complete enrollment, the recruitment rate, subject retention, and adherence to the treatment allocations. The secondary outcomes that will be used to assess the efficacy of treatment will include the Cobb angle, somatosensory evoked potentials, ATR, three-dimensional postural parameters, and scores on the 22-item Scoliosis Research Society outcomes questionnaire. The Cobb angle will be measured at baseline and at the end of 8 weeks of training. The somatosensory evoked potentials will be measured at baseline and at the end of 2 weeks of training. The ATR, three-dimensional postural parameters, and scores on the 22-item Scoliosis Research Society outcomes questionnaire will be measured at baseline and at 2 weeks, 4 weeks, and 8 weeks of treatment. DISCUSSION This study will inform the design of a future full-scale trial. The outcomes will provide preliminary data about the efficacy of the combination of spinal manipulative therapy and exercise in treating scoliosis. TRIAL REGISTRATION Prospectively registered at Chinese clinical trial registry, ChiCTR1900027037 . Registered on 29 October 2019. http://www.chictr.org.cn/edit.aspx?pid=44954&htm=4.
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Affiliation(s)
- Li Wang
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chun Wang
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Department of Rehabilitation Medicine, Shantou Central Hospital, Shantou, China
| | - Ahmed S A Youssef
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Basic Science Department, Faculty of Physical Therapy, Beni-Suef University, Beni-Suef, Egypt
| | - Jiang Xu
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaolin Huang
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
| | - Nan Xia
- Department of Rehabilitation Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
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20
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Niazi IK, Kamavuako EN, Holt K, Janjua TAM, Kumari N, Amjad I, Haavik H. The Effect of Spinal Manipulation on the Electrophysiological and Metabolic Properties of the Tibialis Anterior Muscle. Healthcare (Basel) 2020; 8:healthcare8040548. [PMID: 33321904 PMCID: PMC7764559 DOI: 10.3390/healthcare8040548] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 12/07/2020] [Accepted: 12/07/2020] [Indexed: 12/31/2022] Open
Abstract
There is growing evidence showing that spinal manipulation increases muscle strength in healthy individuals as well as in people with some musculoskeletal and neurological disorders. However, the underlying mechanism by which spinal manipulation changes muscle strength is less clear. This study aimed to assess the effects of a single spinal manipulation session on the electrophysiological and metabolic properties of the tibialis anterior (TA) muscle. Maximum voluntary contractions (MVC) of the ankle dorsiflexors, high-density electromyography (HDsEMG), intramuscular EMG, and near-infrared spectroscopy (NIRS) were recorded from the TA muscle in 25 participants with low level recurring spinal dysfunction using a randomized controlled crossover design. The following outcomes: motor unit discharge rate (MUDR), strength (force at MVC), muscle conduction velocity (CV), relative changes in oxy- and deoxyhemoglobin were assessed pre and post a spinal manipulation intervention and passive movement control. Repeated measures ANOVA was used to assess within and between-group differences. Following the spinal manipulation intervention, there was a significant increase in MVC (p = 0.02; avg 18.87 ± 28.35%) and a significant increase in CV in both the isometric steady-state (10% of MVC) contractions (p < 0.01; avg 22.11 ± 11.69%) and during the isometric ramp (10% of MVC) contractions (p < 0.01; avg 4.52 ± 4.58%) compared to the control intervention. There were no other significant findings. The observed TA strength and CV increase, without changes in MUDR, suggests that the strength changes observed following spinal manipulation are, in part, due to increased recruitment of larger, higher threshold motor units. Further research needs to investigate the longer term and potential functional effects of spinal manipulation in various patients who may benefit from improved muscle function and greater motor unit recruitment.
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Affiliation(s)
- Imran Khan Niazi
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (K.H.); (N.K.); (I.A.)
- Faculty of Health & Environmental Sciences, Health & Rehabilitation Research Institute, AUT University, Auckland 0627, New Zealand
- Department of Health Science and Technology, Aalborg University, Aalborg 9220, Denmark;
- Correspondence: (I.K.N.); (H.H.)
| | - Ernest Nlandu Kamavuako
- Department of Informatics, King’s College London, London WC2R 2LS, UK;
- Faculté de Médecine, Université de Kindu, Kindu, Congo
| | - Kelly Holt
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (K.H.); (N.K.); (I.A.)
| | | | - Nitika Kumari
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (K.H.); (N.K.); (I.A.)
- Faculty of Health & Environmental Sciences, Health & Rehabilitation Research Institute, AUT University, Auckland 0627, New Zealand
| | - Imran Amjad
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (K.H.); (N.K.); (I.A.)
- Faculty of Rehabilitation and Allied Sciences, Riphah International University, Islamabad 46000, Pakistan
| | - Heidi Haavik
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand; (K.H.); (N.K.); (I.A.)
- Correspondence: (I.K.N.); (H.H.)
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21
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Hinkeldey N, Okamoto C, Khan J. Spinal Manipulation and Select Manual Therapies: Current Perspectives. Phys Med Rehabil Clin N Am 2020; 31:593-608. [PMID: 32981581 DOI: 10.1016/j.pmr.2020.07.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Touch is fundamental to the doctor-patient relationship. Touch can produce neuromodulatory effects that mitigate pain and put patients at ease. Touch begins with a confident handshake and continues throughout the physical examination. Touching patients where they hurt is a clear indication that a provider understands their complaint. Touch often continues as a function of treatment. This article updates evidence surrounding human touch and addresses mechanisms of action for manual therapy, the impact of manual therapy on pain management, health care conditions for which manual therapy may be beneficial, treatment plans with dose-response evidence, and the impact of manual therapy on the health care system.
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Affiliation(s)
- Nathan Hinkeldey
- VA Central Iowa Health Care System, 3600 30th Street, Des Moines, IA 50310, USA; Palmer College of Chiropractic, 1000 Brady Street, Davenport, IA 52803, USA.
| | - Casey Okamoto
- Minneapolis VA Health Care System, 1 Veterans Drive, Minneapolis, MN 55417, USA; Department of Rehabilitation Medicine, 500 Boynton Health Service Bridge, Minneapolis, MN 55455, USA
| | - Jamal Khan
- Minneapolis VA Health Care System, 1 Veterans Drive, Minneapolis, MN 55417, USA; Department of Rehabilitation Medicine, 500 Boynton Health Service Bridge, Minneapolis, MN 55455, USA
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22
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Steven Waterstone T, Niazi IK, Navid MS, Amjad I, Shafique M, Holt K, Haavik H, Samani A. Functional Connectivity Analysis on Resting-State Electroencephalography Signals Following Chiropractic Spinal Manipulation in Stroke Patients. Brain Sci 2020; 10:E644. [PMID: 32957711 PMCID: PMC7564276 DOI: 10.3390/brainsci10090644] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/09/2020] [Accepted: 09/16/2020] [Indexed: 02/06/2023] Open
Abstract
Stroke impairments often present as cognitive and motor deficits, leading to a decline in quality of life. Recovery strategy and mechanisms, such as neuroplasticity, are important factors, as these can help improve the effectiveness of rehabilitation. The present study investigated chiropractic spinal manipulation (SM) and its effects on resting-state functional connectivity in 24 subacute to chronic stroke patients monitored by electroencephalography (EEG). Functional connectivity of both linear and non-linear coupling was estimated by coherence and phase lag index (PLI), respectively. Non-parametric cluster-based permutation tests were used to assess the statistical significance of the changes in functional connectivity following SM. Results showed a significant increase in functional connectivity from the PLI metric in the alpha band within the default mode network (DMN). The functional connectivity between the posterior cingulate cortex and parahippocampal regions increased following SM, t (23) = 10.45, p = 0.005. No significant changes occurred following the sham control procedure. These findings suggest that SM may alter functional connectivity in the brain of stroke patients and highlights the potential of EEG for monitoring neuroplastic changes following SM. Furthermore, the altered connectivity was observed between areas which may be affected by factors such as decreased pain perception, episodic memory, navigation, and space representation in the brain. However, these factors were not directly monitored in this study. Therefore, further research is needed to elucidate the underlying mechanisms and clinical significance of the observed changes.
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Affiliation(s)
| | - Imran Khan Niazi
- Department of Health Science and Technology, Aalborg University, 9000 Aalborg, Denmark
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand
- Faculty of Health & Environmental Sciences, Health & Rehabilitation Research Institute, AUT University, Auckland 1010, New Zealand
| | - Muhammad Samran Navid
- Department of Health Science and Technology, Aalborg University, 9000 Aalborg, Denmark
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand
| | - Imran Amjad
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand
- Faculty of Rehabilitation and Allied Sciences & Faculty of Engineering and Applied Sciences, Riphah International University, Islamabad 44000, Pakistan
| | - Muhammad Shafique
- Faculty of Rehabilitation and Allied Sciences & Faculty of Engineering and Applied Sciences, Riphah International University, Islamabad 44000, Pakistan
| | - Kelly Holt
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand
| | - Heidi Haavik
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand
| | - Afshin Samani
- Department of Health Science and Technology, Aalborg University, 9000 Aalborg, Denmark
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23
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Corso M, Liang C, Tran S, Howitt S, Srbely J, Mior SA. The Immediate Effect of Spinal Manipulation on Ball Velocity and Neuromuscular Function During an Instep Kick in Former Varsity Soccer Players: A Feasibility Study. J Strength Cond Res 2020; 36:2558-2565. [PMID: 32826833 DOI: 10.1519/jsc.0000000000003720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Corso, M, Liang, L, Tran, S, Howitt, S, Srbely, J, and Mior, SA. The immediate effect of spinal manipulation on ball velocity and neuromuscular function during an instep kick in former Varsity soccer players: a feasibility study. J Strength Cond Res XX(X): 000-000, 2020-Spinal manipulation (SM) has been shown to increase ball velocity (BV) in soccer players. Evidence suggests that SM modulates responses at spinal or cortical levels to enhance force production in asymptomatic populations. No studies have explored the underlying neuromuscular mechanisms contributing to changes in BV post-SM in soccer players. We assessed the feasibility of measuring change in BV and neuromuscular function after SM in former Varsity level soccer players with a pre-post study design. Three to 5 maximal instep kicks were performed before and after SM at the L3-5 level. Ball velocity was measured using high-speed camera. Activation of lower limb and trunk musculature was recorded with electromyography. Outcomes included ease of recruitment, scheduling and data capture, as well as expectation and perception of SM effect and adverse events (AE). Fifteen potential subjects were recruited over 1.5 months. Eleven were scheduled (24-31 years; 8 females, 3 males). Two subjects reported mild AE after maximal voluntary isometric contraction testing. A significant increase in BV (mean change: 1.75 m·s [95% confidence interval: 0.5-3.0]) and a trend to increased peak-activation of knee extensors (90.7%) were observed post-SM. Findings suggest that our recruitment strategy and methodology are feasible in a larger trial with some modifications. Our preliminary findings support previous research by suggesting that increased BV may be mediated through increased activation of knee extensors during the kick. Our findings may offer additional insight into the underlying neuromuscular mechanisms contributing to immediate change in BV post-SM.
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Affiliation(s)
- Melissa Corso
- Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, Ontario, Canada
| | - Carmen Liang
- Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, Ontario, Canada.,Department of Health Sciences, University of Ontario Institute of Technology, Oshawa, Ontario, Canada
| | - Steve Tran
- Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, Ontario, Canada
| | - Scott Howitt
- Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, Ontario, Canada
| | - John Srbely
- Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, Ontario, Canada.,Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Silvano A Mior
- Department of Graduate Studies, Canadian Memorial Chiropractic College, North York, Ontario, Canada.,Department of Health Sciences, University of Ontario Institute of Technology, Oshawa, Ontario, Canada
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24
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Impact of Extremity Manipulation on Postural Sway Characteristics: A Preliminary, Randomized Crossover Study. J Manipulative Physiol Ther 2020; 43:457-468. [PMID: 32800642 DOI: 10.1016/j.jmpt.2019.02.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/02/2019] [Accepted: 02/25/2019] [Indexed: 01/09/2023]
Abstract
OBJECTIVE Evaluate multisegmental postural sway after upper- vs lower-extremity manipulation. METHODS Participants were healthy volunteers (aged 21-40 years). Upper- or lower-extremity manipulations were delivered in a randomized crossover design. Postural assessments were made pre-post manipulation, in floor and rocker board conditions. Analysis included traditional balance measures of pathlength and range and sample entropy (SampEn) to examine the temporal structure of sway of the head, trunk, and surface. RESULTS No statistical changes in pathlength or sway range on the ground surface condition were observed. No increases in the amount of sway occurred in any condition. Chiropractic manipulation of either upper or lower extremities led to reductions in traditional measures of postural control on the rocker board. In the anteroposterior direction (sagittal plane), lower-extremity manipulation led to increased trunk SampEn while on the ground, and conversely a decreased SampEn while on the rocker board. In the mediolateral rocker board condition (frontal plane), manipulation elicited a change in SampEn that differed according to site of manipulation; upper-extremity manipulation increased SampEn, whereas lower-extremity manipulation reduced SampEn. CONCLUSION Both upper- and lower-extremity manipulation influenced several measures of postural sway on both the ground and the rocker board. Lower-extremity manipulation improved the organization of sway at the trunk (anteroposterior direction) and the board (mediolateral direction). Given the reduction and reorganization of sway metrics seen in this study, we propose extending this line of research to the elderly who are at greatest risk of increased sway and falls.
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25
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Vining R, Long CR, Minkalis A, Gudavalli MR, Xia T, Walter J, Coulter I, Goertz CM. Effects of Chiropractic Care on Strength, Balance, and Endurance in Active-Duty U.S. Military Personnel with Low Back Pain: A Randomized Controlled Trial. J Altern Complement Med 2020; 26:592-601. [PMID: 32543211 DOI: 10.1089/acm.2020.0107] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Objectives: To investigate whether chiropractic care influences strength, balance, and/or endurance in active-duty United States military personnel with low back pain (LBP). Design: This study employed a prospective randomized controlled trial using a pragmatic treatment approach. Participants were randomly allocated to 4 weeks of chiropractic care or to a wait-list control. Interventions: Chiropractic care consisted of spinal manipulation, education, advice, and reassurance. Settings/Location: Naval Air Technical Training Center branch clinic at the Naval Hospital Pensacola Florida. Subjects: One hundred ten active-duty military personnel 18-40 years of age with self-reported LBP. Outcome measures: Isometric pulling strength from a semisquat position was the primary outcome. Secondary outcomes were single-leg balance with eyes open and eyes closed, and trunk muscle endurance using the Biering-Sorensen test. Patient-reported outcomes such as pain severity and disability were also measured. Outcomes were measured at baseline and 4 weeks. Linear mixed-effects regression models over baseline and 4 weeks were used for analysis. Results: Participants had mean age of 30 years (18-40), 17% were female, 33% were non-white, and 86% reported chronic LBP. Mean maximum pulling strength in the chiropractic group increased by 5.08 kgs and decreased by 7.43 kgs in the wait-list group, with a statistically significant difference in mean change between groups (p = 0.003). Statistically significant differences in mean change between groups were also observed in trunk muscle endurance (13.9 sec, p = 0.002) and balance with eyes closed (0.47 sec, p = 0.01), but not in balance with eyes open (1.19 sec, p = 0.43). Differences in mean change between groups were statistically significant in favor of chiropractic for LBP-related disability, pain intensity and interference, and fear-avoidance behavior. Conclusions: Active-duty military personnel receiving chiropractic care exhibited improved strength and endurance, as well as reduced LBP intensity and disability, compared with a wait-list control.
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Affiliation(s)
- Robert Vining
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, Davenport, IA, USA
| | - Cynthia R Long
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, Davenport, IA, USA
| | - Amy Minkalis
- Palmer Center for Chiropractic Research, Palmer College of Chiropractic, Davenport, IA, USA
| | - M Ram Gudavalli
- College of Chiropractic Medicine, Keiser University, West Palm Beach, FL, USA
| | - Ting Xia
- Mechanical Engineering Department, Northern Illinois University, DeKalb, IL, USA
| | - Joan Walter
- Samueli Integrative Health Programs, H&S Ventures, Alexandria, VA, USA
| | | | - Christine M Goertz
- Department of Orthopedic Surgery, Duke University School of Medicine, Durham, NC, USA
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Immediate Effects of a Single Spinal Manipulation on Lower-Limb Strength in Healthy Individuals: A Critically Appraised Topic. J Sport Rehabil 2020; 30:161-165. [PMID: 32502970 DOI: 10.1123/jsr.2019-0372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 03/20/2020] [Accepted: 03/27/2020] [Indexed: 11/18/2022]
Abstract
Clinical Scenario: Many people with lower quarter musculoskeletal dysfunction present with muscle weakness. Strength training hypertrophies muscle and increases strength, but often requires periods over 6 weeks, which can exceed the episode of care. Weakness can persist despite muscle hypertrophy, particularly in the early stages of joint pathology or in the presence of limb or spinal joint hypomobility, which may inhibit muscle activation. Emerging evidence suggests spinal manipulation can increase short-term strength. Screening for specific muscle weakness that could benefit from manipulation to particular spinal segments could facilitate efficient clinical intervention. Although the neuromuscular mechanisms through which manipulation can increase strength remains a topic of investigation, immediate gains can benefit patients by jump-starting an exercise program to train new muscle function gained and enhancing the motivation to continue strengthening. Evidence from randomized controlled trials would provide support for using manipulation to increase muscle strength, while studying healthy people would eliminate confounding factors, such as pain and pathology. Clinical Question: Does randomized controlled trial-level evidence support the concept that a single lumbar spine manipulation session can increase lower-limb strength in healthy individuals? Summary of Key Findings: Level 1b evidence of moderate quality from 3 randomized controlled trials showed immediate small to large effect size muscle strength increases immediately after lumbar spine manipulation. Clinical Bottom Line: Lumbar spine manipulation can result in immediate lower-limb isometric strength increases. While healthy people with normal muscle strength may improve minimally, joint manipulation for people with knee and hip weakness who are otherwise healthy can result in large effect size strength gains. Strength of Recommendation: Moderate quality level 1b evidence from randomized controlled trials with small samples support the use of spinal manipulation to immediately increase lower-limb strength. Additional studies investigating impact on strength and function immediately in people with musculoskeletal pathology are warranted.
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The Effectiveness of Spinal Manipulation in Increasing Muscle Strength in Healthy Individuals: A Systematic Review and Meta-Analysis. J Manipulative Physiol Ther 2020; 42:148-158. [PMID: 31126523 DOI: 10.1016/j.jmpt.2018.10.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 09/24/2018] [Accepted: 10/21/2018] [Indexed: 12/18/2022]
Abstract
OBJECTIVE The purpose of this study was to systematically review the effects of spinal manipulation on muscular strength in healthy individuals and conduct a meta-analysis to appraise the quality of evidence. METHODS Articles were searched and retrieved from MEDLINE, EMBASE, CINAHL, Cochrane Library, PubMed, Academic Search Premier, SPORTDiscus, and AMED. Searches were conducted in September 2017 without a limit on the starting period. The Physiotherapy Evidence Database scale was used to appraise the quality of the included studies. Data from eligible articles were pooled, and meta-analyses were conducted. The quality of evidence was appraised by the Grading of Recommendations, Assessment, Development and Evaluations approach. The registration number for the review on PROSPERO is CRD42017075215. RESULTS A total of 911 records were screened, and 3 randomized controlled trials were eligible to be included in this review. There was a significant pooled standardized mean difference in isometric strength (0.93, 95% confidence interval [CI], 0.17-1.68; P = .02) between the experimental and control groups, with a moderate level of heterogeneity. CONCLUSION This review suggests that spinal manipulative therapy augments the percentage of change in isometric strength gain among healthy participants when compared to no intervention or sham manipulation. However, the heterogeneity of pooled studies in this review suggests that the results should be interpreted with caution.
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Does manual therapy affect functional and biomechanical outcomes of a sit-to-stand task in a population with low back pain? A preliminary analysis. Chiropr Man Therap 2020; 28:5. [PMID: 31998472 PMCID: PMC6979331 DOI: 10.1186/s12998-019-0290-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 12/23/2019] [Indexed: 11/10/2022] Open
Abstract
Introduction Manual therapy (MT) hypothetically affects discrepant neuromuscular control and movement observed in populations with low back pain (LBP). Previous studies have demonstrated the limited influence of MT on movement, predominately during range of motion (ROM) testing. It remains unclear if MT affects neuromuscular control in mobility-based activities of daily living (ADLs). The sit-to-stand (STS) task represents a commonly-performed ADL that is used in a variety of clinical settings to assess functional and biomechanical performance. Objective To determine whether MT affects functional performance and biomechanical performance during a STS task in a population with LBP. Methods Kinematic data were recorded from the pelvis and thorax of participants with LBP, using an optoelectronic motion capture system as they performed a STS task before and after MT from November 2011 to August 2014. MT for each participant consisted of two high-velocity low-amplitude spinal manipulations, as well as two grade IV mobilizations of the lumbar spine and pelvis targeted toward the third lumbar vertebra and sacroiliac joint in a side-lying position; the order of these treatments was randomized. Pelvis and thorax kinematic data were used to derive the time-varying lumbar angle in the sagittal plane for each STS trial. The difference between the maximum and minimum lumbar angles during the STS trial determined the sagittal ROM that was used as the biomechanical outcome. Time to complete each STS trial was used as a functional measure of performance. Pre-MT and post-MT values for the lumbar sagittal ROM and time to completion were statistically analysed using paired samples t-tests. Results Data were obtained from 40 participants with 35 useful datasets (NRS = 3.3 ± 1.2; 32.4 ± 9.8 years; 16 females, 19 males). After MT, lumbar sagittal ROM increased by 2.7 ± 5.5 degrees (p = 0.007). Time to complete the STS test decreased by 0.4 ± 0.4 s (p < 0.001). Discussion These findings provide preliminary evidence that MT might influence the biomechanical and functional performance of an STS task in populations with LBP. The MT intervention in this study involved a combination of spinal manipulations and mobilizations. Future work will expand upon these data as a basis for targeted investigations on the effects of either spinal manipulation and mobilization on neuromuscular control and movement in populations with LBP.
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Moving towards a contemporary chiropractic professional identity. Complement Ther Clin Pract 2020; 39:101105. [PMID: 32379646 DOI: 10.1016/j.ctcp.2020.101105] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Accepted: 01/20/2020] [Indexed: 12/18/2022]
Abstract
Since the inception of the chiropractic profession, debate has continued on differing practice objectives and philosophical approaches to patient care. While the political and academic leaders of the profession continue to dominate the discourse, little is known on the perspectives of the everyday practising chiropractor on their professional identity. In this paper, professional identity within the profession of chiropractic was evaluated using a systematised search strategy of the literature from the year 2000 through to May 2019. Initially 562 articles were sourced, of which 24 met the criteria for review. The review confirmed three previously stated professional identity subgroups; two polarised approaches and a centrist or mixed view. The musculoskeletal biomedical approach is in contrast to the vertebral subluxation vitalistic practice approach. Whilst these three main chiropractic identity subtypes exist, within the literature the terminology used to describe them differs. Research aimed at categorising the chiropractic profession identity into exclusive subtypes found that at least 20% of chiropractors have an exclusive vertebral subluxation focus. However, deeper exploration of the literature shows that vertebral subluxation is an important practice consideration for up to 70% of chiropractors. Patient care with a musculoskeletal spine focus is dominant in clinical practice. This review found that practising chiropractors consider themselves to be primary care or primary contact practitioners with a broad scope of practice across a number of patient groups not limited to musculoskeletal management. Across the research, there is a marked difference in the categories of practice objectives evaluated, and future research could examine the relatedness of these. Additionally, future research could explore the professional identity construct over time and within different practice contexts to help facilitate the progression of the profession.
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Meyer AL, Amorim MA, Schubert M, Schweinhardt P, Leboeuf-Yde C. Unravelling functional neurology: does spinal manipulation have an effect on the brain? - a systematic literature review. Chiropr Man Therap 2019; 27:60. [PMID: 31632640 PMCID: PMC6788096 DOI: 10.1186/s12998-019-0265-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2019] [Accepted: 07/02/2019] [Indexed: 11/25/2022] Open
Abstract
Background A recent hypothesis purports that spinal manipulation may cause changes at a brain level. Functional Neurology, a mainly chiropractic approach, promotes the use of spinal manipulation to improve ‘brain function’ as if it were a proven construct. No systematic review has been performed to investigate how well founded this hypothesis is. Objective To investigate whether spinal manipulation has an effect on ‘brain function’ that is associated with any clinical benefits. Method In this systematic review, the literature was searched in PubMed, Embase, and PEDro (final search February 2018). We included randomized or non-randomized controlled studies, in which spinal manipulation was performed to any region of the spine, applied on either symptomatic or asymptomatic humans, and compared to a sham or to another type of control. The outcome measures had to be stated as direct or proxy markers of ‘brain function’. Articles were reviewed blindly by at least two reviewers, using a quality checklist designed for the specific needs of the review. Studies were classified as of ‘acceptable’, ‘medium’, or ‘low’ methodological quality. Results were reported in relation to (i) control intervention (sham, ‘inactive control’, or ‘another physical stimulus’) and (ii) study subjects (healthy, symptomatic, or with spinal pain” subjects/spinal pain”), taking into account the quality. Only results obtained from between-group or between-intervention comparisons were considered in the final analysis. Results Eighteen of 1514 articles were included. Studies were generally of ‘low’ or ‘medium’ methodological quality, most comparing spinal manipulation to a control other than a sham. Thirteen out of the 18 studies could be included in the final analysis. Transitory effects of different types of ‘brain function’ were reported in the three studies comparing spinal manipulation to sham (but of uncertain credibility), in “subclinical neck/spinal pain” subjects or in symptomatic subjects. None of these three studies, of ‘medium’ or ‘acceptable’ quality, investigated whether the neurophysiological effects reported were associated with clinical benefits. The remaining 10 studies, generally of ‘low’ or ‘medium’ quality, compared spinal manipulation to ‘inactive control’ or ‘another physical stimulus’ and similarly reported significant between-group differences but inconsistently. Conclusion The available evidence suggests that changes occur in ‘brain function’ in response to spinal manipulation but are inconsistent across and - sometimes - within studies. The clinical relevance of these changes is unknown. It is therefore premature to promote the use of spinal manipulation as a treatment to improve ‘brain function’. Electronic supplementary material The online version of this article (10.1186/s12998-019-0265-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Anne-Laure Meyer
- 1CIAMS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France.,2CIAMS, Université d'Orléans, 45067 Orléans, France.,Institut Franco Européen de Chiropraxie, 24 Bd Paul Vaillant Couturier, 94200 Ivry sur Seine, France
| | - Michel-Ange Amorim
- 1CIAMS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France.,2CIAMS, Université d'Orléans, 45067 Orléans, France
| | - Martin Schubert
- 4Spinal Cord Injury Center, University Hospital Balgrist, Zürich, Switzerland
| | - Petra Schweinhardt
- 5Integrative Spinal Research Group, Department of Chiropractic Medicine, University Hospital Balgrist and University of Zürich, Zürich, Switzerland
| | - Charlotte Leboeuf-Yde
- 1CIAMS, Univ. Paris-Sud, Université Paris-Saclay, 91405 Orsay Cedex, France.,2CIAMS, Université d'Orléans, 45067 Orléans, France.,Institut Franco Européen de Chiropraxie, 24 Bd Paul Vaillant Couturier, 94200 Ivry sur Seine, France.,6Institute for Regional Health Research, University of Southern Denmark, Odense, Denmark
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Gyer G, Michael J, Inklebarger J, Tedla JS. Spinal manipulation therapy: Is it all about the brain? A current review of the neurophysiological effects of manipulation. JOURNAL OF INTEGRATIVE MEDICINE-JIM 2019; 17:328-337. [DOI: 10.1016/j.joim.2019.05.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 04/22/2019] [Indexed: 12/19/2022]
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Kingett M, Holt K, Niazi IK, Nedergaard RW, Lee M, Haavik H. Increased Voluntary Activation of the Elbow Flexors Following a Single Session of Spinal Manipulation in a Subclinical Neck Pain Population. Brain Sci 2019; 9:brainsci9060136. [PMID: 31212803 PMCID: PMC6628214 DOI: 10.3390/brainsci9060136] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 06/06/2019] [Accepted: 06/11/2019] [Indexed: 02/06/2023] Open
Abstract
To investigate the effects of a single session of spinal manipulation (SM) on voluntary activation of the elbow flexors in participants with subclinical neck pain using an interpolated twitch technique with transcranial magnetic stimulation (TMS), eighteen volunteers with subclinical neck pain participated in this randomized crossover trial. TMS was delivered during elbow flexion contractions at 50%, 75% and 100% of maximum voluntary contraction (MVC) before and after SM or control intervention. The amplitude of the superimposed twitches evoked during voluntary contractions was recorded and voluntary activation was calculated using a regression analysis. Dependent variables were analyzed with two-way (intervention × time) repeated measures ANOVAs. Significant intervention effects for SM compared to passive movement control were observed for elbow flexion MVC (p = 0.04), the amplitude of superimposed twitch (p = 0.04), and voluntary activation of elbow flexors (p =0.03). Significant within-group post-intervention changes were observed for the superimposed twitch (mean group decrease of 20.9%, p < 0.01) and voluntary activation (mean group increase of 3.0%, p < 0.01) following SM. No other significant within-group changes were observed. Voluntary activation of the elbow flexors increased immediately after one session of spinal manipulation in participants with subclinical neck pain. A decrease in the amplitude of superimposed twitch during elbow flexion MVC following spinal manipulation suggests a facilitation of motor cortical output.
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Affiliation(s)
- Mat Kingett
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand.
| | - Kelly Holt
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand.
| | - Imran Khan Niazi
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand.
- Faculty of Health & Environmental Sciences, Health & Rehabilitation Research Institute, AUT University, Auckland 0627, New Zealand.
- Centre for Sensory-Motor Interactions (SMI), Department of Health Science and Technology, Aalborg University, 9220 Aalborg, Denmark.
| | - Rasmus Wiberg Nedergaard
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand.
- Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, 9000 Aalborg, Denmark.
| | - Michael Lee
- Graduate School of Health, Discipline of Physiotherapy, University of Technology Sydney, Sydney, NSW 2007, Australia.
| | - Heidi Haavik
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland 1060, New Zealand.
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Corso M, Mior SA, Batley S, Tuff T, da Silva-Oolup S, Howitt S, Srbely J. The effects of spinal manipulation on performance-related outcomes in healthy asymptomatic adult population: a systematic review of best evidence. Chiropr Man Therap 2019; 27:25. [PMID: 31183076 PMCID: PMC6555009 DOI: 10.1186/s12998-019-0246-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 03/26/2019] [Indexed: 11/28/2022] Open
Abstract
Introduction The effectiveness of spinal manipulative therapy (SMT) for improving athletic performance in healthy athletes is unclear. Assessing the effect of SMT on other performance outcomes in asymptomatic populations may provide insight into the management of athletes where direct evidence may not be available. Our objective was to systematically review the literature on the effect of SMT on performance-related outcomes in asymptomatic adults. Methods MEDLINE, CINAHL, SPORTDiscus, and Cochrane Central Register of Controlled Trials were systematically searched from 1990 to March 23, 2018. Inclusion criteria was any study examining a performance-related outcome of SMT in asymptomatic adults. Methodological quality was assessed using the SIGN criteria. Studies with a low risk of bias were considered scientifically admissible for a best evidence synthesis. We calculated the between group mean change and 95% confidence intervals. Results Of 1415 articles screened, 20 studies had low risk of bias, seven were randomized crossover trials, 10 were randomized controlled trials (RCT) and three were RCT pilot trials. Four studies showed SMT had no effect on physiological parameters at rest or during exercise. There was no effect of SMT on scapular kinematics or transversus abdominus thickness. Three studies identified changes in muscle activation of the upper or lower limb, compared to two that did not. Five studies showed changes in range of motion (ROM). One study showed an increase lumbar proprioception and two identified changes in baropodometric variables after SMT. Sport-specific studies show no effect of SMT except for a small increase in basketball free-throw accuracy. Conclusion The preponderance of evidence suggests that SMT in comparison to sham or other interventions does not enhance performance-based outcomes in asymptomatic adult population. All studies are exploratory with immediate effects. In the few studies suggesting a positive immediate effect, the importance of such change is uncertain. Further high-quality performance specific studies are required to confirm these preliminary findings. Electronic supplementary material The online version of this article (10.1186/s12998-019-0246-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Melissa Corso
- 1Canadian Memorial Chiropractic College, 6100 Leslie Street, North York, ON M2H 3J1 Canada
| | - Silvano A Mior
- 1Canadian Memorial Chiropractic College, 6100 Leslie Street, North York, ON M2H 3J1 Canada
| | - Sarah Batley
- 1Canadian Memorial Chiropractic College, 6100 Leslie Street, North York, ON M2H 3J1 Canada
| | - Taylor Tuff
- 1Canadian Memorial Chiropractic College, 6100 Leslie Street, North York, ON M2H 3J1 Canada
| | - Sophia da Silva-Oolup
- 1Canadian Memorial Chiropractic College, 6100 Leslie Street, North York, ON M2H 3J1 Canada
| | - Scott Howitt
- 1Canadian Memorial Chiropractic College, 6100 Leslie Street, North York, ON M2H 3J1 Canada
| | - John Srbely
- 1Canadian Memorial Chiropractic College, 6100 Leslie Street, North York, ON M2H 3J1 Canada.,2University of Guelph, Guelph, ON Canada
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Spinal Manipulative Therapy Effects in Autonomic Regulation and Exercise Performance in Recreational Healthy Athletes: A Randomized Controlled Trial. Spine (Phila Pa 1976) 2019; 44:609-614. [PMID: 30325889 DOI: 10.1097/brs.0000000000002908] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A randomized, double blind, parallel groups, sham-controlled trial. OBJECTIVE The aim of this study was to analyze the acute effects of spinal manipulative therapy (SMT) on performance and autonomic modulation. SUMMARY OF BACKGROUND DATA The use of SMT is progressively spreading from the clinical to the sporting context owing to its purported ergogenic effects. However, its effects remain unclear. METHODS Thirty-seven male recreational athletes (aged 37 ± 9 years) who had never received SMT were assigned to a sham (n = 19) or actual SMT group (n = 18). Study endpoints included autonomic modulation (heart rate variability), handgrip strength, jumping ability, and cycling performance [8-minute time trial (TT)]. Differences in custom effects between interventions were determined using magnitude-based inferences. RESULTS A significant and very likely lower value of a marker of sympathetic modulation, the stress score, was observed in response to actual compared with sham SMT [P = 0.007; effect size (ES) = -0.97]. A trend toward a significant and likely lower sympathetic:parasympathetic ratio (P = 0.055; ES = -0.96) and a likely higher natural logarithm of the root-mean-square differences of successive heartbeat intervals [(LnRMSSD), P = 0.12; ES = 0.36] was also found with actual SMT. Moreover, a significantly lower mean power output was observed during the TT with actual compared with sham SMT (P = 0.035; ES = -0.28). Nonsignificant (P > 0.05) and unclear or likely trivial differences (ES < 0.2) were found for the rest of endpoints, including handgrip strength, heart rate during the TT, and jump loss thereafter. CONCLUSION A single pre-exercise SMT session induced an acute shift toward parasympathetic dominance and slightly impaired performance in recreational healthy athletes. LEVEL OF EVIDENCE 2.
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Holt K, Niazi IK, Nedergaard RW, Duehr J, Amjad I, Shafique M, Anwar MN, Ndetan H, Turker KS, Haavik H. The effects of a single session of chiropractic care on strength, cortical drive, and spinal excitability in stroke patients. Sci Rep 2019; 9:2673. [PMID: 30804399 PMCID: PMC6389925 DOI: 10.1038/s41598-019-39577-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 01/25/2019] [Indexed: 12/11/2022] Open
Abstract
The objective of this study was to investigate whether a single session of chiropractic care could increase strength in weak plantar flexor muscles in chronic stroke patients. Maximum voluntary contractions (strength) of the plantar flexors, soleus evoked V-waves (cortical drive), and H-reflexes were recorded in 12 chronic stroke patients, with plantar flexor muscle weakness, using a randomized controlled crossover design. Outcomes were assessed pre and post a chiropractic care intervention and a passive movement control. Repeated measures ANOVA was used to asses within and between group differences. Significance was set at p < 0.05. Following the chiropractic care intervention there was a significant increase in strength (F (1,11) = 14.49, p = 0.002; avg 64.2 ± 77.7%) and V-wave/Mmax ratio (F(1,11) = 9.67, p = 0.009; avg 54.0 ± 65.2%) compared to the control intervention. There was a significant strength decrease of 26.4 ± 15.5% (p = 0.001) after the control intervention. There were no other significant differences. Plantar flexor muscle strength increased in chronic stroke patients after a single session of chiropractic care. An increase in V-wave amplitude combined with no significant changes in H-reflex parameters suggests this increased strength is likely modulated at a supraspinal level. Further research is required to investigate the longer term and potential functional effects of chiropractic care in stroke recovery.
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Affiliation(s)
- Kelly Holt
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland, New Zealand
| | - Imran Khan Niazi
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland, New Zealand
- Health & Rehabilitation Research Institute, Auckland University of Technology, Auckland, New Zealand
- SMI, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark
| | | | - Jens Duehr
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland, New Zealand
| | - Imran Amjad
- Riphah International University, Islamabad, Pakistan
| | | | | | - Harrison Ndetan
- University of North Texas Health Science Center, Tylers, Texas, USA
| | | | - Heidi Haavik
- Centre for Chiropractic Research, New Zealand College of Chiropractic, Auckland, New Zealand.
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Chiropractic spinal manipulation alters TMS induced I-wave excitability and shortens the cortical silent period. J Electromyogr Kinesiol 2018; 42:24-35. [PMID: 29936314 DOI: 10.1016/j.jelekin.2018.06.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Revised: 05/12/2018] [Accepted: 06/14/2018] [Indexed: 12/30/2022] Open
Abstract
The objective of this study was to construct peristimulus time histogram (PSTH) and peristimulus frequencygram (PSF) using single motor unit recordings to further characterize the previously documented immediate sensorimotor effects of spinal manipulation. Single pulse transcranial magnetic stimulation (TMS) via a double cone coil over the tibialis anterior (TA) motor area during weak isometric dorsiflexion of the foot was used on two different days in random order; pre/post spinal manipulation (in eighteen subjects) and pre/post a control (in twelve subjects) condition. TA electromyography (EMG) was recorded with surface and intramuscular fine wire electrodes. Three subjects also received sham double cone coil TMS pre and post a spinal manipulation intervention. From the averaged surface EMG data cortical silent periods (CSP) were constructed and analysed. Twenty-one single motor units were identified for the spinal manipulation intervention and twelve single motor units were identified for the control intervention. Following spinal manipulations there was a shortening of the silent period and an increase in the single unit I-wave amplitude. No changes were observed following the control condition. The results provide evidence that spinal manipulation reduces the TMS-induced cortical silent period and increases low threshold motoneurone excitability in the lower limb muscle. These finding may have important clinical implications as they provide support that spinal manipulation can be used to strengthen muscles. This could be followed up on populations that have reduced muscle strength, such as stroke victims.
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Haavik H, Özyurt MG, Niazi IK, Holt K, Nedergaard RW, Yilmaz G, Türker KS. Chiropractic Manipulation Increases Maximal Bite Force in Healthy Individuals. Brain Sci 2018; 8:brainsci8050076. [PMID: 29702550 PMCID: PMC5977067 DOI: 10.3390/brainsci8050076] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 04/17/2018] [Accepted: 04/24/2018] [Indexed: 12/11/2022] Open
Abstract
Recent research has shown that chiropractic spinal manipulation can alter central sensorimotor integration and motor cortical drive to human voluntary muscles of the upper and lower limb. The aim of this paper was to explore whether spinal manipulation could also influence maximal bite force. Twenty-eight people were divided into two groups of 14, one that received chiropractic care and one that received sham chiropractic care. All subjects were naive to chiropractic. Maximum bite force was assessed pre- and post-intervention and at 1-week follow up. Bite force in the chiropractic group increased compared to the control group (p = 0.02) post-intervention and this between-group difference was also present at the 1-week follow-up (p < 0.01). Bite force in the chiropractic group increased significantly by 11.0% (±18.6%) post-intervention (p = 0.04) and remained increased by 13.0% (±12.9%, p = 0.04) at the 1 week follow up. Bite force did not change significantly in the control group immediately after the intervention (−2.3 ± 9.0%, p = 0.20), and decreased by 6.3% (±3.4%, p = 0.01) at the 1-week follow-up. These results indicate that chiropractic spinal manipulation can increase maximal bite force.
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Affiliation(s)
- Heidi Haavik
- Centre for Chiropractic Research, New Zealand College of Chiropractic, 1060 Auckland, New Zealand.
| | | | - Imran Khan Niazi
- Centre for Chiropractic Research, New Zealand College of Chiropractic, 1060 Auckland, New Zealand.
- Health & Rehabilitation Research Institute, Auckland University of Technology, 1142 Auckland, New Zealand.
- SMI, Department of Health Science and Technology, Aalborg University, DK-9220 Aalborg, Denmark.
| | - Kelly Holt
- Centre for Chiropractic Research, New Zealand College of Chiropractic, 1060 Auckland, New Zealand.
| | - Rasmus Wiberg Nedergaard
- Centre for Chiropractic Research, New Zealand College of Chiropractic, 1060 Auckland, New Zealand.
- Dr. Sid E. Williams Center for Chiropractic Research, Life University, Marietta, GA 30060, USA.
| | - Gizem Yilmaz
- School of Medicine, Koç University, 34450 Istanbul, Turkey.
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