ArticleSpine2018
Neural Responses to Physical Characteristics of a High-velocity, Low-amplitude Spinal Manipulation: Effect of Thrust Direction.
Article in Spine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
8 citing papers in PubMed.
- Trial
- The effect on clinical outcomes when targeting spinal manipulation at stiffness or pain sensitivity: a randomized trial.Scientific reports · 2020Trial
- Associations of Treatment Outcome Expectations and Pain Sensitivity after Cervical Spine Manipulation in Patients with Chronic Non-Specific Neck Pain: A Cohort Study.Healthcare (Basel, Switzerland) · 2024Article
- A modern way to teach and practice manual therapy.Chiropractic & manual therapies · 2024Review
- A Systematic Review of Musculoskeletal Mobilization and Manipulation Techniques Used in Veterinary Medicine.Animals : an open access journal from MDPI · 2021Review
- Effects of Thrust Magnitude and Duration on Immediate Postspinal Manipulation Trunk Muscle Spindle Responses.Journal of manipulative and physiological therapeutics · 2021Article
- High-velocity, low-amplitude spinal manipulation training of prescribed forces and thrust duration: A pilot study.The Journal of chiropractic education · 2020Article
- Decreased spontaneous activity and altered evoked nociceptive response of rat thalamic submedius neurons to lumbar vertebra thrust.Experimental brain research · 2017Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
STUDY
designElectrophysiological recordings were obtained from proprioceptors in deep lumbar paraspinal muscles of anesthetized cats during high-velocity low-amplitude spinal manipulation (HVLA-SM).
objectiveTo determine how thrust direction of an HVLA-SM affects neural input from back musculature. SUMMARY OF BACKGROUND DATA: A clinician's ability to apply the thrust of an HVLA-SM in a specified direction is considered an important component of its optimal delivery. However, previous biomechanical studies indicate that the shear force component of the thrust vector is not actually transmitted to paraspinal tissues deep to the thoracolumbar fascia because the skin-fascia interface is frictionless.
methodsNeural activity from muscle spindles in the multifidus and longissimus muscles was recorded from L6 dorsal rootlets in 18 anesthetized cats. After preload to the spinal tissues, HVLA-SMs (100-ms thrust duration) were applied through the intact skin overlying the L6 lamina. Thrusts were applied at angles oriented perpendicularly to the back and obliquely at 15° and 30° medialward or cranialward using a 6 × 6 Latin square design with three replicates. The normal force component was kept constant at 21.3 N. HVLA-SMs were preceded and followed by simulated spinal movement applied to the L6 vertebra. Changes in mean instantaneous discharge frequency (ΔMIF) of muscle spindles were determined both during the thrust and spinal movement.
resultsΔMIFs during the HVLA-SM thrust were significantly greater in response to all thrust directions compared with the preload alone, but there was no difference in ΔMIF for any of the thrust directions during the HVLA-SM. HVLA-SM decreased some of the responses to simulated spinal movement but thrust direction had no effect on these changes.
conclusionThe shear force component of an HVLA-SM's thrust vector is not transmitted to the underlying vertebra sufficient to activate muscle spindles of the attached muscles. Implications for clinical practice and clinical research are discussed. LEVEL OF EVIDENCE: N/A.
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