Cargando…
Relationship between Biomechanical Characteristics of Spinal Manipulation and Neural Responses in an Animal Model: Effect of Linear Control of Thrust Displacement versus Force, Thrust Amplitude, Thrust Duration, and Thrust Rate
High velocity low amplitude spinal manipulation (HVLA-SM) is used frequently to treat musculoskeletal complaints. Little is known about the intervention's biomechanical characteristics that determine its clinical benefit. Using an animal preparation, we determined how neural activity from lumba...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi Publishing Corporation
2013
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3563165/ https://www.ncbi.nlm.nih.gov/pubmed/23401713 http://dx.doi.org/10.1155/2013/492039 |
_version_ | 1782258159819161600 |
---|---|
author | Reed, William R. Cao, Dong-Yuan Long, Cynthia R. Kawchuk, Gregory N. Pickar, Joel G. |
author_facet | Reed, William R. Cao, Dong-Yuan Long, Cynthia R. Kawchuk, Gregory N. Pickar, Joel G. |
author_sort | Reed, William R. |
collection | PubMed |
description | High velocity low amplitude spinal manipulation (HVLA-SM) is used frequently to treat musculoskeletal complaints. Little is known about the intervention's biomechanical characteristics that determine its clinical benefit. Using an animal preparation, we determined how neural activity from lumbar muscle spindles during a lumbar HVLA-SM is affected by the type of thrust control and by the thrust's amplitude, duration, and rate. A mechanical device was used to apply a linear increase in thrust displacement or force and to control thrust duration. Under displacement control, neural responses during the HVLA-SM increased in a fashion graded with thrust amplitude. Under force control neural responses were similar regardless of the thrust amplitude. Decreasing thrust durations at all thrust amplitudes except the smallest thrust displacement had an overall significant effect on increasing muscle spindle activity during the HVLA-SMs. Under force control, spindle responses specifically and significantly increased between thrust durations of 75 and 150 ms suggesting the presence of a threshold value. Thrust velocities greater than 20–30 mm/s and thrust rates greater than 300 N/s tended to maximize the spindle responses. This study provides a basis for considering biomechanical characteristics of an HVLA-SM that should be measured and reported in clinical efficacy studies to help define effective clinical dosages. |
format | Online Article Text |
id | pubmed-3563165 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-35631652013-02-11 Relationship between Biomechanical Characteristics of Spinal Manipulation and Neural Responses in an Animal Model: Effect of Linear Control of Thrust Displacement versus Force, Thrust Amplitude, Thrust Duration, and Thrust Rate Reed, William R. Cao, Dong-Yuan Long, Cynthia R. Kawchuk, Gregory N. Pickar, Joel G. Evid Based Complement Alternat Med Research Article High velocity low amplitude spinal manipulation (HVLA-SM) is used frequently to treat musculoskeletal complaints. Little is known about the intervention's biomechanical characteristics that determine its clinical benefit. Using an animal preparation, we determined how neural activity from lumbar muscle spindles during a lumbar HVLA-SM is affected by the type of thrust control and by the thrust's amplitude, duration, and rate. A mechanical device was used to apply a linear increase in thrust displacement or force and to control thrust duration. Under displacement control, neural responses during the HVLA-SM increased in a fashion graded with thrust amplitude. Under force control neural responses were similar regardless of the thrust amplitude. Decreasing thrust durations at all thrust amplitudes except the smallest thrust displacement had an overall significant effect on increasing muscle spindle activity during the HVLA-SMs. Under force control, spindle responses specifically and significantly increased between thrust durations of 75 and 150 ms suggesting the presence of a threshold value. Thrust velocities greater than 20–30 mm/s and thrust rates greater than 300 N/s tended to maximize the spindle responses. This study provides a basis for considering biomechanical characteristics of an HVLA-SM that should be measured and reported in clinical efficacy studies to help define effective clinical dosages. Hindawi Publishing Corporation 2013 2013-01-20 /pmc/articles/PMC3563165/ /pubmed/23401713 http://dx.doi.org/10.1155/2013/492039 Text en Copyright © 2013 William R. Reed et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Reed, William R. Cao, Dong-Yuan Long, Cynthia R. Kawchuk, Gregory N. Pickar, Joel G. Relationship between Biomechanical Characteristics of Spinal Manipulation and Neural Responses in an Animal Model: Effect of Linear Control of Thrust Displacement versus Force, Thrust Amplitude, Thrust Duration, and Thrust Rate |
title | Relationship between Biomechanical Characteristics of Spinal Manipulation and Neural Responses in an Animal Model: Effect of Linear Control of Thrust Displacement versus Force, Thrust Amplitude, Thrust Duration, and Thrust Rate |
title_full | Relationship between Biomechanical Characteristics of Spinal Manipulation and Neural Responses in an Animal Model: Effect of Linear Control of Thrust Displacement versus Force, Thrust Amplitude, Thrust Duration, and Thrust Rate |
title_fullStr | Relationship between Biomechanical Characteristics of Spinal Manipulation and Neural Responses in an Animal Model: Effect of Linear Control of Thrust Displacement versus Force, Thrust Amplitude, Thrust Duration, and Thrust Rate |
title_full_unstemmed | Relationship between Biomechanical Characteristics of Spinal Manipulation and Neural Responses in an Animal Model: Effect of Linear Control of Thrust Displacement versus Force, Thrust Amplitude, Thrust Duration, and Thrust Rate |
title_short | Relationship between Biomechanical Characteristics of Spinal Manipulation and Neural Responses in an Animal Model: Effect of Linear Control of Thrust Displacement versus Force, Thrust Amplitude, Thrust Duration, and Thrust Rate |
title_sort | relationship between biomechanical characteristics of spinal manipulation and neural responses in an animal model: effect of linear control of thrust displacement versus force, thrust amplitude, thrust duration, and thrust rate |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3563165/ https://www.ncbi.nlm.nih.gov/pubmed/23401713 http://dx.doi.org/10.1155/2013/492039 |
work_keys_str_mv | AT reedwilliamr relationshipbetweenbiomechanicalcharacteristicsofspinalmanipulationandneuralresponsesinananimalmodeleffectoflinearcontrolofthrustdisplacementversusforcethrustamplitudethrustdurationandthrustrate AT caodongyuan relationshipbetweenbiomechanicalcharacteristicsofspinalmanipulationandneuralresponsesinananimalmodeleffectoflinearcontrolofthrustdisplacementversusforcethrustamplitudethrustdurationandthrustrate AT longcynthiar relationshipbetweenbiomechanicalcharacteristicsofspinalmanipulationandneuralresponsesinananimalmodeleffectoflinearcontrolofthrustdisplacementversusforcethrustamplitudethrustdurationandthrustrate AT kawchukgregoryn relationshipbetweenbiomechanicalcharacteristicsofspinalmanipulationandneuralresponsesinananimalmodeleffectoflinearcontrolofthrustdisplacementversusforcethrustamplitudethrustdurationandthrustrate AT pickarjoelg relationshipbetweenbiomechanicalcharacteristicsofspinalmanipulationandneuralresponsesinananimalmodeleffectoflinearcontrolofthrustdisplacementversusforcethrustamplitudethrustdurationandthrustrate |