Cargando…
Vertical stiffness is not related to anterior cruciate ligament elongation in professional rugby union players
BACKGROUND: Novel research surrounding anterior cruciate ligament (ACL) injury is necessary because ACL injury rates have remained unchanged for several decades. An area of ACL risk mitigation which has not been well researched relates to vertical stiffness. The relationship between increased vertic...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BMJ Publishing Group
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5125423/ https://www.ncbi.nlm.nih.gov/pubmed/27900192 http://dx.doi.org/10.1136/bmjsem-2016-000150 |
_version_ | 1782469976546869248 |
---|---|
author | Serpell, Benjamin G Scarvell, Jennie M Pickering, Mark R Ball, Nick B Perriman, Diana Warmenhoven, John Smith, Paul N |
author_facet | Serpell, Benjamin G Scarvell, Jennie M Pickering, Mark R Ball, Nick B Perriman, Diana Warmenhoven, John Smith, Paul N |
author_sort | Serpell, Benjamin G |
collection | PubMed |
description | BACKGROUND: Novel research surrounding anterior cruciate ligament (ACL) injury is necessary because ACL injury rates have remained unchanged for several decades. An area of ACL risk mitigation which has not been well researched relates to vertical stiffness. The relationship between increased vertical stiffness and increased ground reaction force suggests that vertical stiffness may be related to ACL injury risk. However, given that increased dynamic knee joint stability has been shown to be associated with vertical stiffness, it is possible that modification of vertical stiffness could help to protect against injury. We aimed to determine whether vertical stiffness is related to measures known to load, or which represent loading of, the ACL. METHODS: This was a cross-sectional observational study of 11 professional Australian rugby players. Knee kinematics and ACL elongation were measured from a 4-dimensional model of a hopping task which simulated the change of direction manoeuvre typically observed when non-contact ACL injury occurs. The model was generated from a CT scan of the participant's knee registered frame by frame to fluoroscopy images of the hopping task. Vertical stiffness was calculated from force plate data. RESULTS: There was no association found between vertical stiffness and anterior tibial translation (ATT) or ACL elongation (r=−0.05; p=0.89, and r=−0.07; p=0.83, respectively). ATT was related to ACL elongation (r=0.93; p=0.0001). CONCLUSIONS: Vertical stiffness was not associated with ACL loading in this cohort of elite rugby players but a novel method for measuring ACL elongation in vivo was found to have good construct validity. |
format | Online Article Text |
id | pubmed-5125423 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | BMJ Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-51254232016-11-29 Vertical stiffness is not related to anterior cruciate ligament elongation in professional rugby union players Serpell, Benjamin G Scarvell, Jennie M Pickering, Mark R Ball, Nick B Perriman, Diana Warmenhoven, John Smith, Paul N BMJ Open Sport Exerc Med Research BACKGROUND: Novel research surrounding anterior cruciate ligament (ACL) injury is necessary because ACL injury rates have remained unchanged for several decades. An area of ACL risk mitigation which has not been well researched relates to vertical stiffness. The relationship between increased vertical stiffness and increased ground reaction force suggests that vertical stiffness may be related to ACL injury risk. However, given that increased dynamic knee joint stability has been shown to be associated with vertical stiffness, it is possible that modification of vertical stiffness could help to protect against injury. We aimed to determine whether vertical stiffness is related to measures known to load, or which represent loading of, the ACL. METHODS: This was a cross-sectional observational study of 11 professional Australian rugby players. Knee kinematics and ACL elongation were measured from a 4-dimensional model of a hopping task which simulated the change of direction manoeuvre typically observed when non-contact ACL injury occurs. The model was generated from a CT scan of the participant's knee registered frame by frame to fluoroscopy images of the hopping task. Vertical stiffness was calculated from force plate data. RESULTS: There was no association found between vertical stiffness and anterior tibial translation (ATT) or ACL elongation (r=−0.05; p=0.89, and r=−0.07; p=0.83, respectively). ATT was related to ACL elongation (r=0.93; p=0.0001). CONCLUSIONS: Vertical stiffness was not associated with ACL loading in this cohort of elite rugby players but a novel method for measuring ACL elongation in vivo was found to have good construct validity. BMJ Publishing Group 2016-11-01 /pmc/articles/PMC5125423/ /pubmed/27900192 http://dx.doi.org/10.1136/bmjsem-2016-000150 Text en Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/ This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/ |
spellingShingle | Research Serpell, Benjamin G Scarvell, Jennie M Pickering, Mark R Ball, Nick B Perriman, Diana Warmenhoven, John Smith, Paul N Vertical stiffness is not related to anterior cruciate ligament elongation in professional rugby union players |
title | Vertical stiffness is not related to anterior cruciate ligament elongation in professional rugby union players |
title_full | Vertical stiffness is not related to anterior cruciate ligament elongation in professional rugby union players |
title_fullStr | Vertical stiffness is not related to anterior cruciate ligament elongation in professional rugby union players |
title_full_unstemmed | Vertical stiffness is not related to anterior cruciate ligament elongation in professional rugby union players |
title_short | Vertical stiffness is not related to anterior cruciate ligament elongation in professional rugby union players |
title_sort | vertical stiffness is not related to anterior cruciate ligament elongation in professional rugby union players |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5125423/ https://www.ncbi.nlm.nih.gov/pubmed/27900192 http://dx.doi.org/10.1136/bmjsem-2016-000150 |
work_keys_str_mv | AT serpellbenjaming verticalstiffnessisnotrelatedtoanteriorcruciateligamentelongationinprofessionalrugbyunionplayers AT scarvelljenniem verticalstiffnessisnotrelatedtoanteriorcruciateligamentelongationinprofessionalrugbyunionplayers AT pickeringmarkr verticalstiffnessisnotrelatedtoanteriorcruciateligamentelongationinprofessionalrugbyunionplayers AT ballnickb verticalstiffnessisnotrelatedtoanteriorcruciateligamentelongationinprofessionalrugbyunionplayers AT perrimandiana verticalstiffnessisnotrelatedtoanteriorcruciateligamentelongationinprofessionalrugbyunionplayers AT warmenhovenjohn verticalstiffnessisnotrelatedtoanteriorcruciateligamentelongationinprofessionalrugbyunionplayers AT smithpauln verticalstiffnessisnotrelatedtoanteriorcruciateligamentelongationinprofessionalrugbyunionplayers |