The Application of Parallel Robotics to Investigate the Effect of Lumbar Bracing on Trunk Muscle Activity
Lumbar bracing is prescribed frequently for disability caused by low back pain; however, investigations into this practice demonstrate a range of patient outcomes. This inconsistency may arise from the practice of employing voluntary, single-axis trunk movements when investigating braces. Alternativ...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Applied Bionics and Biomechanics |
| Online Access: | http://dx.doi.org/10.1080/11762322.2010.512433 |
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| author | Gregory N. Kawchuk Narasimha G. Prasad Jonathan Glass Carolyn Knight Serena Third Daniel Timmermans |
| author_facet | Gregory N. Kawchuk Narasimha G. Prasad Jonathan Glass Carolyn Knight Serena Third Daniel Timmermans |
| author_sort | Gregory N. Kawchuk |
| collection | DOAJ |
| description | Lumbar bracing is prescribed frequently for disability caused by low back pain; however, investigations into this practice demonstrate a range of patient outcomes. This inconsistency may arise from the practice of employing voluntary, single-axis trunk movements when investigating braces. Alternatively, this study employed a parallel robot to create a standardised, multi-axis testing environment. Surface electromyographic (sEMG) data were collected from the trunk of 24 asymptomatic participants, who were seated on the robot, tilted to 15°, then circumducted while attempting to maintain an upright posture. Multiple trials were performed for three randomised conditions: non-braced, soft-material brace and stiff-material brace. As expected, the sEMG activity was significantly reduced in the majority of muscle responses (201/240). Unexpectedly, a paradoxical increase in the sEMG activity was observed in 39/240 responses. While lumbar bracing reduces the sEMG activity on average, these data suggest the existence of an infrequent paradoxical response that may provide a possible explanation for the discordant results observed in previous bracing investigations. |
| format | Article |
| id | doaj-art-5a9618e29c3546c399b265708bcb9a33 |
| institution | Kabale University |
| issn | 1176-2322 1754-2103 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Applied Bionics and Biomechanics |
| spelling | doaj-art-5a9618e29c3546c399b265708bcb9a332025-02-03T05:49:40ZengWileyApplied Bionics and Biomechanics1176-23221754-21032010-01-017424325110.1080/11762322.2010.512433The Application of Parallel Robotics to Investigate the Effect of Lumbar Bracing on Trunk Muscle ActivityGregory N. Kawchuk0Narasimha G. Prasad1Jonathan Glass2Carolyn Knight3Serena Third4Daniel Timmermans5Department of Physical Therapy, University of Alberta, Edmonton, CanadaDepartment of Math and Statistical Sciences, University of Alberta, Edmonton, CanadaDepartment of Physical Therapy, University of Alberta, Edmonton, CanadaDepartment of Physical Therapy, University of Alberta, Edmonton, CanadaDepartment of Physical Therapy, University of Alberta, Edmonton, CanadaDepartment of Physical Therapy, University of Alberta, Edmonton, CanadaLumbar bracing is prescribed frequently for disability caused by low back pain; however, investigations into this practice demonstrate a range of patient outcomes. This inconsistency may arise from the practice of employing voluntary, single-axis trunk movements when investigating braces. Alternatively, this study employed a parallel robot to create a standardised, multi-axis testing environment. Surface electromyographic (sEMG) data were collected from the trunk of 24 asymptomatic participants, who were seated on the robot, tilted to 15°, then circumducted while attempting to maintain an upright posture. Multiple trials were performed for three randomised conditions: non-braced, soft-material brace and stiff-material brace. As expected, the sEMG activity was significantly reduced in the majority of muscle responses (201/240). Unexpectedly, a paradoxical increase in the sEMG activity was observed in 39/240 responses. While lumbar bracing reduces the sEMG activity on average, these data suggest the existence of an infrequent paradoxical response that may provide a possible explanation for the discordant results observed in previous bracing investigations.http://dx.doi.org/10.1080/11762322.2010.512433 |
| spellingShingle | Gregory N. Kawchuk Narasimha G. Prasad Jonathan Glass Carolyn Knight Serena Third Daniel Timmermans The Application of Parallel Robotics to Investigate the Effect of Lumbar Bracing on Trunk Muscle Activity Applied Bionics and Biomechanics |
| title | The Application of Parallel Robotics to Investigate the Effect of Lumbar Bracing on Trunk Muscle Activity |
| title_full | The Application of Parallel Robotics to Investigate the Effect of Lumbar Bracing on Trunk Muscle Activity |
| title_fullStr | The Application of Parallel Robotics to Investigate the Effect of Lumbar Bracing on Trunk Muscle Activity |
| title_full_unstemmed | The Application of Parallel Robotics to Investigate the Effect of Lumbar Bracing on Trunk Muscle Activity |
| title_short | The Application of Parallel Robotics to Investigate the Effect of Lumbar Bracing on Trunk Muscle Activity |
| title_sort | application of parallel robotics to investigate the effect of lumbar bracing on trunk muscle activity |
| url | http://dx.doi.org/10.1080/11762322.2010.512433 |
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