Effects and Mechanisms of Specific Trunk Exercises in Low Back Pain
16 de octubre de 2017 actualizado por: Sharon M. Henry, University of Vermont
Low back pain affects 80% of Americans at some time during their lives.
Although recovery usually occurs within 6 months, there is a 50% recurrence within one year's time.
It has long been thought that poor control of trunk muscle may lead to abnormal forces across the spine, which then damage local spinal structures, thus, leading to low back pain.
However, the investigators know little about the function of specific trunk muscles in healthy subjects during various activities of daily life.
Furthermore, the precise muscle dysfunction associated with low back pain has not been well characterized at all.
In addition, the investigators know little about which exercise protocol is most beneficial for particular subgroups of people with low back pain.
Thus, the purposes of this study are to learn more about: 1) how trunk muscles are affected by low back pain; 2) which exercises might be most beneficial for people with certain kinds of low back pain; and 3) how these exercises influence trunk muscle function.
By having a better understanding of which trunk muscles are affected by low back pain, rehabilitation specialists can design exercise programs and therapeutic interventions that are more specific and more effective.
Descripción general del estudio
Estado
Estado
Terminado
Condiciones
Condiciones
Intervención / Tratamiento
Intervención / Tratamiento
Tipo de estudio
Tipo de estudio
Intervencionista
Inscripción (Actual)
Inscripción
58
Fase
Fase
- No aplica
Contactos y Ubicaciones
Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.
Ubicaciones de estudio
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Vermont
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Burlington, Vermont, Estados Unidos, 05405
- Human Motion Analysis Laboratory
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Criterios de participación
Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.
Criterio de elegibilidad
Criterio de elegibilidad
Edades elegibles para estudiar
21 años a 55 años (Adulto)
Acepta Voluntarios Saludables
Sí
Géneros elegibles para el estudio
Todos
Descripción
Inclusion Criteria:
- a history of chronic LBP with or without recurrences for a minimum of 12 months
- between 21 - 55 years of age
- able to stand and walk without assistance
- have an Oswestry Disability Score of 19% or higher
Exclusion Criteria:
- any major structural spinal deformity including scoliosis, kyphosis, or stenosis
- spinal fracture or dislocation
- osteoporosis
- ankylosing spondylitis
- rheumatoid arthritis
- disc herniation with corroborating clinical signs and symptoms
- serious spinal complications such as tumor or infection
- previous spinal surgery
- frank neurological loss, i.e., weakness and sensory loss
- pain or paresthesia below the knee
- etiology of LBP other than the lumbar spine, e.g., hip joint
- history of neurological disease which required hospitalization
- active treatment for cancer
- history of unresolved cancer
- pregnancy or less than 6 months post-partum or less than 6 months post weaning
- magnified symptom-behavior
- worker's compensation or disability case
- in litigation for the LBP problem
- have a BMI ≥ 30
Plan de estudios
Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Doble
Número de brazos
2
Armas e Intervenciones
Grupo de participantes/brazoGrupo de participantes/brazo |
Intervención / TratamientoIntervención / Tratamiento |
|---|---|
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Experimental: Stabilization
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The stabilization exercise protocol consists of exercises focused on improving the ability of trunk muscles to stabilize the spine, beginning with training to isolate the deeper abdominal muscles as well as deep dorsal trunk muscles.
Then patients were progressed to exercises that added leverage of the limbs while maintaining the co-contraction of the deeper abdominal muscles and deep dorsal trunk muscles while breathing normally.
Various positions (e.g., supine and quadruped positions) were used to challenge the patients based on their tolerance.
Finally, patients were progressed to exercises in more functional positions that included tasks/activities that were reported as challenging and/or painful; patients performed the tasks at the speed demanded by the particular task.
Maintenance of the co-contraction of deep trunk muscles was emphasized during these functional activities.
Otros nombres:
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Comparador activo: Strengthening and Conditioning
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This protocol contained trunk strengthening and endurance exercises.
It consisted of 3 phases: 1) initial strengthening of trunk flexors/extensors in single plane movements, 2) trunk and lower-extremity stretching as well as progression of trunk-strengthening exercises to include multi-planar trunk movements.
Aerobic exercises were progressed as tolerated and patient education about body biomechanics were reinforced, and 3) trunk-strengthening exercises under dynamic conditions (e.g., unstable support surface and in multi-planar trunk movements).
During the 10 week protocol, exercises became more challenging, and each subject had to complete at least the first phase before moving onto the next phase in order to be included in post-testing analyses.
There was no specific focus on the deep abdominal or deep dorsal trunk muscles during any of these exercises.
Otros nombres:
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¿Qué mide el estudio?
Medidas de resultado primarias
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
|
Change From Baseline to 11 Weeks in Oswestry Disability Scale (0-100%)
Periodo de tiempo: Baseline and 11 weeks
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Disability; Scale 0-100% Lower score is considered better/improved Negative value indicates improvement
|
Baseline and 11 weeks
|
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Change From Baseline to 6 Months in Oswestry Disability Scale (0-100%)
Periodo de tiempo: Baseline and 6 Months
|
Disability; Sacle 0-100% Lower score is considered better/improved; Negative value indicates improvement
|
Baseline and 6 Months
|
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Change From 11 Weeks to 6 Months in Oswestry Disability Scale (0-100%)
Periodo de tiempo: 11 Weeks and 6 Months
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Disability; Sacle 0-100% Lower score is considered better/improved; Negative value indicates improvement
|
11 Weeks and 6 Months
|
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Change From Baseline to 11 Weeks in Numeric Pain Rating Scale (0-10 Points)
Periodo de tiempo: Baseline and 11 weeks
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Current Pain Scale 0-10 Lower score is better/improved; Negative value indicates improvement
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Baseline and 11 weeks
|
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Change From Baseline to 6 Months in Numeric Pain Rating Scale (0-10 Points)
Periodo de tiempo: Baseline and 6 months
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Current Pain Scale 0-10 Lower score is better/improved; Negative value indicates improvement
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Baseline and 6 months
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Change From 11 Weeks to 6 Months in Numeric Pain Rating Scale (0-10 Points)
Periodo de tiempo: 11 weeks and 6 months
|
Current Pain Scale 0-10 Lower score is better/improved; Negative value indicates improvement
|
11 weeks and 6 months
|
Colaboradores e Investigadores
Aquí es donde encontrará personas y organizaciones involucradas en este estudio.
Patrocinador
Patrocinador
Colaboradores
Colaboradores
Investigadores
Investigadores
- Investigador principal: Sharon M Henry, PT, PhD, University of Vermont
Publicaciones y enlaces útiles
La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.
Publicaciones Generales
- Jacobs JV, Henry SM, Jones SL, Hitt JR, Bunn JY. A history of low back pain associates with altered electromyographic activation patterns in response to perturbations of standing balance. J Neurophysiol. 2011 Nov;106(5):2506-14. doi: 10.1152/jn.00296.2011. Epub 2011 Jul 27.
- Jones SL, Henry SM, Raasch CC, Hitt JR, Bunn JY. Individuals with non-specific low back pain use a trunk stiffening strategy to maintain upright posture. J Electromyogr Kinesiol. 2012 Feb;22(1):13-20. doi: 10.1016/j.jelekin.2011.10.006. Epub 2011 Nov 18.
- Stokes IA, Gardner-Morse MG, Henry SM. Abdominal muscle activation increases lumbar spinal stability: analysis of contributions of different muscle groups. Clin Biomech (Bristol, Avon). 2011 Oct;26(8):797-803. doi: 10.1016/j.clinbiomech.2011.04.006. Epub 2011 May 14.
- Stokes IA, Gardner-Morse MG, Henry SM. Intra-abdominal pressure and abdominal wall muscular function: Spinal unloading mechanism. Clin Biomech (Bristol, Avon). 2010 Nov;25(9):859-66. doi: 10.1016/j.clinbiomech.2010.06.018. Epub 2010 Jul 23.
- Jones SL, Henry SM, Raasch CC, Hitt JR, Bunn JY. Responses to multi-directional surface translations involve redistribution of proximal versus distal strategies to maintain upright posture. Exp Brain Res. 2008 May;187(3):407-17. doi: 10.1007/s00221-008-1312-1. Epub 2008 Feb 26.
- Teyhen DS, Gill NW, Whittaker JL, Henry SM, Hides JA, Hodges P. Rehabilitative ultrasound imaging of the abdominal muscles. J Orthop Sports Phys Ther. 2007 Aug;37(8):450-66. doi: 10.2519/jospt.2007.2558.
- Henry SM, Teyhen DS. Ultrasound imaging as a feedback tool in the rehabilitation of trunk muscle dysfunction for people with low back pain. J Orthop Sports Phys Ther. 2007 Oct;37(10):627-34. doi: 10.2519/jospt.2007.2555.
- Anderson-Worth SG, Henry SM, Bunn JY. Use of real time ultrasound feedback enhances learning the abdominal hollowing exercise in patients with low back pain. New Zealand J Physiotherapy. 35(1):4-11, 2007.
- Henry SM, Hitt JR, Jones SL, Bunn JY. Decreased limits of stability in response to postural perturbations in subjects with low back pain. Clin Biomech (Bristol, Avon). 2006 Nov;21(9):881-92. doi: 10.1016/j.clinbiomech.2006.04.016. Epub 2006 Jun 27.
- Henry SM, Westervelt KC. The use of real-time ultrasound feedback in teaching abdominal hollowing exercises to healthy subjects. J Orthop Sports Phys Ther. 2005 Jun;35(6):338-45. doi: 10.2519/jospt.2005.35.6.338.
- Lomond KV, Henry SM, Hitt JR, DeSarno MJ, Bunn JY. Altered postural responses persist following physical therapy of general versus specific trunk exercises in people with low back pain. Man Ther. 2014 Oct;19(5):425-32. doi: 10.1016/j.math.2014.04.007. Epub 2014 Apr 24.
Fechas de registro del estudio
Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.
Fechas importantes del estudio
Inicio del estudio
Inicio del estudio
1 de marzo de 2003
Finalización primaria (Actual)
Finalización primaria
1 de junio de 2008
Finalización del estudio (Actual)
Finalización del estudio
1 de junio de 2008
Fechas de registro del estudio
Enviado por primera vez
Enviado por primera vez
1 de junio de 2012
Primero enviado que cumplió con los criterios de control de calidad
Primero enviado que cumplió con los criterios de control de calidad
4 de junio de 2012
Publicado por primera vez (Estimar)
Publicado por primera vez
5 de junio de 2012
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización publicada
18 de octubre de 2017
Última actualización enviada que cumplió con los criterios de control de calidad
Última actualización enviada que cumplió con los criterios de control de calidad
16 de octubre de 2017
Última verificación
Última verificación
1 de octubre de 2017
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
Otros números de identificación del estudio
- NIH/NCMRR/R01-HD040909
Plan de datos de participantes individuales (IPD)
¿Planea compartir datos de participantes individuales (IPD)?
NO
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