Investigating the Effect of L4 and L5 Lumbar Posterior -Anterior Mobilisations on Measures of Lumbar and Hamstring Range of Motion, and Electromyography Activity of the Erector Spinae and Hamstring
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 18
- 试验地点
- 2
- 主要终点
- Electromyography of Erector Spinae
研究概览
简要总结
To compare the immediate and short-term effects of L4 and L5 Unilateral Posterior Anterior (UPA) Mobilisations on the lumbar and hamstring range of motion and EMG activity of the Erector Spinae and Hamstring muscles.
Using a pre-test post-test crossover design subjects lumbar flexion and active knee extension with be recorded prior to and following unilateral zygapophyseal joint mobilisations. Measures will be taken immediately after and then 5, 10, 15, 20, 30 and 60 minutes intervals post intervention. Mobilisation force will be measured via force plates to ensure consistent mobilisation pressure.
Following data collection statistical analysis will be undertaken to analyse any potential benefit of lumbar mobilisations to influence the EMG activity of the Erector Spinae and Hamstrings. Functional assessment of lumbar range of motion and hamstring range of motion to be conducted and analyse any effect on movement
详细描述
25-30 participants will be tested in the Olympia Building Biomechanics Laboratory at Teesside University.
Due to the nature of the cross-over design participants will attend the laboratory twice, one week apart.
Baseline measurements of Lumbar flexion and hamstring range of motions will be taken.
During lumbar flexion participants will be asked to stand with their arms at their side (anatomical position) and feet 8cm part. The tester will demonstrate the flexion motion then request the subject bends forwards are far as is possible, maintaining knee extension. A previous reliability study (Page 2012) has indicated four lumbar flexion movements repetitions were required to prevent the effects of passive stiffness improving the range. On the fourth trial the measurement via the modified schober test. This requires skin markers to be placed 10cm above and 5cm below the lumbar-sacral junction and the change distance calculated at end range. This will be conducted by the lead author, Paul Chesterton, a physiotherapist with appropriate insurance and qualifications.
Hamstring extensibility will be measured via the active knee extension test. Test leg will be determined by dominant/kicking leg. Subjects will be secured into anterior pelvic tilt via a belt and asked to extend the knee to maximal length. A purpose made wooden wedge will provide a right angle surface to ensure the hip is held at 90 degrees. The digital inclinometer will record the change in degrees of active knee extension post-test. The knee will be extended to end range, determined by the subject, with the hip, knee and ankle maintained in neutral. The non-dominant leg will be secured to the bed via a belt.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- Female
- 接受健康志愿者
- 是
入选标准
- •Age between 18-
- •Participants willing to provide inform consent. Participants who successfully complete the medical questionnaire. No current lower back or lower limb pathology.
排除标准
- •Current symptomatic low back pain or lower limb pathology. Participants with altered neurodynamic symptoms. Previous lumbar surgery. Under supervision of another health practionare Pregnant participants Contraindications or precautions to spinal mobilisation
- •malignancy, inflammatory or infectious processes involving the spine or peripheral joints,
- •osteoporosis,
- •spinal disorders including spondylolisthesis, ankylosing spondylitis, spinal fusion
研究组 & 干预措施
Mobilisations
The intervention will consist of unilateral lumbar mobilisations at the L4 and L5 level in a Posterior Anterior direction. The plinth will rest on force plates to allow the authors to analyse the force placed through the vertebrae. Grade three mobilisations will be applied for a one minute period three times at both L4 and L5 level. Each level will be determined by a passive physiological intervertebral movement. Participants will receive the mobilisations at L5 first for one minute followed by L4. This is an appropriate dose for mobilisation application (Maitland, 2013). This process will be carried out three times.
Following the intervention all measure lumbar flexion, hamstring extensibility and sEMG activity will be recorded immediately, 5, 10, 15, 20, 30, 60 minutes post application as a single test.
干预措施: Lumbar Mobilisations (Other)
Control
All outcome measures (lumbar/hamstring range of motion; EMG activity of the Biceps Femoris and Erector Spinae) will be measured. The control group will then receive no intervention and be asked to lie supine on a plinth for the treatment duration before having the outcome measures reassessed.
结局指标
主要结局
Electromyography of Erector Spinae
时间窗: 5, 10, 15, 20, 30, 60 minutes post application as a single test.
Record electromyography (SEMG) activity in the muscles of the participants in this study the Zerowire Cometa system will be used. Every electrode unit is equipped with a small unit for signal processing and transmission to the data receiver. The electrodes are single use disposable, self-adhesive silver chloride dual snap on electrodes pre-set at a distance of 20mm. All participants will have the skin prepared prior to the noraxon electrode being placed on their skin. Electrodes will be attached according to European recommendation (seniam) at the Paraspinal muscles (L1 region). A baseline sEMG will then be taken whilst the participant is at rest for 60seconds. The electrode placement and sEMG recording will be taken by a qualified laboratory technician employed by Teesside University.
Electromyography of Biceps Femoris
时间窗: 5, 10, 15, 20, 30, 60 minutes post application as a single test.
Record electromyography (SEMG) activity in the muscles of the participants in this study the Zerowire Cometa system will be used. Every electrode unit is equipped with a small unit for signal processing and transmission to the data receiver. The electrodes are single use disposable, self-adhesive silver chloride dual snap on electrodes pre-set at a distance of 20mm. All participants will have the skin prepared prior to the noraxon electrode being placed on their skin. Electrodes will be attached according to European recommendation (seniam) to the Biceps Femoris of the dominate leg. A baseline sEMG will then be taken whilst the participant is at rest for 60seconds. The electrode placement and sEMG recording will be taken by a qualified laboratory technician employed by Teesside University.
Lumbar Range of Motion
时间窗: 5, 10, 15, 20, 30, 60 minutes post application as a single test.
During lumbar flexion participants will be asked to stand with their arms at their side (anatomical position) and feet 8cm part. The tester will demonstrate the flexion motion then request the subject bends forwards are far as is possible, maintaining knee extension. A previous reliability study (Page 2012) has indicated four lumbar flexion movements repetitions were required to prevent the effects of passive stiffness improving the range. On the fourth trial the measurement via the modified schober test. This requires skin markers to be placed 10cm above and 5cm below the lumbar-sacral junction and the change distance calculated at end range.
Hamstring Range of Motion
时间窗: 5, 10, 15, 20, 30, 60 minutes post application as a single test.
Hamstring extensibility will be measured via the active knee extension test. Test leg will be determined by dominant/kicking leg. Subjects will be secured into anterior pelvic tilt via a belt and asked to extend the knee to maximal length. A purpose made wooden wedge will provide a right angle surface to ensure the hip is held at 90 degrees. The digital inclinometer will record the change in degrees of active knee extension post-test. The knee will be extended to end range, determined by the subject, with the hip, knee and ankle maintained in neutral. The non-dominant leg will be secured to the bed via a belt.
次要结局
未报告次要终点
研究者
Paul Chesterton
Senior Lecturer Sport and Exercise
Teesside University