Immediate Effect of Maitland Grade III++ Central Posteroanterior Mobilization on Erector Spinae and Multifidus Muscle Stiffness in Healthy Adults: A Randomized Crossover Trial
试验速览
- 阶段
- 不适用
- 状态
- 招募中
- 入组人数
- 25
- 试验地点
- 1
- 主要终点
- Change in Erector Spinae Muscle Stiffness
研究概览
简要总结
This randomized controlled crossover study will investigate the immediate effect of central posteroanterior lumbar mobilization on the intrinsic stiffness of the erector spinae and multifidus muscles in healthy adults without low back pain. Twenty-four participants will complete two experimental visits in randomized order. During one visit, participants will receive Maitland Grade III++ central posteroanterior mobilization at the L4 vertebral level, while during the other visit they will receive a sham mobilization condition involving gentle rhythmic pressure. Muscle stiffness will be assessed using shear wave elastography immediately before and after each intervention.
详细描述
The study will be designed as a randomized controlled crossover trial to investigate the immediate effects of manual spinal mobilization on lumbar paraspinal muscle stiffness in healthy adults without low back pain. Each participant will attend two separate study visits and will receive both experimental conditions in a randomized order.
In the experimental condition, Maitland Grade III++ central posteroanterior mobilization will be applied over the spinous process of L4. The intervention will consist of three 60-second sets of passive rhythmic oscillatory pressures performed at approximately 2 Hz, with 30-second rest periods between sets. In the control condition, participants will receive a sham mobilization presented as a Grade I mobilization technique. The sham intervention will follow the same timing structure but will consist of gentle rhythmic pressure over the L4 spinous process.
Intrinsic muscle stiffness of the right erector spinae and multifidus muscles will be assessed using shear wave elastography. Three measurements will be obtained immediately before and after each intervention, and the mean value will be expressed in kilopascals. Measurements will be performed in a standardized prone position at the L4-L5 level.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Basic Science
- 盲法
- Single (Participant)
入排标准
- 年龄范围
- 18 Years 至 45 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Men and women aged 21 to 38 years.
- •Resident of the Republic of Slovenia.
- •No current low back pain.
- •No contraindications to lumbar manual mobilization.
- •Ability to assume and maintain the required prone testing position.
- •Provision of written informed consent.
排除标准
- •Current low back pain.
- •Spondylolisthesis.
- •Severe osteoporosis.
- •Spinal stenosis.
- •Lumboischialgia or other significant structural spinal deformity.
- •Fibromyalgia.
- •Recent spinal surgery or lumbar spinal fixation.
- •Cauda equina syndrome.
- •Nerve root compression associated with neurological deficits.
- •Malignancy.
- •Recent relevant trauma.
- •Joint instability.
- •Active rheumatoid arthritis.
- •Acute local or systemic infection.
- •Long-term local corticosteroid use.
- •Inability to assume or maintain the required testing position.
研究组 & 干预措施
Mobilization-Sham Sequence
Participants receive Maitland Grade III++ central posteroanterior mobilization during the first study visit and sham mobilization during the second study visit.
干预措施: Maitland Grade III++ Central Posteroanterior Mobilization (Procedure)
Mobilization-Sham Sequence
Participants receive Maitland Grade III++ central posteroanterior mobilization during the first study visit and sham mobilization during the second study visit.
干预措施: Sham Lumbar Mobilization (Procedure)
Sham-Mobilization Sequence
Participants receive sham mobilization during the first study visit and Maitland Grade III++ central posteroanterior mobilization during the second study visit.
干预措施: Maitland Grade III++ Central Posteroanterior Mobilization (Procedure)
Sham-Mobilization Sequence
Participants receive sham mobilization during the first study visit and Maitland Grade III++ central posteroanterior mobilization during the second study visit.
干预措施: Sham Lumbar Mobilization (Procedure)
结局指标
主要结局
Change in Erector Spinae Muscle Stiffness
时间窗: Immediately before and immediately after each intervention session
Intrinsic stiffness of the right erector spinae muscle is assessed using shear wave elastography and expressed as shear modulus in kilopascals (kPa). Three measurements are obtained at each time point and averaged. The outcome is the change from the pre-intervention to the immediate post-intervention measurement.
Change in Multifidus Muscle Stiffness
时间窗: Immediately before and immediately after each intervention session
Intrinsic stiffness of the right multifidus muscle is assessed using shear wave elastography and expressed as shear modulus in kilopascals (kPa). Three measurements are obtained at each time point and averaged. The outcome is the change from the pre-intervention to the immediate post-intervention measurement.
次要结局
- Change in Erector Spinae Muscle Stiffness Assessed by Myotonometry(Immediately before and immediately after each intervention session)
- Change in Multifidus Muscle Stiffness Assessed by Myotonometry(Immediately before and immediately after each intervention session)
研究者
Žiga Kozinc
PhD
University of Primorska