Chronic Adaptations to Spinal Flexion Exposure in Crane Operators
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 30
- 试验地点
- 2
- 主要终点
- Change in muscle stiffness
研究概览
简要总结
An experimental study, which will aim to compare changes of trunk mechanical properties and neuromuscular control following spinal flexion exposure in crane operators and control subjects.
详细描述
Our experimental study will include 40 participants, more specifically 15 crane operators and 15 control subjects. All participants will complete a 60-min protocol of intermittent trunk flexion. Measurements of trunk mechanical properties and neuromuscular control will be performed prior to and following the 60-min protocol.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 30 Years 至 55 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Crane operators: employed as crane operators for more than 3 years
- •Occupational workers with a predominantly non static job (e.g. combination of sitting and standing)
排除标准
- •History of chronic low back pain
- •Episode of acute low back pain
- •Hip injury in the past six months
- •Previous spine, pelvis or hip surgery
- •Hypermobility, diagnosed with the Beighton score
- •High intensity resistance training (> 75 % of 1 repetition maximum) more than two times a week
- •Control group: sporting or recreational activities, that include repetitive spinal flexion or maintenance of a flexed posture (for example cycling or rowing).
结局指标
主要结局
Change in muscle stiffness
时间窗: 90 minutes
Muscle stiffness will be measured using ultrasound-based shear wave elastography during prone lying and forward stooping. Erector spinae and multifidus muscle stiffness will be expressed as the shear modulus value in kilopascals.
次要结局
- Change in trunk extension maximal strength(90 minutes)
- Change in range of motion(90 minutes)
- Change in muscle activity(90 minutes)
- Change in length of the spine(90 minutes)
- Change in lumbar lordosis angle(90 minutes)
研究者
Matej Voglar
Assistant professor
University of Primorska