有不同的腰部和部支比率的活跃外骨支对脊柱肌肉骨负荷和腰部动力学在提升过程中的影响
Niels P Brouwer1, Ali Tabasi1, Feng Hu1
1Department of Human Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands.
Wearable technologies
|January 15, 2025
概括
一种新型的活跃外骨架,具有启动的腰部和部关节,可减少举重任务期间脊柱负荷. 最佳的腰部与部支比率可以减少脊柱的负荷,而不会妨碍自然的起重运动.
科学领域:
- 生物力学 生物力学
- 人与计算机的交互
- 机器人技术 机器人技术 机器人技术
背景情况:
- 目前的背部支外骨架往往限制了自然的运动.
- 现有的单关节设计限制了举起时的腰部曲.
- 这限制了它们在减少脊柱机械负荷方面的有效性.
研究的目的:
- 推出一种新型的活跃外骨架,具有启动的腰部和部关节.
- 评估不同腰部至部 (L/H) 支比对脊柱负荷,运动学和肌肉活动的影响.
- 为了调查基于实时低回转瞬间估计的特定对象控制.
主要方法:
- 八名健康的男性使用外骨或不使用外骨进行了举重任务.
- 外骨条件包括最小阻抗,固定的L/H比 (R0.8,R0.5,R2.0),以及固定的腰部关节 (LF).
- 使用EMG驱动的肌肉骨模型分析了脊柱负荷,腰部动力学和背部肌肉电肌图 (EMG).
主要成果:
- 与最小阻抗相比,L/H比R0.8和R0.5显著降低了脊柱负荷 (4-11%),而不会影响腰部曲.
- 更高的L / H比率 (R2.0) 和固定的腰部关节 (LF) 也减少了脊柱负荷 (8-26%) 但显著限制了腰部曲 (3-27%).
- 最佳的L / H比率减少了活跃的时刻,允许减少脊柱负荷并保持自然的提升行为.
结论:
- 一个与典型的净矩比保持一致的L / H支比率有效地减少脊柱负荷,同时保持正常的起重动力学.
- 高的L/H支比率,正如只在部外骨架中看到的,减少脊柱负荷,但阻碍了自然的提升行为.
- 这项研究强调了平衡的腰部和关节支对于有效和用户友好的外骨设计的重要性.
更多相关视频
08:40Quantifying Arms and Legs Contributions during Repetitive Electrically-Assisted Sit-To-Stand Exercise in Paraplegics: A Pilot Study
Published on: November 11, 2022
1.1K
06:28Biomechanical Changes Related to Low Back Pain: An Innovative Tool for Movement Pattern Assessment and Treatment Evaluation in Rehabilitation
Published on: December 13, 2024
423
相关概念视频
01:30General Structure of a Vertebra
A typical vertebra, with the exception of the sacrum and coccyx, consists of a body, a vertebral arch, and seven different projections termed processes. The anterior portion of the vertebrae, the body, supports about half the body’s weight. The vertebral bodies progressively increase in size and thickness from the cervical region to the lumbar region of the vertebral column. The intervertebral discs present between the bodies of adjacent vertebrae firmly unites them, forming a continuous column.
01:16Bones of the Lower Limb: Femur and Patella
The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the neck...
01:27Exercise and Muscle Performance
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
01:27Muscles of the Vertebral Column
The back muscles that lie deep into the thoracolumbar fascia are called intrinsic or true back muscles. These muscles are divided into four layers: superficial, intermediate, deep, and deepest layers.
Superficial Layer:
The superficial layer consists primarily of the splenius muscles, which include the splenius capitis and splenius cervicis. These muscles are mainly responsible for the head and cervical spine movements, including extension, rotation, and lateral bending. The splenius capitis...
Superficial Layer:
The superficial layer consists primarily of the splenius muscles, which include the splenius capitis and splenius cervicis. These muscles are mainly responsible for the head and cervical spine movements, including extension, rotation, and lateral bending. The splenius capitis...
01:23Muscles that Move the Leg
The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed to...
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed to...
01:20Exercise and Cardiovascular Response
Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...