Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Relative Motion Analysis using Rotating Axes01:25

Relative Motion Analysis using Rotating Axes

870
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
870
Relative Motion Analysis using Rotating Axes-Problem Solving01:29

Relative Motion Analysis using Rotating Axes-Problem Solving

690
Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
Here, in order to determine the magnitude of velocity and acceleration for point...
690
Curvilinear Motion: Polar Coordinates01:27

Curvilinear Motion: Polar Coordinates

812
In polar coordinates, the motion of a particle follows a curvilinear path. The radial coordinate symbolized as 'r,' extends outward from a fixed origin to the particle, while the angular coordinate, 'θ,' measured in radians, represents the counterclockwise angle between a fixed reference line and the radial line connecting the origin to the particle.
The particle's location is described using a unit vector along the radial direction. Deriving the particle's position...
812
Assessment of radial pulse01:11

Assessment of radial pulse

1.3K
Assessment of Radial Pulse
The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
1.3K
Vector Components in the Cartesian Coordinate System01:29

Vector Components in the Cartesian Coordinate System

26.7K
Vectors are usually described in terms of their components in a coordinate system. Even in everyday life, we naturally invoke the concept of orthogonal projections in a rectangular coordinate system. For example, if someone gives you directions for a particular location, you will be told to go a few km in a direction like east, west, north, or south, along with the angle in which you are supposed to move. In a rectangular (Cartesian) xy-coordinate system in a plane, a point in a plane is...
26.7K
Central-Force Motion01:17

Central-Force Motion

736
The central force system operates by exerting a force on an object directed towards a fixed point, typically the origin, with the force magnitude determined by the object's distance from this fixed point. In the context of an object with mass 'm,' polar coordinates are employed to express the equation of motion. Notably, the azimuthal component of force is nonexistent in this system. A comprehensive rewrite and integration of this equation reveal that the product of the squared...
736

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Correction: Decreased spinal inhibition leads to undiversified locomotor patterns.

Biological cybernetics·2026
Same author

Unlocking mobility: A kinetic perspective on the 30-second chair stand test in older adults.

Journal of bodywork and movement therapies·2026
Same author

Upper-Body Neuromechanical Coordination Strategies During Fatiguing Sustained Dead Hangs in Climbers.

European journal of sport science·2026
Same author

Ankle Joint Biomechanics in Recreational Runners with Resolved and Incident Plantar Fasciitis: A One-Year Prospective 4HAIE Cohort Study.

Scandinavian journal of medicine & science in sports·2026
Same author

Immediate effects of lateral wedge insoles on inter-joint coordination in women with knee osteoarthritis: A comparative study of footwear.

Clinical biomechanics (Bristol, Avon)·2026
Same author

Biomechanical insights into Achilles tendinopathy risk and protection in runners: a large prospective study 4HAIE.

British journal of sports medicine·2026
Same journal

Scaling contact force parameters across body size, limb count, and number of contact spheres.

Journal of biomechanics·2026
Same journal

The extrapolated body center of mass predicts subsequent foot placement choice during dynamic single-leg landings.

Journal of biomechanics·2026
Same journal

Lateral reactive stepping responses differ between individuals with and without transfemoral amputation.

Journal of biomechanics·2026
Same journal

Effect of foot orthoses on the biomechanics of stair ascent and descent in chronic metatarsalgia.

Journal of biomechanics·2026
Same journal

Reconstruction of gait variables from 3D foot geometry and sparse plantar pressure landmarks using deep learning.

Journal of biomechanics·2026
Same journal

Characterizing the relationship between isolated extrinsic lower limb muscle activity and Talocrural, Subtalar, and midtarsal joint kinematics under an unweighted condition.

Journal of biomechanics·2026
查看所有相关文章

相关实验视频

Updated: Jan 12, 2026

Author Spotlight: Enhancing Remote Rehabilitation with Virtual Reality and Electromyography
04:06

Author Spotlight: Enhancing Remote Rehabilitation with Virtual Reality and Electromyography

Published on: January 12, 2024

1.0K

辐射协调变量:用于量化运动稳定性的辐射向量编码.

Luis Mochizuki1, Joseph Hamill2, Juliana Exel3

  • 1School of Arts, Sciences and Humanities, University of São Paulo, São Paulo, Brazil.

Journal of biomechanics
|November 1, 2025
PubMed
概括
此摘要是机器生成的。

辐射向量编码 (rVC) 是一种新的3D方法,用于分析运动协调. 它揭示了关节变异性如何随着速度和年龄而变化,为功能适应和控制策略提供了洞察力.

关键词:
协调 协调 协调运动变化的可变性.稳定的稳定性 稳定的稳定性矢量编码的编码方法

更多相关视频

Substantiating Appropriate Motion Capture Techniques for the Assessment of Nordic Walking Gait and Posture in Older Adults
09:37

Substantiating Appropriate Motion Capture Techniques for the Assessment of Nordic Walking Gait and Posture in Older Adults

Published on: May 12, 2016

9.2K
Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI
14:55

Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI

Published on: April 18, 2011

14.2K

相关实验视频

Last Updated: Jan 12, 2026

Author Spotlight: Enhancing Remote Rehabilitation with Virtual Reality and Electromyography
04:06

Author Spotlight: Enhancing Remote Rehabilitation with Virtual Reality and Electromyography

Published on: January 12, 2024

1.0K
Substantiating Appropriate Motion Capture Techniques for the Assessment of Nordic Walking Gait and Posture in Older Adults
09:37

Substantiating Appropriate Motion Capture Techniques for the Assessment of Nordic Walking Gait and Posture in Older Adults

Published on: May 12, 2016

9.2K
Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI
14:55

Methods to Quantify Pharmacologically Induced Alterations in Motor Function in Human Incomplete SCI

Published on: April 18, 2011

14.2K

科学领域:

  • 生物力学和运动科学 生物力学和运动科学
  • 人类运动分析 人类运动分析
  • 量化生理学 量化生理学

背景情况:

  • 传统的修改向量编码 (mVC) 使用平面角来评估联合协调.
  • 目前的方法很难识别影响任务执行的特定关节合.
  • 需要对运动协调和可变性的3D分析.

研究的目的:

  • 介绍辐射向量编码 (rVC),mVC的3D扩展.
  • 开发一个新的度量,辐射协调变量 (CVr),以量化3D运动协调.
  • 使用rVC分析步态协调和与年龄相关的差异.

主要方法:

  • 将关节轨迹从笛卡儿坐标转换为球形坐标.
  • 从骨盆,部,膝盖,脚和脚部随时间的辐射成分波动计算的CVr.
  • 应用rVC对42名健康成年人的步态数据,跨越了各种步行速度.

主要成果:

  • 随着速度的增加,心血管回路率增加,在年轻成年人的远端关节中更高,这表明了适应性灵活性.
  • 年长的成年人表现出脚和膝盖的CVr降低,这表明控制更受限制.
  • 证实了显著的相互作用 rVC捕捉了功能协调和与年龄相关的适应.

结论:

  • rVC提供了3D运动协调和可变性的高效,空间集成的分析.
  • rVC避免了传统mVC固有的多关节系统的复杂性.
  • 这种可扩展的方法适用于协调分析的各种任务和人群.