在年轻的温血马中,感知侧向性和与垂直运动不对称性的相关性
Anna Leclercq1, Johan Lundblad1, Emma Persson-Sjodin1
1Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden.
PloS one
|July 7, 2023
概括
热血马中垂直不对称的高患病率是常见的,但它们的起源仍然不清楚. 这项研究没有发现这些不对称性与年轻马的运动横向性之间有令人信服的联系.
科学领域:
- 马类生物力学 马类生物力学
- 动物的运动 动物的运动
- 兽医整形医学 兽医整形医学
背景情况:
- 在温血骑马中经常观察到垂直不对称性,但其潜在原因尚未得到充分理解.
- 了解这些不对称性对于马的福利和表现至关重要,因为它们可能会影响马的健康和运动质量.
研究的目的:
- 在年轻的温血骑马中调查垂直身体不对称性和运动横向性之间的潜在相关性.
- 探索骑手感知的侧向性与对称不对称和侧向性的客观测量之间的关系.
主要方法:
- 使用惯性测量单位系统对65只年轻的热血马进行了客观步态分析,分别进行了3次访问.
- 骑手问卷评估了感知马的侧向性,前肢延伸偏好测试评估了40匹马的运动侧向性.
- 通过测量头部和骨盆垂直移位差异 (HDmin,HDmax,PDmin,PDmax) 来量化垂直不对称.
主要成果:
- 60-70%的马匹表现出超过临床值的垂直不对称性;22%的马匹在运动测试中表现出明显的侧向偏好.
- 在感知后肢软弱和更高的骨盆垂直移位最小值 (PDmin) 之间发现了一个弱,具有统计学意义的相关性.
- 没有发现骑手感知的侧向性和垂直不对称性之间,也没有发现摩托车侧向性和不对称性参数之间的其他显著相关性.
结论:
- 这项研究没有找到令人信服的证据来支持年轻温血马的垂直不对称性和运动横向性之间的关联.
- 需要进一步的研究来阐明垂直不对称的起源及其与运动控制和横向性的关系.
相关概念视频
Unsymmetric Bending - Angle of Neutral Axis
354
Unsymmetrical bending occurs when a structural member is subjected to bending moments in a plane that does not align with the member's principal axes. This scenario typically arises in beams and other structural components when loads are applied at non-ideal angles, introducing complexities in stress analysis.
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
When a bending moment is applied at an angle θ concerning the vertical axis of a symmetrical member, it can be resolved into components along the member's principal...
354
Major Somatic Sensory Pathways
1.0K
Sensory impulses related to touch, pressure, vibration, and proprioception from various body parts, such as the limbs, trunk, neck, and posterior head, travel to the cerebral cortex through the posterior column-medial lemniscus pathway. The pathway’s name derives from the two white-matter tracts that convey the impulses: the spinal cord's posterior column and the brainstem's medial lemniscus. First-order sensory neurons extend their axons into the spinal cord, forming the...
1.0K
Rotation of Asymmetric Top
940
By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if there is no spherical symmetry. Since most rigid bodies are not spherically symmetric, these require special treatment.
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
940
Anatomical Movements
7.3K
Anatomical movements refer to the various actions or motions that can be performed by the body's joints and muscles. These movements are described using specific terms to provide a standardized way of discussing and understanding the range of motion at different joints.
Here are some common anatomical movements:
Flexion and extension motions are in the sagittal (anterior–posterior) plane of motion. These movements take place at the shoulder, hip, elbow, knee, wrist,...
Here are some common anatomical movements:
Flexion and extension motions are in the sagittal (anterior–posterior) plane of motion. These movements take place at the shoulder, hip, elbow, knee, wrist,...
7.3K
Relative Motion Analysis using Rotating Axes
489
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...
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...
489
Eccentric Axial Loading in a Plane of Symmetry
235
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
235


