在体育登中,用于不同握力类型的奇特指关节运动
Gabriella Fischer1,2, Andreas Schweizer1, Peter Wolf3
1Department of Orthopaedics, Hand Surgery Division, Balgrist University Hospital, Zurich, Switzerland.
Sports biomechanics
|February 5, 2026
概括
奇特的手指运动在登中很常见,而不仅仅是偶然的. 这些运动,特别是在校园期间,可能会增加登山者轮伤害的风险.
科学领域:
- 运动医学 运动医学
- 生物力学 生物力学
- 登山伤害 登山伤害
背景情况:
- 奇特的手指运动是已知的风险因素,轮破裂在登山者.
- 以前,这些运动主要与意外事件 (如滑落) 相关.
- 奇特的运动作为正常的登模式的普遍性仍然没有被检查.
研究的目的:
- 为了研究在典型的登任务中奇特的手指运动的发生和特征.
- 为了确定异常运动是否是正规爬运动模式的组成部分.
主要方法:
- 记录了11名精英登山者的动力学和相互作用力量.
- 登山者执行了四种不同的登任务:开放手,半,抓,和campusing.
- 靠近间关节 (PIP) 曲角度的变化 (ΔPIPP2) 被计算出来以识别异常运动 (ΔPIPP2 <0°).
主要成果:
- 在所有握手类型中,在持有阶段的59-73%发生了古怪的手指运动.
- 负平均 ΔPIPP2 值,表明异常运动,观察到开放手 (-1.5°), (-2.9°) 和校园 (-6.0°) 的抓地.
- 在campusing期间记录了最高的加载率,而紧抓地则表现出最低的.
结论:
- 登山者经常表现出奇特的手指运动作为一致的模式,不仅仅是在意外事件或疲劳时.
- 这些发现表明,古怪的运动是登生物力学固有的组成部分.
- 需要进行进一步的研究,以将这些运动模式与个体受滑轮伤害的风险相关联.
相关概念视频
Movement Joints in Buildings
352
Movement joints in buildings are essential design elements that accommodate inevitable motions caused by various factors such as temperature changes, moisture content variations, and structural deflections. These motions, if not considered in design and construction, can lead to unsightly or dangerous damage. Movement joints are incorporated in different forms to manage these stresses and allow materials to move without causing distress.
The simplest type of movement joints, working joints, are...
The simplest type of movement joints, working joints, are...
352
Types of Building Separation Joints
622
Building separation joints divide large or complex building structures into smaller, discrete units that can move independently. These joints are categorized into three types: volume-change joints, settlement joints, and seismic separation joints.
Volume-change joints address the effects of expansion and contraction due to temperature and moisture variations. They are strategically placed at discontinuities in a building's mass where cracking is most likely and are spaced about 150 to 200...
Volume-change joints address the effects of expansion and contraction due to temperature and moisture variations. They are strategically placed at discontinuities in a building's mass where cracking is most likely and are spaced about 150 to 200...
622
Eccentric Loading
975
Eccentric loading is a crucial concept in the study of structural engineering and mechanics, particularly when analyzing the stability and stress distribution in columns. Unlike centric loading, where the force is applied along the centroidal axis, causing uniform compression, eccentric loading occurs when a force is applied off-center. This off-center application introduces not only direct compressive stress but also bending stress, significantly influencing the column's behavior under...
975
Eccentricity of an Ellipse
350
An ellipse is a fundamental conic section defined by the constant sum of distances from any point on its curve to two fixed points, known as the foci. This geometric property can be physically demonstrated using a pencil, string, and two pins. By anchoring the string at both ends and maintaining it taut with a pencil, one can trace the outline of an ellipse.The shape and extent of the ellipse are determined by its eccentricity, e, defined as the ratio of the distance between the center and a...
350
General Case of Eccentric Axial Loading
513
Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from symmetrical bending, which are essential for designing structures to withstand different loading conditions.
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical...
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical...
513
Structural Joints: Synovial Joints
7.0K
Synovial joints are the most common type of joint in the body. A key structural characteristic for a synovial joint is the presence of a joint cavity. This fluid-filled space is where the articulating surfaces of the bones contact each other. Also, unlike fibrous or cartilaginous joints, the articulating bone surfaces at a synovial joint are not directly connected to each other with fibrous connective tissue or cartilage. This gives the bones of a synovial joint the ability to move smoothly...
7.0K


