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相关概念视频

Stress on an Oblique Plane01:16

Stress on an Oblique Plane

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Understanding stress on an oblique plane under axial loading is pivotal in material mechanics. This analysis offers insight into a material's durability and strength, which is crucial for civil engineering and structural design. Axial loading refers to force application along the material's central axis, causing compression or elongation and leading to normal stress. Normal stress occurs when a force acts perpendicularly to the material's area, resulting in compressive or tensile...
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Gross Anatomy of Skeletal Muscles01:12

Gross Anatomy of Skeletal Muscles

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The connective tissues play a significant role in arranging the muscle fibers into a hierarchical structure that forms a complete muscle. Consider a muscle like the bicep brachii, commonly called the bicep. This muscle comprises thousands of muscle fibers enclosed by a protective layer of connective tissue called the endomysium. The endomysium is primarily composed of reticular fibers, a type of thin collagen fiber. It allows the exchange of nutrients and waste products at the fiber level,...
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Eccentric Axial Loading in a Plane of Symmetry01:16

Eccentric Axial Loading in a Plane of Symmetry

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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.
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相关实验视频

Updated: Jul 23, 2025

3D Ultrasound Imaging: Fast and Cost-effective Morphometry of Musculoskeletal Tissue
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优化外部斜面的规范化方法:一个横截面研究.

Luk Devorski1,2, Andrew Skibski1,2, David H Fukuda2,3

  • 1Rehabilitation, Athletic Assessment & Dynamic Imaging (READY) Laboratory, Institute of Exercise Physiology and Rehabilitation Science, University of Central Florida, Orlando, FL, USA.

Journal of back and musculoskeletal rehabilitation
|July 17, 2023
PubMed
概括

横躺式桌面技术是比罗马椅子技术更好的方法来确定核心练习的最大自愿同度收缩 (MVIC). 这确保了临床使用的准确%MVIC值.

关键词:
核心稳定性 核心稳定性同位数收缩收缩是什么意思表面电力学图 (surface electromyography) 是一种表面电力学图.

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科学领域:

  • 生物力学 生物力学
  • 运动生理学 运动生理学
  • 康复科学 康复科学 康复科学

背景情况:

  • 建立可靠的最大自愿同度收缩 (MVIC) 规范化对于比较核心运动强度 (%MVIC) 至关重要.
  • 准确的%MVIC值指导预防性和康复性炼干预.

研究的目的:

  • 为了比较侧卧侧侧干屈曲和罗马椅子侧侧干屈曲正常化技术之间的外部斜面的%MVIC.
  • 为了确定最优的MVIC规范化方法用于核心练习评估.

主要方法:

  • 22名参与者执行了两种MVIC规范化技术,随后进行了五项核心练习.
  • 分析包括前5秒,最后5秒和整体持续时间的平均MVIC%.
  • ANOVA在练习和MVIC技术之间比较了正常化的%MVIC (p=0.05).

主要成果:

  • 横躺式桌子技术产生了%MVIC值始终低于100%,与罗马椅子技术不同.
  • 在两种技术 (57.87 ± 38.51%MVIC) 之间,在干升高侧板的最后5秒内观察到一个显著的差异 (p<0.001).

结论:

  • 侧卧式表技术似乎是确定%MVIC的最佳方法.
  • 这一发现支持对核心强化炼的更准确的评估和处方.