全球纵向活性菌株能量密度 (GLASED):年轻和资深运动员之间的年龄和性别差异
David H MacIver1,2, Henggui Zhang3, Christopher Johnson4
1Biological Physics Group, Department of Astronomy and Physics, University of Manchester, Manchester, UK. david.maciver@manchester.ac.uk.
Echo research and practice
|July 14, 2024
概括
心声学现在可以测量全球纵向活性应变能量密度 (GLASED),这是一个关键的心脏功能标志物. 玻璃在年轻运动员中较高,随着年龄的增长而下降,显示了运动员心脏查的潜力.
科学领域:
- 心脏病学 心脏病学
- 运动医学 运动医学
- 医疗成像医学成像
背景情况:
- 全球纵向活性应变能量密度 (GLASED) 评估心肌功能,是预后标志物.
- 目前的GLASED测量依赖于MRI,限制了其广泛使用.
- 这项研究探讨了用于GLASED评估的心声回声学.
研究的目的:
- 评估使用心声回声学测量GLASED的可行性.
- 调查运动员中GLASED的年龄和性别相关差异.
- 确定GLASED作为心脏查工具的实用性.
主要方法:
- 心声学研究包括男性对照,年轻运动员 (男性/女性) 和资深运动员 (男性/女性).
- 玻璃是根据心肌压力和应变计算的.
- 对不同人口群体的GLASED值进行比较.
主要成果:
- 在年轻的男性运动员 (2.40 kJ/m3) 中,GLASED的水平最高.
- 在女性退伍军人 (1.96 kJ/m3) 中,GLASED 是最低的.
- 随着年龄的增长,男女的玻璃减少,而经验丰富的运动员的性别差异也减少了.
结论:
- 心声学是可行的,以测量玻璃.
- 年龄和性别影响GLASED,表明心肌生理差异.
- 玻璃可能有助于选运动员的心肌病.
相关概念视频
Strain-Energy Density
390
Understanding the strain energy density in materials under axial load is crucial for evaluating their mechanical behavior and durability. When a rod is subjected to such a load, it elongates and stores energy, known as strain energy, as potential energy within the material. This energy is measured in terms of energy per unit volume.
In the elastic region of a material, the relationship between the stress and the strain is linear and follows Hooke's Law. The strain energy density in this...
In the elastic region of a material, the relationship between the stress and the strain is linear and follows Hooke's Law. The strain energy density in this...
390
Elastic Strain Energy for Normal Stresses
151
Strain energy quantifies the energy stored within a material due to deformation under loading conditions, a fundamental concept in materials science and engineering. The strain energy can be modeled when a material is subjected to axial loading with uniformly distributed stress. In this scenario, the stress experienced by the material is the internal force divided by the cross-sectional area, and the strain induced is directly proportional to this stress through the modulus of elasticity.
If...
If...
151
Strain Energy
403
Strain energy is a fundamental concept in the field of materials science and structural engineering, describing the energy absorbed by a material or structure when it is deformed under load.
Consider a rod that is fixed at one end and subjected to an axial force at the free end. This axial force induces stress within the rod, leading to its elongation. As the axial force increases, so does the elongation of the rod, illustrating a direct relationship between the force applied and the resulting...
Consider a rod that is fixed at one end and subjected to an axial force at the free end. This axial force induces stress within the rod, leading to its elongation. As the axial force increases, so does the elongation of the rod, illustrating a direct relationship between the force applied and the resulting...
403
Strain and Elastic Modulus
3.6K
The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or geometry under tensile, volume (also known as bulk), or shear stress, respectively, and is a dimensionless quantity. The strain experienced by a body under tensile or compressive stress is called tensile or compressive strain, respectively. In contrast, the strain experienced under bulk stress and shear stress is known as volume and shear...
3.6K


