在低重力下工作场所的三维身体质量中心
1Space Innovation, Swiss Federal Institute of Technology in Lausanne, 1015 Lausanne, Switzerland.
Bioengineering (Basel, Switzerland)
|October 28, 2023
概括
在低重力下,人体的质量中心会以不同的方式向下和向后移动. 这项研究比较了模拟1/6g和1g的坐着工作,揭示了人体工程学和健康的关键生物力学差异.
科学领域:
- 生物力学 生物力学
- 人类因素工程 人类因素工程
- 空间生理学 空间生理学
背景情况:
- 在低重力下研究人类坐姿动态对于太空探索和地面应用至关重要.
- 了解减重力如何影响人体质量中心对于设计安全高效的工作环境至关重要.
- 以前的研究对低重力下坐着作业时质量中心动态的数据有限.
研究的目的:
- 确定在模拟月球 (1/6 g) 和地球 (1 g) 重力下工作的坐着个体的质量中心动态的差异.
- 在静态和动态任务中分析重力水平和身体姿势变化之间的关系.
- 提供关于低重力对人类生物力学和肌肉骨健康的影响的见解.
主要方法:
- 利用无标记运动捕捉系统追踪32名参与者的质量中心.
- 在模拟的1/6g (月球) 和1g (地球) 条件下比较身体系统反应.
- 测量的质量中心在任务的开始,中间和结束时会发生变化,以考虑疲劳.
主要成果:
- 在男性和女性的质量转移中心向下 (近距离轴) 和重力水平之间发现了显著的正相关性 (p < 0.01).
- 女性在身体向后倾斜 (前后轴) 和重力水平 (p < 0.01) 之间表现出显著的正相关性.
- 这些发现突出了坐着姿势控制中的重力依赖的变化.
结论:
- 低重力显著影响人群中心在坐着工作期间的质量动力学,与不同的性别特异反应.
- 结果为改善工作场所人体工程学,增强身体稳定性和在减轻重力的设备设计提供了有价值的数据.
- 了解这些生物力学变化对于减轻低重力环境中肌肉骨疾病的风险至关重要.
更多相关视频
相关概念视频
Finding the Center of Gravity
3.5K
The center of gravity of a body is an imaginary point where the body's total weight is assumed to be concentrated, and the body is perfectly balanced. The center of the mass of a body is a point at which the whole of the mass of the body appears to be concentrated. If the acceleration due to gravity, g, has the same value at all points on a body, its center of gravity is identical to its center of mass. The center of gravity of homogeneous bodies such as a sphere, cube, or rectangular plate...
3.5K
Center of Gravity
5.0K
The center of gravity (COG) of an object is the point where the object's total weight is considered to be concentrated. Knowing the location of the center of gravity is useful when predicting the behavior of a moving object or designing static structures. In a uniform gravitational field, the center of gravity is similar to the center of mass (COM); yet, these two points can be positioned differently. For example, the Moon's center of mass lies very close to its geometric center, but...
5.0K
Center of Mass
1.2K
The center of mass is the point at which the total mass of an object can be said to be concentrated. It is a fundamental principle in mechanics and physics that applies to all objects regardless of their shape or size. The center of gravity is the point at which an object’s weight appears to be concentrated and can be used to balance the object perfectly.
The knowledge of the center of mass can also help us to describe and predict the motion of objects. For example, when a ball is thrown...
The knowledge of the center of mass can also help us to describe and predict the motion of objects. For example, when a ball is thrown...
1.2K
Internal Forces and Center of Gravity
363
Internal forces and the center of gravity are fundamental concepts in mechanics, playing a crucial role in understanding the behavior and stability of structures and objects under various conditions. A comprehensive understanding of these principles is essential for engineers, architects, and designers to create safe and efficient systems.
Internal forces are generated within a body due to the interaction between its particles. These forces can be categorized into tension, compression, and...
Internal forces are generated within a body due to the interaction between its particles. These forces can be categorized into tension, compression, and...
363
Center of Mass: Introduction
14.5K
Any object that obeys Newton's second law of motion is made up of a large number of infinitesimally small particles. Objects in motion can be as simple as atoms or as complex as gymnasts performing in the Olympics. The motion of such objects is described about a point called the center of mass of the object. The center of mass of an object is a point that acts as if the whole mass is concentrated at that point. The center of mass of an object with a large number of infinitesimally small...
14.5K
Work Done Over an Inclined Plane
2.9K
The center-of-mass framework helps to easily describe the work done on rigid bodies. Since the internal forces in a rigid body do no work, they can be ignored, and the external forces can be considered in the work-energy theorem.
The work done by gravity to move a rigid body, or the work done by an opposing force to move a rigid body against gravity, can be calculated using the center-of-mass framework. It is the line integral of the force of gravity over the path, considered positive if...
The work done by gravity to move a rigid body, or the work done by an opposing force to move a rigid body against gravity, can be calculated using the center-of-mass framework. It is the line integral of the force of gravity over the path, considered positive if...
2.9K


