罗马尼亚农村与城市地区女学生膝盖曲器和延伸器力和动力学变量的差异
Ioana Mădălina Petre1, Hadi Nobari2,3, Mircea Boscoianu1
1Department of Industrial Engineering and Management, Transilvania University of Brasov, Brasov, Romania.
Frontiers in physiology
|May 20, 2024
概括
与城市同行相比,农村的年轻女性在低强度,高体积的抵抗训练 (LIHV-RT) 中表现优越,特别是在膝盖曲和伸展练习中. 这些发现突出了农村和城市女学生之间的力量培训适应的关键差异.
科学领域:
- 运动生理学 运动生理学
- 运动科学 运动科学 运动科学
- 生物机械分析 生物机械分析
背景情况:
- 低强度,高体积的抵抗训练 (LIHV-RT) 是一种常见的训练方式.
- 了解不同人群之间的LIHV-RT的性能差异对于计划设计至关重要.
- 之前的研究并没有广泛比较农村和城市年轻女学生之间的LIHV-RT结果.
研究的目的:
- 识别和解释农村和城市年轻女学生之间主要肌肉群的LIHV-RT的表现差异.
- 为这些群体建立相关的定量和质量抵抗训练参数.
- 为设计量身定制的抵抗训练计划提供信息.
主要方法:
- 从布拉索夫的特兰西瓦尼亚大学招募了46名娱乐活跃的女学生 (平均年龄20±1岁),分类为城市或农村.
- 使用修改后的阻力运动机器,配有动力计和传感器,用于测量膝盖曲和伸展期间的力和加速.
- 在两个负载上进行了368次测试,分析了重复到故障,设置持续时间,力,加速和重复质量.
主要成果:
- 与城市学生相比,农村的女学生在膝盖曲和延伸练习中失败的重复次数明显高.
- 对于农村学生来说,膝盖曲和延伸的设置持续时间明显更长.
- 两组之间观察到重复执行和冲动发展的定性差异.
结论:
- 农村和城市的年轻女学生之间的LIHV-RT表现存在显著差异,特别是膝盖曲和延伸练习.
- 这些发现使教育工作者能够优化抵抗训练计划设计,并适应不同学生人口统计的教学技术.
- 这项研究为不同人群中对LIHV-RT的生物机械和生理适应提供了宝贵的见解.
相关概念视频
Static Equilibrium - II
Static equilibrium is a special case in mechanics that is very important in everyday life. It occurs when the net force and the net torque on an object or system are both zero. This means that both the linear and angular accelerations are zero. Thus, the object is at rest, or its center of mass is moving at a constant velocity. However, this does not mean that no forces are acting on the object within the system. In fact, there are very few scenarios on Earth in which no forces are acting upon...
Strain and Elastic Modulus
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...
Equivalent Couples
In mechanical engineering, the concept of equivalent couples plays a crucial role in understanding and analyzing various mechanical systems.
Two couples are considered to be equivalent if they produce the same rotational effect on a rigid body. In other words, the two couples have the same magnitude and act in the same direction, causing the same angular displacement or acceleration in the body.
For instance, consider two couples lying in the plane of the page, with one having a pair of equal...
Two couples are considered to be equivalent if they produce the same rotational effect on a rigid body. In other words, the two couples have the same magnitude and act in the same direction, causing the same angular displacement or acceleration in the body.
For instance, consider two couples lying in the plane of the page, with one having a pair of equal...
Temperature Dependent Deformation
In a nonhomogeneous rod made up of steel and brass, restrained at both ends and subjected to a temperature change, several steps are involved in calculating the stress and compressive load. Due to the problem's static indeterminacy, one end support is disconnected, allowing the rod to experience the temperature change freely. Next, an unknown force is applied at the free end, triggering deformations in the rod's steel and brass portions. These deformations are then calculated and added together...
Measurements of Strain
Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain gauge...
Logarithmic Differentiation
When a car’s weight and driving forces act on a tire, they impose an external load on the rubber material. This load is resisted internally by forces distributed throughout the tire structure, which are defined as stress. The resulting deformation of the rubber due to this stress is quantified as strain. The relationship between stress and strain governs how the tire deforms under load and is central to understanding its mechanical response during operation.Rubber exhibits a nonlinear...


