常见测试地板表面对力板数据的影响:对标准化的影响
1Directorate of Psychology and Sport, University of Salford, Salford, United Kingdom.
PloS one
|July 3, 2025
概括
力量板下面的表面显著影响运动员的性能指标,如峰值力和力量发展速度 (RFD). 标准化地板对于准确和一致的力板测试结果至关重要.
科学领域:
- 生物力学 生物力学
- 运动科学 运动科学 运动科学
- 绩效分析 绩效分析
背景情况:
- 强力板测试是评估运动员表现的标准方法.
- 关于底层表面如何影响力板数据的研究有限.
- 测试表面的变化可能会导致性能评估中的不一致性.
研究的目的:
- 为了研究力板下不同表面对关键性能变量的影响.
- 确定地板类型是否影响力减小,峰值力,力发展速度 (RFD) 和接触时间.
- 为标准化力板测试环境提供证据.
主要方法:
- 机械测试装置用于控制和可重复的冲击,避免人类的变化.
- 测试了七种常见的表面 (乙烯基,,奥林匹克平台,两种地毯类型,Mondo轨道,弹地板).
- 对于每个表面,测量了包括力减小,峰值力,RFD和接触时间在内的衍生变量.
主要成果:
- 在不同地板条件下观察到所有测量变量的显著差异 (p < 0.05).
- 影响大小从大到极大,表明表面的实质性影响.
- 弹地板产生了最高的减力和最低的峰值力,而CarpetF显示了最低的RFD和最长的接触时间.
结论:
- 压力板下面的地板表面显然会影响衍生性能指标.
- 实践者必须考虑测试地点的地板,以确保可靠和有效的结果.
- 建议对地板表面进行标准化,以便在体育科学和性能分析中收集一致和准确的力板数据.
相关概念视频
Frictional Force
8.4K
When a body is in motion, it encounters resistance because the body interacts with its surroundings. This resistance is known as friction, a common yet complex force whose behavior is still not completely understood. Friction opposes relative motion between systems in contact, but also allows us to move. Friction arises in part due to the roughness of surfaces in contact. For one object to move along a surface, it must rise to where the peaks of the surface can skip along the bottom of the...
8.4K
Static Friction
902
Static friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. It plays a crucial role in our daily lives, from walking on the ground to driving a car.
For example, consider a scenario where a truck is connected to a car by a rope, ready to tow it along a road. When no external force is applied by the truck, the car remains stationary and is said to be in static equilibrium. In this case, the forces acting on the car, such as gravity and the...
For example, consider a scenario where a truck is connected to a car by a rope, ready to tow it along a road. When no external force is applied by the truck, the car remains stationary and is said to be in static equilibrium. In this case, the forces acting on the car, such as gravity and the...
902
Force Classification
1.6K
Forces play a crucial role in the study of physics and engineering. They are essential in describing the motion, behavior, and equilibrium of objects in the physical world. Forces can be classified based on their origin, type, and direction of action.
Contact and non-contact forces are two of the most widely used categories of forces. As the name suggests, contact forces require physical contact between two objects to act upon each other. Examples of contact forces include frictional,...
Contact and non-contact forces are two of the most widely used categories of forces. As the name suggests, contact forces require physical contact between two objects to act upon each other. Examples of contact forces include frictional,...
1.6K
Static and Kinetic Frictional Force
16.2K
One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...
However, if two systems are in contact and are stationary relative to one...
16.2K
Dry Friction
469
Dry friction occurs between two solid surfaces in contact as they attempt to move relative to one another. In daily life, dry friction is encountered in various forms, such as when walking on the ground, sliding an object across a table, or rubbing hands together. Despite its ubiquity, the underlying mechanisms behind dry friction are not readily visible.
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
To illustrate this concept, imagine a wooden crate resting on a rough, non-uniform horizontal surface. When an external force is applied to...
469


