相关实验视频
Updated: Jul 9, 2026
07:51
Video Movement Analysis Using Smartphones ViMAS: A Pilot Study
Published on: March 14, 2017
17.2K
评估在线视频平台的动态平衡练习:关注YouTube
Ali Zorlular1, Rabia Zorlular1
1Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences, Niğde Ömer Halisdemir University, Niğde, Turkiye.
The Physician and sportsmedicine
|November 27, 2025
概括
大多数YouTube动态平衡练习视频都是有用的,但有些视频含有不准确的内容. 医疗保健提供者的内容更可靠. 检查创作者凭证以获得更优质的动态平衡培训信息.
科学领域:
- 运动医学 运动医学
- 数字健康数字健康
- 运动科学 运动科学
背景情况:
- YouTube是健康和运动信息的流行的来源.
- 动态平衡练习对于预防伤害和提高表现至关重要.
- 评估在线练习内容的质量和可靠性至关重要.
研究的目的:
- 评估动态平衡运动训练的YouTube视频的内容,可靠性和质量.
- 为了比较来自不同来源的视频的质量和可靠性.
- 为了确定常见的视频指标是否与内容准确性相关.
主要方法:
- 在YouTube上搜索"动态平衡练习",并分析了91个视频.
- 使用修改后的DISCERN (mDISCERN) 工具评估信息的可靠性.
- 使用全球质量表 (GQS) 和JAMA基准标准评估视频质量.
- 两个独立的物理治疗师审查了视频,第三个解决了差异.
主要成果:
- 69%的视频是有用的;24%包含不准确的信息.
- 来自医疗保健提供者的视频显示出明显更高的质量和可靠性 (p<0.001).
- 质量/可靠性得分和视频功率指数 (VPI) 之间没有发现显著的关联.
结论:
- 虽然大多数动态平衡练习视频是有帮助的,但用户应该小心不准确的内容.
- 像VPI这样的视频指标不能可靠地表明内容的准确性.
- 优先考虑具有经过验证凭证的创作者的视频,可以确保获得更高质量的,可靠的动态平衡培训资源.
相关概念视频
02:20Dynamic Equilibrium
A reversible chemical reaction represents a chemical process that proceeds in both forward (left to right) and reverse (right to left) directions. When the rates of the forward and reverse reactions are equal, the concentrations of the reactant and product species remain constant over time and the system is at equilibrium. A special double arrow is used to emphasize the reversible nature of the reaction. The relative concentrations of reactants and products in equilibrium systems vary greatly;...
01:05Static Equilibrium - I
A rigid body is said to be in dynamic equilibrium when both its linear and angular acceleration are zero, relative to an inertial frame of reference. This means that a body in equilibrium can be moving, but only when its linear and angular velocities are constant. A rigid body is said to be in static equilibrium when it is at rest in the selected frame of reference. The distinction between static equilibrium (e.g., a state of rest) and dynamic equilibrium (e.g, a state of uniform motion) is...
01:07Static 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...
01:21Rigid Body Equilibrium Problems - II
A rigid body is in static equilibrium when the net force and the net torque acting on the system are equal to zero.
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
Consider two children sitting on a seesaw, which has negligible mass. The first child has a mass (m1) of 26 kg and sits at point A, which is 1.6 meters (r1) from the pivot point B; the second child has a mass (m2) of 32 kg and sits at point C. How far from the pivot point B should the second child sit (r2) to balance the seesaw?
01:20Virtual Work
The principle of virtual work states that if a body is in static and dynamic equilibrium, then the sum of all the virtual work done by all external forces and couple moments for any given virtual displacement must be zero.
In static equilibrium, a body can experience an imaginary or virtual movement, such as displacement or rotation. The virtual work done by a force is equal to the dot product of force and virtual displacement in the direction of the force. When it comes to virtually rotating a...
In static equilibrium, a body can experience an imaginary or virtual movement, such as displacement or rotation. The virtual work done by a force is equal to the dot product of force and virtual displacement in the direction of the force. When it comes to virtually rotating a...
01:15Equilibrium and Balance
The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...