相关实验视频
Updated: Aug 2, 2026

09:29
Skeletal Muscle Gender Dimorphism from Proteomics
Published on: December 14, 2011
12.9K
成年男性和女性之间三肌肌动力学和肌电学上的差异
1Department of Physical Therapy, College of Applied Medical Sciences, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
Medicine
|September 9, 2025
概括
男性表现出比女性更大的三肌肌肉力量 (扭矩,功率,工作),可能会增加阿基里斯受伤的风险. 肌肉激活模式在两性之间是相似的.
科学领域:
- 生物力学 生物力学
- 人体生理学 人体生理学
- 运动医学 运动医学
背景情况:
- 三肌 surae 肌群对于运动和冲击吸收至关重要.
- 阿基里斯肌损伤在男性中更为普遍,但肌肉力量产生的性别相关差异没有得到很好的量化.
- 了解这些差异对于预防伤害和优化性能至关重要.
研究的目的:
- 调查和量化三肌 surae 异动力学参数和肌肉激活的性别相关差异.
- 为了比较男性和女性在脚部曲过程中的异动力扭矩,功率和工作.
- 为了评估三肌肌肉激活幅度,跨性别的三肌肉 surae.
主要方法:
- 一个重复测量比较设计,涉及20名男性和20名女性.
- 使用异动力学动力计和电肌图学来测量异动力学扭矩,功率,工作和肌肉振幅.
- 在两个膝盖角度 (伸展和曲) 进行动态脚部曲测试,以准胃角肌和肌底肌.
主要成果:
- 与雌性相比,雄性产生的异动力扭矩,功率和工作显著增加 (P < .05).
- 男人表现出更高的正常化峰值扭矩,并在延伸 (49-80%) 和屈曲 (47-108%) 的膝盖位置工作.
- 对所有参与者来说,膝盖伸展与曲时,异动力输出更高;肌肉激活在两性之间是均的.
结论:
- 与女性相比,男性表现出优越的三肌 surae 异动力学性能.
- 在男性中,更大的力输出可能会增加他们患阿基里斯肌损伤的风险.
- 这些发现对运动表现,伤害康复和职业安全评估有影响.
相关概念视频
Types of Forces
In most situations, forces can be grouped into two categories: contact forces and field forces. Contact forces occur as a result of direct physical contact between objects. Field forces, however, act without the necessity of physical contact between objects. They depend on the presence of a "field" in the region of space surrounding the body under consideration. You can think of a field as a property of space that is detectable by the forces it exerts. Scientists think there are only four...
Electric Charges
From lightning during thunderstorms to electronic devices, the phenomenon of electromagnetism is all around us. The electromagnetic force is one of the four fundamental forces of nature. It has been known to humanity in various forms for thousands of years. For example, the ancient Greek philosopher Thales of Miletus recorded his experiments on static electricity using amber and fur in the sixth century BC.
The English physicist William Gilbert studied the phenomenon of static electricity in...
The English physicist William Gilbert studied the phenomenon of static electricity in...
Comparison Between Electrical And Gravitational Forces
There are four fundamental forces in nature: the gravitational force, the electromagnetic force, the strong nuclear force, and the weak nuclear force. To compare the numerical strengths of the first two, take two particles of the same kind. Since electrons are fundamental particles, they are a good example.
Since both are inverse square law forces, the distance gets canceled when the ratio of the two forces is considered. Instead, the ratio of the electrical and gravitational forces depends on...
Since both are inverse square law forces, the distance gets canceled when the ratio of the two forces is considered. Instead, the ratio of the electrical and gravitational forces depends on...
Characteristics of Dry Friction
Dry friction occurs when two solid surfaces slide against each other without any lubrication or fluid present. It causes resistance when pushing objects along a surface, like a gardener pushing a wheelbarrow. The force applied to move the cart causes dry friction between the wheel and the ground.
Before the wheelbarrow starts moving, the static frictional force acts tangentially to the contact surface, opposing the force that is about to induce the motion. This frictional force prevents the...
Before the wheelbarrow starts moving, the static frictional force acts tangentially to the contact surface, opposing the force that is about to induce the motion. This frictional force prevents the...
Overview of Muscle Tissues
The human body has three types of muscle tissue: skeletal, smooth, and cardiac. Each class has unique properties that enable them to perform specific functions. However, all muscle tissues share certain properties, including elasticity, contractility, and excitability.
Elasticity
Elasticity is the ability of muscles to stretch and return to their original shape. This property is partly due to elastic fibers — macromolecules that run through the muscles. These fibers are firm and resilient,...
Elasticity
Elasticity is the ability of muscles to stretch and return to their original shape. This property is partly due to elastic fibers — macromolecules that run through the muscles. These fibers are firm and resilient,...
Natural Selection and Mating Preferences
The principle of natural selection posits that organisms better adapted to their environment are more likely to survive and reproduce. This principle is closely intertwined with mating preferences, a key aspect of sexual selection, which evolutionary psychologists believe is driven by instincts to propagate one's genes. Such instincts significantly influence mating behaviors and preferences between genders.
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...
Females, due to their biological roles in conception, pregnancy, and nursing, inherently...

