干部摆动对固定座位划船的表现的贡献
Renee Lafreniere1, Matt Jensen2, Tomislav Smoljanovic3
1Department of Physical Therapy, University of British Columbia, Vancouver, BC, Canada.
Frontiers in sports and active living
|August 18, 2025
概括
帕拉划船分类得到了树干摆动研究的支持. PR1的划船员通过有限的杆摆动来提高性能,而不是PR2和不符合条件的划船员,他们受到阻碍.
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 横划艇的性能分析分析
背景情况:
- 干部摆动是将残疾人 (PR1,PR2) 分类为残疾人的一个关键因素.
- 了解干部摆动的贡献对于公平竞争和固定座位划船的性能优化至关重要.
研究的目的:
- 调查干部摆动限制对PR1,PR2和非合格 (NE) 副划船的划船性能的影响.
- 提供基于证据的见解,了解固定座位划船的生物力学及其与 پارا划船员分类的关系.
主要方法:
- 参与者 (PR1,PR2,NE划船员) 在受限制和不受限制的干部摆动条件下,在人体计上进行了最大500米的划船.
- 测量包括手柄力,行李箱延伸力和500米比赛时间.
- 用重复测量一般线性模型分析数据.
主要成果:
- PR1的划船员表现出更大的干部延伸力和更快的500米的时间,干部摆动受到限制.
- NE和PR2的手在受限制的杆摆动条件下表现下降 (500m次减速,较低的冲击冲动).
- 干部限制使PR1手受益,而阻碍NE和PR2手.
结论:
- 干部摆动限制对PR1滑轮员的表现产生了积极的影响,支持了他们的分类标准.
- 相反,干限制对PR2和NE划船员的性能产生了负面影响,突出了生物力学差异.
- 这些发现为当前的降落划船分类系统提供了基于证据的理由.
相关概念视频
Axial and Appendicular Muscles
1.7K
Skeletal muscles, the key players in our body's movement, can be classified into two groups based on their location and function: axial muscles and appendicular muscles. These classifications reflect the primary roles the muscles play in the body's structure and movement.
Axial Muscles
Axial muscles, situated along the body's midline, are intricately connected to the axial skeleton, which includes the skull, spine, ribs, and sternum. These muscles facilitate facial expressions and...
Axial Muscles
Axial muscles, situated along the body's midline, are intricately connected to the axial skeleton, which includes the skull, spine, ribs, and sternum. These muscles facilitate facial expressions and...
1.7K
The Swing Equation
653
The Swing Equation is a fundamental tool in power system dynamics, especially for analyzing the behavior of generating units like three-phase synchronous generators. This equation emerges from applying Newton's second law to the rotor of a generator, encompassing factors such as inertia, angular acceleration, and the interplay between mechanical and electrical torques.
In a steady-state operation, the mechanical torque (Τm) supplied to the generator is balanced by the electrical torque...
In a steady-state operation, the mechanical torque (Τm) supplied to the generator is balanced by the electrical torque...
653
Eccentric Loading
497
Eccentric loading is a crucial concept in the study of structural engineering and mechanics, particularly when analyzing the stability and stress distribution in columns. Unlike centric loading, where the force is applied along the centroidal axis, causing uniform compression, eccentric loading occurs when a force is applied off-center. This off-center application introduces not only direct compressive stress but also bending stress, significantly influencing the column's behavior under...
497
Applications of Stress
400
Consider a structure made of a boom and a rod designed to support a load. These two components are connected by a pin and stabilized by brackets and pins. The boom and the rod are detached from their supports to assess the different stresses imposed on this structure, and a free-body diagram is drawn. Then, all the forces applied, including the load acting on the structure, are identified. The reaction forces exerted on both the boom and the rod are computed using the equilibrium equations.
The...
The...
400
Simple Trusses
2.0K
A truss is a structural framework consisting of slender members connected at joints, designed to support external loads while minimizing material usage and weight. Simple trusses are a type of planar truss where all members lie within a single two-dimensional plane.
The most basic planar truss is a simple truss with three members arranged in a triangular formation. This triangular truss is inherently stable and rigid due to its geometry, making it an ideal starting point for creating more...
The most basic planar truss is a simple truss with three members arranged in a triangular formation. This triangular truss is inherently stable and rigid due to its geometry, making it an ideal starting point for creating more...
2.0K
Space Trusses
891
A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. The space truss is widely used in various construction projects due to its adaptability and capacity to withstand complex loads.
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
891


