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Differential leveling is a precise method in surveying used to determine the elevation difference between two points. Its primary goal is to establish accurate vertical measurements to create level surfaces or grade lines critical for designing and constructing infrastructures such as roads, bridges, and buildings.The procedure for differential leveling begins with setting up and leveling the instrument at a point where the benchmark can be seen. The level rod is held on the benchmark (BM), and...
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Profile leveling and cross-sections are surveying methods used to determine and document terrain elevations for infrastructure projects such as highways, railroads, canals, and pipelines. These methods provide data for earthwork planning and alignment of proposed routes.  Profile leveling involves measuring elevations along a fixed line to create a vertical terrain profile. A surveyor sets up a leveling instrument at the benchmark (BM) and records a backsight (BS) to determine the...
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身体和性能配置文件区分U-18篮球运动员的竞争水平.

Anna Goniotaki1, Dimitrios I Bourdas2, Antonios K Travlos3

  • 1School of Physical Education and Sports Science, National and Kapodistrian University of Athens, 41 Ethnikis Antistasis, 17237 Athens, Greece.

Sports (Basel, Switzerland)
|January 27, 2026
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概括

高级U-18男子篮球运动员与较低级别球员相比,表现出卓越的身体和技术技能. 这些因素对于在青少年篮球中识别人才和发展球员至关重要.

关键词:
青少年年轻年轻的年轻人有氧无氧有氧人类测量法 人类测量法身体健康 身体健康 身体健康生理技术参数 物理技术参数进行分析和监测.技能发展 技能发展人才识别 人才识别 人才识别

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科学领域:

  • 运动科学 运动科学 运动科学
  • 人才识别 人才识别
  • 青少年篮球表现 青少年篮球表现

背景情况:

  • 关于区分U-18篮球水平的物理和技术因素的证据有限.
  • 这些决定因素对于人才识别和球员发展至关重要.

研究的目的:

  • 检查高水平 (HL) 和低水平 (LL) U-18男性篮球运动员在人体测量,身体表现和技术技能方面的差异.
  • 探索所有参与者的技术技能和身体属性之间的关系.

主要方法:

  • 评估U-18男子篮球运动员的人类测量,身体表现和技术技能.
  • 使用统计分析来评估组间的差异和相关性 (p ≤0.05).

主要成果:

  • 与LL球员相比,HL球员表现出明显更好的身体属性 (身高,臂距,下体脂肪) 和性能指标 (速度,灵活性,跳跃高度,耐力).
  • HL球员在滴球和防守滑动任务中表现出卓越的技术能力.
  • 人类测量/绩效变量和技术技能之间发现了强烈的相关性,区分了竞争水平.

结论:

  • 身体,技术和表现因素在高级青年篮球中相互联系.
  • 教练可以利用这些见解进行有针对性的培训,人才识别和球员发展策略.