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Updated: Jul 24, 2026

Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
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使用生物机械效率概念预测青少年棒球投手疼痛的存在

Adam R Nebel1, Kevin A Giordano2, Nicole M Bordelon1

  • 1Sports Medicine and Movement Laboratory, School of Kinesiology, Auburn University, Auburn, Alabama, USA.

Orthopaedic journal of sports medicine
|October 18, 2024
PubMed
概括

青少年投手肩部分心力较高增加了他们投手臂疼痛的风险. 练习高效的运动可以减少疼痛,同时保持性能.

关键词:
肘部扭矩 肘部扭矩伤害预防伤害预防投球速度 投球速度肩部分散注意力的情况.

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Mechanical Efficiency of Real Machines01:14

Mechanical Efficiency of Real Machines

The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...