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相关概念视频

Muscles that Move the Leg01:23

Muscles that Move the Leg

The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed to...

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Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
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在北欧腿筋运动训练和脱训后,腿筋肌肉结构和微观结构发生变化.

Anoosha Pai S1, Max H Andrews2, Reed D Gurchiek3

  • 1Department of Bioengineering, Stanford University, Stanford, CA 94305, USA.

Journal of sport and health science
|June 27, 2025
PubMed
概括

北欧腿筋运动 (NHE) 增加腿筋肌肉体积和纤维长度,在半肌和双腿骨短头方面获得更大的收益. 持续的培训对于维持这些保护性适应至关重要.

关键词:
扩散张力成像的成像方法练习适应 练习适应腿筋 腿筋 腿筋 腿筋北欧运动腿筋运动

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科学领域:

  • 运动医学 运动医学
  • 运动生理学 运动生理学
  • 肌肉生理学 肌肉生理学

背景情况:

  • 已知北欧腿筋运动 (NHE) 可以减少腿筋应变.
  • 四个腿筋肌肉对NHE的肌肉特异性适应性尚不清楚.
  • 在这项研究中,研究了继NHE之后的双腿骨短头 (BFsh),双腿骨长头 (BFlh),半 (ST) 和半膜 (SM) 的结构和微观结构变化.

研究的目的:

  • 研究四个腿筋肌肉对NHE训练的肌肉特异性建筑和微观结构的适应.
  • 为了确定9周的NHE干预对腿筋肌肉体积,纤维通道长度和微观结构参数的影响.
  • 为了评估这些适应的可逆性,经过3周的训练期.

主要方法:

  • 11名参与者接受了9周的监督NHE培训,随后进行了3周的脱训.
  • 磁共振成像 (MRI) 用于测量腿筋的结构性 (体积,纤维通道长度,纤维通道角度) 和微结构性 (扩散参数:AD,MD,RD,FA) 属性.
  • 在训练前,训练后和脱训阶段进行了测量.

主要成果:

  • NHE诱导显著的,非均的肌肉缩 (ST:26%,BFsh:22%,BFlh:9%,SM:6%) 和所有腿筋纤维通道长度增加.
  • 观察到轴向 (AD),平均 (MD) 和辐射 (RD) 扩散率显著增加,表明微观结构变化.
  • 阻断导致ST体积减少,纤维通道长度恢复到基线,而扩散参数仍然较高.

结论:

  • NHE训练显著增加腿筋肌肉体积和纤维通道长度,在肌肉之间产生差异性影响 (ST和BFsh显示最大的缩).
  • 微观结构的变化,以增加的RD表示,伴随着缩.
  • 阻碍导致部分适应性丧失,突出显示需要持续培训以保持保护性益处.