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在年轻和老年男性中,在中度缓慢的抵抗训练后,阿基里斯和骨肌的结构和功能

Adrien J Létocart¹, René B Svensson^2,3,4, Franck Mabesoone⁵

¹UMR CNRS 7338 Biomécanique et Bioingénierie, Sorbonne Universités, Université de Technologie de Compiègne, 60205, Compiègne Cedex, France. adrien.letocart@yahoo.fr.

European journal of applied physiology

|April 22, 2024

概括

年长的男性肌机械性能较弱,但12周的适度抵抗训练可以在年轻人和老年人中同样改善肌大小和机械. 这种培训无论年龄如何都有效.

科学领域:

运动生理学运动生理学
老年学是一门学科.
生物医学工程生物医学工程

背景情况:

衰老与肌机械性质的下降有关.
众所周知,阻力训练可以提高肌肉力量,但它对不同年龄组肌特性的影响需要进一步研究.
了解肌结构和功能的年龄相关差异对于开发有效的运动干预措施至关重要.

研究的目的:

研究衰老和中等负荷耐力训练对骨 (PT) 和阿基里斯 (AT) 的尺寸和机械性质及其相关的肌瘤 (中部胃膜 (MG) 和横向巨 (VL)) 的影响.
为了比较年轻和老年男性之间的这些影响.
为了确定12周的中度缓慢抵抗训练是否可以在两个年龄组中诱导肌性质的类似适应.

主要方法:

招募年轻人 (24.8岁) 和老年人 (70.0岁) 的男性.
一个为期12周的中等缓慢的阻力训练计划 (55%的最大一次重复) 用于下肢肌肉,每周3次.
使用磁共振成像 (MRI) 评估肌尺寸 (截面面积 (CSA)) 和使用超声波和力量测量训练前后测量机械性质 (刚度,Young的模量).

主要成果:

与基线年轻男性相比,老年男性的阿基勒斯肌 (AT) CSA较大,但没有状肌 (PT) CSA.
基线机械性质在老年男性中通常较低,用于AT,MG神经症和VL神经症,但不是PT.
经过12周的训练后,两组都显示了AT和PT CSA的同等增加,以及VL神经症和AT的硬度和Young的模块的同等改善.

结论:

除骨肌外,老年男性与年轻男性相比,肌的机械性质降低.
一个12周的适度缓慢的抵抗训练计划足以提高肌大小和机械特性,无论是年轻人还是老年人.
短期中等缓慢的抵抗训练在不同年龄组的肌大小和力学方面取得了可比的改善.

关键词:

阿基里斯肌衰老的衰老衰老的衰老脊髓神经复发症 (aponeurosis) 是一种神经复发症.机械性质机械性质适度的负载适度的负载骨肌的肌是如何形成的阻力训练阻力训练阻力训练

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