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Effects of whole-body vibration training on muscle strength and flexibility: significance of the vibration frequency.

机译：全身振动训练对肌肉力量和柔韧性的影响：振动频率的意义。

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摘要

Three separate studies were carried out to test the acute, acute residual and chronic effect of whole body mechanical vibration (WBV). In the first and second study eight week WBV was used either with individually selected vibration frequency that ranged from 20 to 35Hz frequency or 30 Hz frequency for each subject. In the third study 20 Hz frequency was applied during four weeks for acute stroke patients. In the first study dynamic force was estimated by using squat jumps, countermovement jumps or 10 s rebound jumps. In the second study the flexibility of the hamstring and lower back muscle were tested during vibration, after having finished the vibration exposure, and before and after eight week vibration intervention. In addition the reactive muscle strength of the extensors in lower limbs were determined before and after eight week vibration intervention. In the third study maximum isometric force and force development, maximum eccentric force and mechanical work were determined for the affected and non-affected knee extensors.;The results of the present investigation may allow us to conclude the followings: (1) The individually selected vibration frequency based on the EMG response for WBV intervention results in greater improvement in explosive and reactive strength as compared with fixed frequencies vibration intervention; (2) The improvements in vertical jumps are greatest when movement or strength exertion is carried out with short angular displacement and when the muscle stretch is fast that occurs in rebound jumps; (3) Individualized whole-body vibration without superimposing other exercises is an effective method of acutely increasing lower back and hamstring flexibility (acute and residual effect); (4) Individualized whole-body vibration does not induce a chronic effect on hamstring flexibility; (5) The results indicates indirectly that effect of vibration frequency depends upon the physical and the neuromuscular condition of the treated muscles based on the study in patients with stroke.
机译：进行了三个单独的研究，以测试全身机械振动（WBV）的急性，急性残留和慢性作用。在第一项和第二项研究中，使用了八周的WBV，或者对每个对象分别选择了20至35Hz的频率或30 Hz的振动频率。在第三项研究中，急性卒中患者在四个星期内使用了20 Hz频率。在第一个研究中，通过深蹲跳跃，反向运动跳跃或10 s反弹跳跃来估算动力。在第二项研究中，在振动过程中，完成振动暴露之后以及在八周振动干预之前和之后，测试了ham绳肌和下背部肌肉的柔韧性。另外，在八周振动干预之前和之后确定下肢伸肌的反应性肌肉强度。在第三项研究中，确定了受影响的和未受影响的膝盖伸肌的最大等距力和力发展，最大偏心力和机械功。；本研究的结果可能使我们得出以下结论：（1）个体选择与固定频率的振动干预相比，基于EMV响应的WBV干预的振动频率可大大提高炸药和反应强度。 （2）当以短角度位移进行运动或施加力量时，以及回弹跳中发生的肌肉快速伸展时，垂直跳的改善最大。 （3）个性化的全身振动而不叠加其他运动是有效增加下背部和of绳肌柔韧性（急性和残余作用）的有效方法； （4）个性化的全身振动不会对绳肌的柔韧性产生慢性影响； （5）研究结果间接表明，振动频率的影响取决于对中风患者的研究所治疗​​的肌肉的物理和神经肌肉状况。

著录项

  • 作者

    Di Giminiani, Riccardo.;

  • 作者单位

    Semmelweis Egyetem (Hungary).;

  • 授予单位 Semmelweis Egyetem (Hungary).;
  • 学科 Kinesiology.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 91 p.
  • 总页数 91
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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