与慢性踝关节不稳相关的比目鱼和腓骨长肌中霍夫曼反射的姿势调节改变

IF 2 4区 医学 Q3 NEUROSCIENCES
Kyung-Min Kim , Christopher D. Ingersoll , Jay Hertel
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引用次数: 50

摘要

我们的目的是评估有或没有慢性踝关节不稳定(CAI)的受试者在三种体位(俯卧、双足和单足)下比目鱼和腓骨长肌的Hoffmann (H)反射调节。16例单侧CAI患者和15例健康对照。当受试者俯卧,然后以安静的双足和单足站立时,记录双侧比目鱼和长腓骨的最大h反射和运动(M)波。最大h反射归一化为最大M波,得到三个位置的Hmax:Mmax比值。每个肌肉的h反射调节被量化为每对体位之间Hmax:Mmax比率的百分比变化得分:倾向于两足,两足到单足,倾向于单足。在所有三种调节中都发现了显著的肢体相互作用组(P <比目鱼肌0.05)。在CAI组中,受累肢体的比目鱼肌调节明显低于未受累肢体和对照组的双肢。对于腓骨长肌,两足到单足以及容易发生单足调节的结果相似。在要求较高的姿势中,感觉运动系统抑制h反射的能力受到限制,这可能是与CAI相关的姿势控制缺陷的潜在机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Altered postural modulation of Hoffmann reflex in the soleus and fibularis longus associated with chronic ankle instability

Our purpose was to assess Hoffmann (H) reflex modulations of the soleus and fibularis longus in three body positions (prone, bipedal and unipedal stances) in subjects with and without chronic ankle instability (CAI). Sixteen subjects with unilateral CAI and 15 healthy controls participated. Maximum H-reflexes and motor (M) waves were recorded bilaterally from the soleus and fibularis longus while subjects lied prone and then stood in quiet bipedal and unipedal stances. Maximum H-reflexes were normalized to maximum M waves to obtain Hmax:Mmax ratios for the three positions. H-reflex modulations, for each muscle, were quantified as the percent change scores in Hmax:Mmax ratios between each pair of positions: prone to bipedal, bipedal to unipedal, and prone to unipedal. There were significant group by limb interactions found for all three modulations (P < 0.05) for the soleus. In the CAI group, soleus modulations in involved limbs were significantly lower than in uninvolved limbs and both limbs in the controls. For the fibularis longus, similar results were found for the bipedal to unipedal and prone to unipedal modulations. Constrained ability of the sensorimotor system to down regulate H-reflex in more demanding postures may represent a potential mechanism of postural control deficits associated with CAI.

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来源期刊
CiteScore
4.70
自引率
8.00%
发文量
70
审稿时长
74 days
期刊介绍: Journal of Electromyography & Kinesiology is the primary source for outstanding original articles on the study of human movement from muscle contraction via its motor units and sensory system to integrated motion through mechanical and electrical detection techniques. As the official publication of the International Society of Electrophysiology and Kinesiology, the journal is dedicated to publishing the best work in all areas of electromyography and kinesiology, including: control of movement, muscle fatigue, muscle and nerve properties, joint biomechanics and electrical stimulation. Applications in rehabilitation, sports & exercise, motion analysis, ergonomics, alternative & complimentary medicine, measures of human performance and technical articles on electromyographic signal processing are welcome.
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