慢性踝关节不稳患者短潜伏期和中潜伏期反应期间的拮抗肌共同激活
Antagonist co-activation during short and medium latency responses in subjects with chronic ankle instability.
作者信息
Sousa Andreia S P
机构信息
Área Científica de Fisioterapia, Escola Superior de Saúde do Porto, Instituto Politécnico do Porto, Centro de Investigação em Reabilitação - Centro de Estudos de Movimento e Atividade Humana, Rua Dr. António Bernardino de Almeida, 400, 4200-072 Porto, Portugal.
出版信息
J Electromyogr Kinesiol. 2018 Dec;43:168-173. doi: 10.1016/j.jelekin.2018.10.006. Epub 2018 Oct 15.
PURPOSE
This study aims to evaluate bilateral ankle antagonist co-activation during compensatory postural responses, including short latency responses (SLR) and medium latency responses (MLR), in response to a unilateral sudden ankle inversion in subjects with chronic ankle instability (CAI).
METHODS
Twenty-four participants with CAI and 20 controls participated in the present study. Bilateral eletromyography of peroneus longus (PL), peroneus brevis (PB), tibialis anterior (TA) and soleus (SOL) muscles was collected during a unilateral sudden inversion perturbation (30°) to assess antagonist co-activation of SOL/TA and TA/P pairs during SLR and MLR in both support and perturbed positions.
RESULTS
Compared to control group, participants with CAI presented: (1) bilateral increased antagonist co-activation of SOL/TA MLR in the support position; and (2) decreased antagonist co-activation of TA/P MLR of uninjured limb in the support position and of injured limb in the perturbed position.
CONCLUSIONS
CAI involves deregulation of ankle antagonist co-activation of MLR in both injured and uninjured limbs.
目的
本研究旨在评估慢性踝关节不稳（CAI）患者在代偿性姿势反应过程中的双侧踝关节拮抗肌共同激活情况，包括对单侧突然踝关节内翻的短潜伏期反应（SLR）和中潜伏期反应（MLR）。
方法
24名CAI患者和20名对照组参与者参与了本研究。在单侧突然内翻扰动（30°）过程中，收集双侧腓骨长肌（PL）、腓骨短肌（PB）、胫骨前肌（TA）和比目鱼肌（SOL）的肌电图，以评估在支撑位和受扰动位的SLR和MLR期间，SOL/TA和TA/P对的拮抗肌共同激活情况。
结果
与对照组相比，CAI患者表现为：（1）支撑位时双侧SOL/TA MLR的拮抗肌共同激活增加；（2）支撑位时未受伤肢体以及受扰动位时受伤肢体的TA/P MLR的拮抗肌共同激活减少。
结论
CAI涉及受伤和未受伤肢体中MLR的踝关节拮抗肌共同激活失调。
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