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首页> 外文期刊>International journal of osteopathic medicine: IJOM >The effect of thoracic spine high-velocity low-amplitude thrust manipulation on myoelectric activity of the lower trapezius and posterior deltoid muscles during treadmill walking
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The effect of thoracic spine high-velocity low-amplitude thrust manipulation on myoelectric activity of the lower trapezius and posterior deltoid muscles during treadmill walking

机译：跑步过程中胸椎高速低幅推力操作对下斜方肌和后三角肌的肌电活动的影响

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Objectives: To investigate the effect of thoracic spine thrust manipulation on the EMG activity of posterior deltoid and lower trapezius during treadmill walking. Methods: Volunteers (n = 40; 19 males and 21 females) were randomly assigned to a 'sham ultrasound' control group (n = 20) or a thoracic spine high-velocity thrust (HVLAT) manipulation group (n = 20). Surface EMG recordings were collected from the right posterior deltoid and lower trapezius muscles whilst participants walked on a treadmill for 2 min, at 2.8 mph, both prior to and immediately post-intervention. EMG recordings were analysed by evaluating the difference of integral values for pre and post data using repeated measures ANOVA.Results: Both control (sham ultrasound) and experimental groups (HVLAT) exhibited small non-significant reductions in post-intervention EMG activity of lower trapezius (p = 0.201) and a significant reduction in posterior deltoid (p = 0.003) during treadmill walking. No significant difference was found in the integrated EMG (IEMG) power between control and experimental group in either the 'before' or 'after' measurements for both target muscles.Conclusions: Manipulation of the thoracic spine does not significantly alter the myoelectric activity of lower trapezius and posterior deltoid muscles during treadmill walkins.
机译：目的：研究胸椎推力操纵对跑步机行走过程中后三角肌和下斜方肌肌电活动的影响。方法：将志愿者（n = 40;男性19和女性21）随机分配到“假超声”对照组（n = 20）或胸椎高速推力（HVLAT）操纵组（n = 20）。在干预之前和之后立即从右后三角肌和斜方肌下部肌收集表面EMG记录，而参与者以2.8 mph的速度在跑步机上行走2分钟。通过使用重复测量方差分析评估前后数据的积分值差异来分析EMG记录。结果：对照组（假超声）和实验组（HVLAT）在较低斜方肌的干预后EMG活性均表现出较小的无显着降低（p = 0.201）和跑步机行走过程中后三角肌的明显减少（p = 0.003）。对照组和实验组在两个目标肌肉的“之前”或“之后”测量中，在综合肌电图（IEMG）功率方面均没有发现显着差异。结论：操纵胸椎不会显着改变下肢的肌电活动跑步机走动时斜方肌和后三角肌。

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