Andersen Lars L, Kjaer Michael, Andersen Christoffer H, Hansen Peter B, Zebis Mette K, Hansen Klaus, Sjøgaard Gisela
Lersø Parkalle 105, DK 2100 Copenhagen, Denmark.
Phys Ther. 2008 Jun;88(6):703-11. doi: 10.2522/ptj.20070304. Epub 2008 Mar 13.
Muscle-specific strength training has previously been shown to be effective in the rehabilitation of chronic neck muscle pain in women. The aim of this study was to determine the level of activation of the neck and shoulder muscles using surface electromyography (EMG) during selected strengthening exercises in women undergoing rehabilitation for chronic neck muscle pain (defined as a clinical diagnosis of trapezius myalgia).
The subjects were 12 female workers (age=30-60 years) with a clinical diagnosis of trapezius myalgia and a mean baseline pain intensity of 5.6 (range=3-8) on a scale of 0 to 9.
Electromyographic activity in the trapezius and deltoid muscles was measured during the exercises (lateral raises, upright rows, shrugs, one-arm rows, and reverse flys) and normalized to EMG activity recorded during a maximal voluntary static contraction (MVC).
For most exercises, the level of muscle activation was relatively high (>60% of MVC), highlighting the effectiveness and specificity of the respective exercises. For the trapezius muscle, the highest level of muscle activation was found during the shrug (102+/-11% of MVC), lateral raise (97+/-6% of MVC), and upright row (85+/-5% of MVC) exercises, but the latter 2 exercises required smaller training loads (3-10 kg) compared with the shrug exercise (20-30 kg).
The lateral raise and upright row may be suitable alternatives to shrugs during rehabilitation of chronic neck muscle pain. Several of the strength exercises had high activation of neck and shoulder muscles in women with chronic neck pain. These exercises can be used equally in the attempt to achieve a beneficial treatment effect on chronic neck muscle pain.
先前研究表明，针对特定肌肉的力量训练对女性慢性颈部肌肉疼痛的康复有效。本研究旨在通过表面肌电图（EMG）测定慢性颈部肌肉疼痛（定义为斜方肌肌痛临床诊断）女性患者在进行特定强化训练时颈部和肩部肌肉的激活水平。
12名女性工作者（年龄30 - 60岁），临床诊断为斜方肌肌痛，平均基线疼痛强度在0至9分的量表上为5.6（范围3 - 8）。
在训练（侧平举、直立划船、耸肩、单臂划船和反向飞鸟）过程中测量斜方肌和三角肌的肌电活动，并将其归一化为最大自主静态收缩（MVC）期间记录的肌电活动。
对于大多数训练，肌肉激活水平相对较高（>MVC的60%），突出了各训练的有效性和特异性。对于斜方肌，在耸肩（MVC的102±11%）、侧平举（MVC的97±6%）和直立划船（MVC的85±5%）训练中发现肌肉激活水平最高，但与耸肩训练（20 - 30千克）相比，后两项训练所需训练负荷较小（3 - 10千克）。
在慢性颈部肌肉疼痛康复过程中，侧平举和直立划船可能是耸肩的合适替代训练。几项力量训练在慢性颈部疼痛女性中对颈部和肩部肌肉有较高激活。这些训练可同样用于尝试对慢性颈部肌肉疼痛取得有益的治疗效果。
