School of Health Sciences, University of Newcastle, Callaghan, Australia.
RECOVER Injury Research Centre, Menzies Health Institute Queensland, Griffith University Gold Coast Campus, Southport, Australia.
J Athl Train. 2018 Apr;53(4):395-403. doi: 10.4085/1062-6050-68-17. Epub 2018 Mar 23.
Scapular taping can offer clinical benefit to some patients with shoulder pain; however, the underlying mechanisms are unclear. Understanding these mechanisms may guide the development of treatment strategies for managing neuromusculoskeletal shoulder conditions.
To examine the mechanisms underpinning the benefits of scapular taping.
Descriptive laboratory study.
University laboratory.
A total of 15 individuals (8 men, 7 women; age = 31.0 ± 12.4 years, height = 170.9 ± 7.6 cm, mass = 73.8 ± 14.4 kg) with no history of shoulder pain.
INTERVENTION(S): Scapular taping.
MAIN OUTCOME MEASURE(S): Surface electromyography (EMG) was used to assess the (1) magnitude and onset of contraction of the upper trapezius (UT), lower trapezius (LT), and serratus anterior relative to the contraction of the middle deltoid during active shoulder flexion and abduction and (2) corticomotor excitability (amplitude of motor-evoked potentials from transcranial magnetic stimulation) of these muscles at rest and during isometric abduction. Active shoulder-flexion and shoulder-abduction range of motion were also evaluated. All outcomes were measured before taping, immediately after taping, 24 hours after taping with the original tape on, and 24 hours after taping with the tape removed.
Onset of contractions occurred earlier immediately after taping than before taping during abduction for the UT (34.18 ± 118.91 milliseconds and 93.95 ± 106.33 milliseconds, respectively, after middle deltoid contraction; P = .02) and during flexion for the LT (110.02 ± 109.83 milliseconds and 5.94 ± 92.35 milliseconds, respectively, before middle deltoid contraction; P = .06). These changes were not maintained 24 hours after taping. Mean motor-evoked potential onset of the middle deltoid was earlier at 24 hours after taping (tape on = 7.20 ± 4.33 milliseconds) than before taping (8.71 ± 5.24 milliseconds, P = .008). We observed no differences in peak root mean square EMG activity or corticomotor excitability of the scapular muscles among any time frames.
Scapular taping was associated with the earlier onset of UT and LT contractions during shoulder abduction and flexion, respectively. Altered corticomotor excitability did not underpin earlier EMG onsets of activity after taping in this sample. Our findings suggested that the optimal time to engage in rehabilitative exercises to facilitate onset of trapezius contractions during shoulder movements may be immediately after tape application.
肩胛带贴扎可为一些肩部疼痛患者带来临床益处；然而，其潜在机制尚不清楚。了解这些机制可能有助于指导管理神经肌肉骨骼肩部疾病的治疗策略的发展。
探讨肩胛带贴扎益处的潜在机制。
描述性实验室研究。
大学实验室。
共 15 名个体（8 名男性，7 名女性；年龄=31.0±12.4 岁，身高=170.9±7.6cm，体重=73.8±14.4kg），均无肩部疼痛史。
肩胛带贴扎。
表面肌电图（EMG）用于评估（1）在主动肩前屈和外展过程中，相对于三角肌中部收缩，斜方肌上部（UT）、下部（LT）和前锯肌的收缩幅度和起始时间，以及（2）这些肌肉在休息和等长外展时的皮质运动兴奋性（经颅磁刺激产生的运动诱发电位的幅度）。还评估了主动肩前屈和外展的活动范围。所有结果均在贴扎前、贴扎后即刻、贴扎后 24 小时原贴扎时和贴扎后 24 小时去除贴扎时进行测量。
与贴扎前相比，贴扎后即刻外展时 UT 的收缩起始时间更早（三角肌中部收缩后分别为 34.18±118.91ms 和 93.95±106.33ms，P=0.02），前屈时 LT 的收缩起始时间更早（三角肌中部收缩前分别为 110.02±109.83ms 和 5.94±92.35ms，P=0.06）。这些变化在贴扎后 24 小时未得到维持。贴扎后 24 小时，三角肌的平均运动诱发电位起始时间更早（贴扎时=7.20±4.33ms），而贴扎前为 8.71±5.24ms（P=0.008）。在任何时间框架内，我们均未观察到肩胛带肌肉的峰 RMS-EMG 活性或皮质运动兴奋性的差异。
肩胛带贴扎与肩外展和前屈时 UT 和 LT 收缩的起始时间更早相关。在本样本中，运动诱发电位起始时间的改变并没有为贴扎后 EMG 活动的早期起始提供依据。我们的发现表明，在肩部运动中促进斜方肌收缩开始的最佳时间可能是贴扎后即刻。
