The within-day reliability of scapular and shoulder EMG measurements in asymptomatic individuals during shoulder abduction

New Zealand journal of physiotherapy

article

Aishwarya Grime¹  Sophie Daines¹  Lucy Pringle¹  Lee Heang¹  Daniel Cury Ribeiro² 

[1] School of Physiotherapy, University of Otago;Centre for Physical Activity, Heath, and Rehabilitation Research, School of Physiotherapy, University of Otago

关键词: Electromyography;    Reliability;    Scapular;    Shoulder;   

DOI  :  10.15619/NZJP/46.2.02

学科分类：医学（综合）

来源: Physiotherapy New Zealand

【 摘 要 】

The purpose of this study was to assess the within-day reliability of scapular and shoulder surface electromyography (sEMG) measurements during shoulder abduction. Twenty asymptomatic individuals performed 10 repetitions of shoulder abduction, which was then retested 10 minutes later. sEMG was used to record the activity of upper and lower trapezius; anterior, middle and posterior deltoids; supraspinatus; infraspinatus; and serratus anterior muscles. Muscle activation was expressed as a percentage of maximum voluntary isometric contraction (MVIC). The intraclass correlation coefficient (ICC) and standard error of measurement (SEM) were used to assess within-day reliability for concentric and eccentric phases of shoulder abduction. For the concentric phase, ICC values ranged from 0.87 to 0.98 and SEM values from 8.6% to 18.9% MVIC. For the eccentric phase, ICC values ranged from 0.65 to 0.97, and SEM values from 9.8% to 24.4% MVIC. In asymptomatic individuals, EMG measurements of the scapular and shoulder muscles during the concentric phase of shoulder abduction had excellent reliability, and for the eccentric phase, had good to excellent reliability depending on the analysed muscle. These findings provide valuable information on reliability of sEMG for assessing muscle activity of scapular and shoulder muscles.

【 授权许可】

Unknown