Normalization of the trapezius sEMG signal – a reliability study on women with and without neck-shoulder pain

Cid, Marina Machado; Januário, Letícia Bergamin; Zanca, Gisele Garcia; Mattiello, Stela Márcia; Oliveira, Ana Beatriz

doi:10.1016/j.bjpt.2017.09.007

Cited by 21 publications

(7 citation statements)

References 60 publications

(82 reference statements)

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“…Our reliability study of sEMG measurements during the three tasks confirmed that the sEMG is a reliable tool for the measurement of neck and shoulder muscle activity in dentists. These findings coincide with authors such as Chaikumarn et al [34], whose study population was office workers with cervical symptoms, and Machado et al [35], who performed measurements on women with and without neck-shoulder symptoms. We were unable to find reliability studies of the sEMG on dentists.…”

Section: Discussionsupporting

confidence: 90%

The Combination of Different Ergonomic Supports during Dental Procedures Reduces the Muscle Activity of the Neck and Shoulder

García-Vidal

López-Nicolás

Sánchez-Sobrado

et al. 2019

JCM

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Ergonomic supports have become popular for the prevention of musculoskeletal disorders. This study sought to evaluate the efficacy of different ergonomic supports and their combination to reduce muscle activity of the neck and shoulder muscles. A one-way repeated measures design was used to evaluate 36 practicing dentists while they performed three posterior composite restoration procedures on a phantom head. Portable surface electromyography (sEMG) recordings were used to measure the muscle activity of three muscles (Upper Trapezius, Lateral Deltoid and Anterior Deltoid) in the dominant upper extremity, with and without the use of different ergonomic supports (ergonomic stool, magnification lenses and both) during the performance of these tasks. A repeated measures analysis of variance was used. The muscle activity of all muscles differed significantly across the four ergonomic conditions during the three tasks. The use of ergonomic supports such as magnification lenses, the ergonomic stool, or the combination of both, is effective for decreasing the muscle activity of the three muscles during the three tasks, when compared to standard practice. In addition, the decrease of muscle activity was higher using magnification lenses when compared to the ergonomic stool. Furthermore, the greatest decrease was found with the combination of both supports.

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Section: Discussionsupporting

confidence: 90%

The Combination of Different Ergonomic Supports during Dental Procedures Reduces the Muscle Activity of the Neck and Shoulder

García-Vidal

López-Nicolás

Sánchez-Sobrado

et al. 2019

JCM

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“…45 We chose the submaximum voluntary contractions to normalize signals from the trapezius and the anterior deltoid muscles because, according to Burden, 46 they can be as reliable as those from maximum voluntary contractions. 47 Further, during maximum voluntary contractions or submaximum voluntary contractions, the contraction was isometric, whereas during the test it was dynamic. Therefore, we present the data with and without normalization, consistent with methods that are commonly reported in the literature.…”

Section: Discussionmentioning

confidence: 99%

Acute Effects of the 6-Minute Pegboard and Ring Test in COPD

Reis¹,

Basso-Vanelli²,

Beltrame

et al. 2019

Respir Care

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BACKGROUND: There are few reports in the literature supporting the understanding of the physiological mechanisms of intolerance in patients with COPD to perform unsupported upper limb activities. The aims of this study were to quantify the electrical activity and oxygenation of inspiratory and upper limb muscles, and to investigate whether electromyographic manifestations of muscle fatigue are related to upper limb function as assessed by the 6-min pegboard and ring test (6PBRT) in subjects with COPD and in healthy subjects. METHODS: Thirty subjects with COPD (FEV 1 42.1 ؎ 16.4% predicted; 68.0 ؎ 7.6 y old) comprised the COPD group, and 34 healthy subjects (66.8 ؎ 8.0 y old) comprised the control group. Both groups were assessed for body composition with dual-energy radiograph absorptiometry and spirometry. The 6PBRT was performed with simultaneous assessment of electromyography, near-infrared spectroscopy, and gas analyses (expiratory minute volume). RESULTS: Differences were observed between groups for performance (number of rings) in the 6PBRT, with the COPD group achieving lower values than the control group (P < .001). The ventilatory demand (expiratory minute volume/maximum voluntary ventilation) and root mean square amplitude of the sternocleidomastoid muscle were higher in the COPD group than in the control group (P < .04). Lower values for oxyhemoglobin and total hemoglobin were found in intercostal muscles of the COPD group compared to the control group. The root mean square amplitude of the intercostal muscles was lower in the COPD group, while it was similar between groups for anterior deltoid and trapezius muscles. Median frequency of anterior deltoid muscles presented a decreased in both groups. CONCLUSIONS: Our results indicate that the 6PBRT was performed at a higher electrical activity in the accessory inspiratory muscles, such as the sternocleidomastoid muscle, and a lower oxygenation profile in the intercostal muscles in subjects with COPD compared with healthy controls, but without muscle fatigue signs. These findings suggest that the higher ventilatory demand presented in subjects with COPD could have contributed to the worse performance in this group without signals of peripheral muscle limitation.

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“…Dedering et al [19] stated that the use of EMG to examine for erector spinae muscle fatigue in subjects with low back pain had a high test-retest reliability of ICC=0.85. A study by Cid et al [20] found that the reliability of the EMG results for maximal contraction activity of the trapezius muscle in subjects with neck pain and healthy adults was high with ICC=0.97 and also suggested that sEMG is helpful in examining muscle contraction activities.…”

Section: Discussionmentioning

confidence: 99%

Reliability and validity of new evaluation methods using static surface electromyography in persons with neck pain

Kim

Yun

et al. 2019

PTRS

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The aim of this study was to evaluate the validity and reliability of using static surface electromyography (sEMG) on persons with neck pain and in healthy adults. Design: Cross-sectional study. Methods: Twenty-two female participants with neck pain and thirty healthy adults in the age group of 20-65 years were recruited in this study. To evaluate the validity and reliability of sEMG in subjects with neck pain, the subjects'characteristics were recorded and the Visual Analog Scale (VAS) and Neck Disability Index (NDI) were examined in addition to sEMG and algometer tests being carried out on the subjects. The site for using the sEMG and algometer was the upper trapezius. sEMG test-retest reliability was measured by intraclass correlation coefficients (ICCs). Independent t-tests were used to analyze the differences in the dependent variables between subjects with neck pain and healthy adults. The Pearson correlation coefficient was used to examine the linear relationship between measured variables. Results: sEMG and algometer tests were reliable according to the test-retest reliability results in subjects with neck pain and healthy adults (ICC=0.815-0.979). The results of this study showed that there were significant differences in respect to age, VAS, sEMG and algometer tests between persons with neck pain and healthy adults (p<0.05). The VAS and NDI were statistically correlated with sEMG and algometer results (p<0.05). Conclusions: In this study, we investigated the clinical usefulness of the static sEMG test in evaluating the pain scale of persons with neck pain with high reliability and validity.

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Normalization of the trapezius sEMG signal – a reliability study on women with and without neck-shoulder pain

Cited by 21 publications

References 60 publications

The Combination of Different Ergonomic Supports during Dental Procedures Reduces the Muscle Activity of the Neck and Shoulder

The Combination of Different Ergonomic Supports during Dental Procedures Reduces the Muscle Activity of the Neck and Shoulder

Acute Effects of the 6-Minute Pegboard and Ring Test in COPD

Reliability and validity of new evaluation methods using static surface electromyography in persons with neck pain

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