Inspiratory muscular activation during threshold® therapy in elderly healthy and patients with COPD

Andrade, Armèle Dornelas de; Silva, T.N.S.; Vasconcelos, Helga Negreiros de; Marcelino, Milton; Rodrigues‐Machado, Maria da Glória; Filho, Valdecir Castor Galindo; Moraes, Noemia; Marinho, Patrícia Érika de Melo; Amorim, César Ferreira

doi:10.1016/j.jelekin.2005.06.002

Cited by 84 publications

(53 citation statements)

References 26 publications

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“…Costa et al (13) assessed the participation of the SCM during deep inspiration in healthy adults and observed a higher electromyographic activity of the SCM when inspiratory movements were performed in a fast and abrupt way compared to slow inspirations. De Andrade et al (27) reported an increase of 7% in the electromyographic activity of the SCM during muscular training with Threshold ® (Respironics, Cedar Grove, NJ, USA).…”

Section: Discussionmentioning

confidence: 99%

Breathing pattern, thoracoabdominal motion and muscular activity during three breathing exercises

Tomich

França

D’Iorio

et al. 2007

Braz J Med Biol Res

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The objective of the present study was to evaluate breathing pattern, thoracoabdominal motion and muscular activity during three breathing exercises: diaphragmatic breathing (DB), flow-oriented (Triflo II) incentive spirometry and volume-oriented (Voldyne) incentive spirometry. Seventeen healthy subjects (12 females, 5 males) aged 23 ± 5 years (mean ± SD) were studied. Calibrated respiratory inductive plethysmography was used to measure the following variables during rest (baseline) and breathing exercises: tidal volume (Vt), respiratory frequency (f), rib cage contribution to Vt (RC/Vt), inspiratory duty cycle (Ti/Ttot), and phase angle (PhAng). Sternocleidomastoid muscle activity was assessed by surface electromyography. Statistical analysis was performed by ANOVA and Tukey or Friedman and Wilcoxon tests, with the level of significance set at P < 0.05. Comparisons between baseline and breathing exercise periods showed a significant increase of Vt and PhAng during all exercises, a significant decrease of f during DB and Voldyne, a significant increase of Ti/Ttot during Voldyne, and no significant difference in RC/Vt. Comparisons among exercises revealed higher f and sternocleidomastoid activity during Triflo II (P < 0.05) with respect to DB and Voldyne, without a significant difference in Vt, Ti/Ttot, PhAng, or RC/Vt. Exercises changed the breathing pattern and increased PhAng, a variable of thoracoabdominal asynchrony, compared to baseline. The only difference between DB and Voldyne was a significant increase of Ti/Ttot compared to baseline. Triflo II was associated with higher f values and electromyographic activity of the sternocleidomastoid. In conclusion, DB and Voldyne showed similar results while Triflo II showed disadvantages compared to the other breathing exercises.

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Section: Discussionmentioning

confidence: 99%

Breathing pattern, thoracoabdominal motion and muscular activity during three breathing exercises

Tomich

França

D’Iorio

et al. 2007

Braz J Med Biol Res

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“…For the three studied muscles, the upper trapezius, sternocleidomastoid and intercostal sternum, there was a linear relationship of increased activation with increase of load. Andrade et al (2005) had already established that physical exercise increases the performance of inspiratory muscles thereby increasing the tolerance to activities [28]. Noble et al (2006) observed an increase in electromyographic activity of the respiratory muscles during progressive loading of respiratory effort [29].…”

Section: Resultsmentioning

confidence: 99%

Electromyographic Pattern of Respiratory Muscles in Young People during Incremental Exercise

Amorim¹

2016

JESO

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Open Access Research ArticleVentilation occurs through the coordinated contraction of specific muscle groups, which in inspiration produces enough energy to distend the pulmonary structures [3,5]. In the healthy individual the ventilatory requirements during exercise, are easily achieved because the breathing muscles are anatomically suited for increasing ventilatory requirements and neural regulation of respiration is ideal [6].It should be emphasized that the accessory respiratory muscles are progressively recruited with the increased ventilatory demand. Thus, sharing the load required to bear hyperpnea, shallow and rapid breathing that occurs during exercise [6,7].Among the respiratory muscles recruited during exercise, the external intercostal sternum sternums are considered important because of their important postural and respiratory role in stabilizing and maintaining the shape and integrity of the rib cage when the ribs elevate and expand the chest during inspiration. The sternocleidomastoid is also considered by some authors the most important accessory muscle of inspiration along with the upper trapezius whose ventilatory role is to assist in the inspiration on effort helping to raise the rib cage [8].Understanding the physiological changes of the respiratory muscles before physical effort is a largely explored subject in exercise physiology. The proper functioning of these muscles results in an improvement of the performance of elite athletes, besides its great importance for chronic lung diseases, Parkinson's, and cardiovascular disorders whose clinical changes result in weakness of these muscles [9]. AbstractDuring exercise, the muscles involved inbreathing is progressively recruited due to increased demand in respiratory effort. Surface electromyography (sEMG) is a technique that allows evaluation of these muscles providing information on the recruitment of motor units. The aim of this study was describe the electrical activity of the upper trapezius, sternocleidomastoid and intercostal sternum muscles in active and sedentary young subjects during incremental exercise test. Cross-sectional research design, including 20 young adults of both genders, aged 18to 36 years participated of study. The EMG signal amplitudes were analyzed in the time domain from muscular activity of the upper trapezius, sternocleidomastoid and intercostal sternum muscles, in relation to the variation of the load imposed on the incremental exercise. A mixed linear adjustments model was used to study the effects of the load, groups (active and sedentary) and the interaction (load x group) .The results there was no significant difference between-groups and interaction effects (group x load). Significant increase in the EMG signal amplitude was however found during the increase of the load for the three muscles studied. There was an increase in the amplitude of the electromyographic signal of accessories respiratory muscles in relation to the load increase during incremental exercise test.

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“…Na literatura há artigos que contemplam o posicionamento dos eletrodos no diafragma em EMGs, e cada um desses artigos trazem posicionamentos diferentes. Porém locais próximos [8,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34].…”

Section: Discussionunclassified

Desafios Na Captação Do Sinal De Eletromiográfico Do Músculo Diafragma

Kawamura¹,

Silva²,

Jnior³

et al. 2018

Anais Do v Congresso Brasileiro De Eletromiografia E Cinesiologia E X Simpósio De Engenharia Biomédica

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Resumo: Nos últimos anos, o interesse na análise de sinais de eletromiografia dos músculos respiratórios tem aumentado devido ao número de doenças neuromusculares e respiratórias que impactam na força diafragmática e sobrecarregam os músculos acessórios. Porém o registro adequado da excursão diafragmática é um grande desafio. O presente artigo busca e apresentar os desafios a respeito da viabilidade do uso da eletromiografia (EMG) de superfície para análise da atividade elétrica muscular do diafragma. Com esse propósito foram procurados na literatura artigos com possíveis padronizações de posicionamento de eletrodos, e realizado as mensurações de cinco pacientes sendo três idosos portadores da doença de Parkinson e dois jovens saudáveis. O aparelho utilizado foi o Miotool (Empresa Miotec®, eletrodos em formato Jacaré). Observou-se que a falta de um consenso a cerca do opcionalmente dos eletrodos de superfície dificulta uma metodologia eficaz para que se obtenha a captação do sinal eletromiográfico do músculo diafragma. Sendo assim, sugere-se a criação de um protocolo para posicionamento da musculatura diafragmática para melhor captação e análise dos sinais. Palavras

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Inspiratory muscular activation during threshold® therapy in elderly healthy and patients with COPD

Cited by 84 publications

References 26 publications

Breathing pattern, thoracoabdominal motion and muscular activity during three breathing exercises

Breathing pattern, thoracoabdominal motion and muscular activity during three breathing exercises

Electromyographic Pattern of Respiratory Muscles in Young People during Incremental Exercise

Desafios Na Captação Do Sinal De Eletromiográfico Do Músculo Diafragma

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