Reliability of electromyographic amplitude values of the upper limb muscles during closed kinetic chain exercises with stable and unstable surfaces

Araújo, Rodrigo Cappato de; Tucci, Helga Tatiana; Andrade, Rodrigo; Martins, Jaqueline; Bevilaqua-Grossi, Débora; Oliveira, Anamaria Siriani de

doi:10.1016/j.jelekin.2007.11.014

Cited by 34 publications

(24 citation statements)

References 28 publications

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“…These results empirically support the theory proposed by Shumway-Cook and Wollacott 17) , who reported that stabilizer muscle groups tend to co-contract in order to keep the balance of the body on an unstable surface. The increase in muscle activity when executing the push-up plus on the unstable surface, a gym ball, means that a large number of motor units were recruited in order to keep the shoulder properly balanced 15) . However, the left upper trapezius showed more activity on the stable surface, a result which calls for further research on differentiated muscle functions of muscles located above and below the scapula.…”

Section: Discussionmentioning

confidence: 99%

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Periscapular Muscle Activities and Kinematic Analysis of the Performed on Different Supporting Surfaces for the Lower Limbs Push-up Plus Exercise

Yoon

Lee

2013

J Phys Ther Sci

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Abstract. [Purpose] This study examined periscapular muscle activities and performed a kinematic analysis of the push-up plus exercises with the lower limbs supported on a stable surface (bench) and an unstable surface (elastic ball). [Subjects and Method] The subjects were 15 college students. Surface electromyograms were recorded of the upper trapezius, serratus anterior, latissimus dorsi, and infraspinatus while the subjects performed the push-up plus exercises with their feet placed on a bench or an elastic gym ball. Markers for kinematic changes of elbow flexion, shoulder extension, shoulder retraction and scapular adduction were attatched the C7 and T7 spinous processes, both acromions, scapula superior and inferior angles, humeral lateral epicondyles, and ulnar styloid processes. The subjects completed three sets of push-up plus exercise. Three dimensional angles were calculated for the elbow, glenohumeral and scapulothoracic joint motions. The collected data were analyzed using the paired t-test and SPSS 18.0.[Result] There were statistically significant increase in the serratus anterior, infraspinatus, latissimus dorsi muscle activities during push-up plus exercise performed on the unstable surface, while the activity of upper trapezius increased during push up plus exercise performed on the stable surface. The angle of shoulder extension was significantly greater on the stable surface than on the unstable surface. The length of scapular adduction was significantly greater on the stable surface than on the unstable surface.[Conclusion] When the push-up plus exercise was performed on an unstable surface, recruitment of the periscapular muscles helped to stabilize the instable scapula.

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Section: Discussionmentioning

confidence: 99%

“…Several researchers have reported on push-ups using a ball. They report that the exercise helps increase the muscle activities of the triceps brachii and rectus abdominis 9,14,15) . Borstad et al 1) reported a high correlation between muscle activity and scapular movement.…”

Section: Introductionmentioning

confidence: 99%

Periscapular Muscle Activities and Kinematic Analysis of the Performed on Different Supporting Surfaces for the Lower Limbs Push-up Plus Exercise

Yoon

Lee

2013

J Phys Ther Sci

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“…O sinal eletromiográfico do SA foi coletado através do equipamento Miotool, seguindo especificações de De Araujo et al [6]. Um canal adicional foi utilizado para acoplar um gatilho, que determinou o início e o fim da tarefa de fadiga.…”

Section: Materiais E Métodosunclassified

“…O estudo é prospectivo, crossover, aleatorizado e simples cego. Nove homens jovens sem lesões e dor no ombro [média= 22,4 (desviopadrão=3,6) anos; massa corporal 70,6 (7,5) kg; e altura 1,76 (0,06) m] foram aleatorizados em três grupos: grupo fotobiomodulação ativa (GA), grupo fotobiomodulação placebo (GP) e grupo controle (GC).O sinal eletromiográfico do SA foi coletado através do equipamento Miotool, seguindo especificações de De Araujo et al [6]. Um canal adicional foi utilizado para acoplar um gatilho, que determinou o início e o fim da tarefa de fadiga.…”

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Efeitos Da Fotobiomodulação Na Fadiga Do Músculo Serrátil Anterior - Resultados Preliminares

Vieira¹,

Pascoal²,

Anjos³

et al. 2018

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

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Resumo: A fadiga muscular pode influenciar o sinergismo muscular. Atualmente, estudos mostram que a fotobiomodulação (FBM) é capaz de reduzir a fadiga muscular. O objetivo deste estudo foi avaliar se a FBM reduz a fadiga do músculo serrátil anterior (SA). Este estudo é prospectivo, aleatorizado, crossover e simples cego. Nove homens jovens sem lesões no ombro participaram do estudo. O procedimento experimental teve três sessões intervaladas em sete dias. A única diferença entre as sessões foi o tipo de FBM aplicada (ativa ou placebo) ou a não aplicação (controle) no SA bilateralmente previamente a uma tarefa de fadiga feita com os participantes em posição push-up plus até a exaustão. Durante a tarefa de fadiga foi coletado o sinal eletromiográfico do SA. A frequência mediana do sinal foi utilizada para calcular os valores de declínio da fadiga, que foram comparados entre os 3 grupos pela análise de variância com medidas repetidas e comparações múltiplas de Bonferroni, com nível de significancia de α=0.05. Os resultados mostram que não houve diferença estatisticamente significativa para o declínio de fadiga entre os grupos. Desta forma, conclui-se que a FBM não reduziu a fadiga do SA. Palavras-chave: fadiga, eletromiografia, serrátil anterior. Abstract: Muscle fatigue may influene muscular synergism.Currently, studies show that photobiomodulation (FBM) is able to reduce muscle fatigue. The objective of this study was to evaluate whether FBM reduces anterior serratus (SA) muscle fatigue. This study is prospective, randomized, crossover and single blind. Nine young men with no shoulder injuries participated in the study. The experimental procedure had three sessions with seven days of interval between them. The only difference between sessions was the FBM applied (active or sham) or non-application of FBM (control) in the SA bilaterally prior to the fatigue task that was done with the participants in the push-up plus position until exhaustion. During the task, the electromyographic signal of SA was collected. The median frequency of the signal was used to calculate the decline of fatigue values, which were compared between groups using analysis of variance with repeated measures and multiple comparisons of Bonferroni, with a significance level set at α = 0.05. The results show that there was no statistically significant difference for fatigue decline between groups. Therefore, it is concluded that FBM did not reduce SA fatigue. Key words: fatigue, electromyography, serratus anterior. IntroduçãoA fadiga muscular (FM) pode ser definida como uma queda no desempenho muscular quando comparado à intensidade muscular original [1]. Esta redução pode gerar alterações neuromusculares, como por exemplo, alterações no sinergismo muscular [2]. O Serrátil Anterior (SA) é um dos músculos que atuam no sinergismo muscular do ombro e tem importância fundamental na estabilização da escápula durante a elevação do braço [3]. A fadiga deste músculo pode causar alteração no sinergismo muscular e, consequentemente, comprometer a cinemátic...

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“…Standardized isometric effort was chosen for analysis because it generates a reliable model to obtain comparisons of EMG levels between exercises. 5 MIE was defined as the maximal force that a person could exert against the wood plank, without pushing his body away from it, while holding the isometric task position. Three repetitions of each task were performed in a random sequence, and the mean of the values registered by the load cell for a task was defined as the MIE for that task.…”

Section: Mie Standardization and Auditory Feedback Familiarizationmentioning

confidence: 99%

Muscle Activation of Selected Shoulder Muscles During Unilateral Wall and Bench Press Tasks Under Submaximal Isometric Effort

Tucci

Ciol

Araújo

et al. 2011

Journal of Orthopaedic & Sports Physical Therapy

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Study Design Controlled laboratory study. Objective To assess the activation of 7 shoulder muscles under 2 closed kinetic chain (CKC) tasks for the upper extremity using submaximal isometric effort, thus providing relative quantification of muscular isometric effort for these muscles across the CKC exercises, which may be applied to rehabilitation protocols for individuals with shoulder weakness. Background CKC exercises favor joint congruence, reduce shear load, and promote joint dynamic stability. Additionally, knowledge about glenohumeral and periscapular muscle activity elicited during CKC exercises may help clinicians to design protocols for shoulder rehabilitation. Methods Using surface electromyography, activation level was measured across 7 shoulder muscles in 20 healthy males, during the performance of a submaximal isometric wall press and bench press. Signals were normalized to the maximal voluntary isometric contraction, and, using paired t tests, data were analyzed between the exercises for each muscle. Results Compared to the wall press, the bench press elicited higher activity for most muscles, except for the upper trapezius. Levels of activity were usually low but were above 20% maximal voluntary isometric contraction for the serratus anterior on both tasks, and for the long head triceps brachii on the bench press. Conclusions Both the bench press and wall press, as performed in this study, led to relatively low EMG activation levels for the muscles measured and may be considered for use in the early phases of rehabilitation. J Orthop Sports Phys Ther 2011;41(7):520–525, Epub 2 February 2011. doi:10.2519/jospt.2011.3418

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Reliability of electromyographic amplitude values of the upper limb muscles during closed kinetic chain exercises with stable and unstable surfaces

Cited by 34 publications

References 28 publications

Periscapular Muscle Activities and Kinematic Analysis of the Performed on Different Supporting Surfaces for the Lower Limbs Push-up Plus Exercise

Periscapular Muscle Activities and Kinematic Analysis of the Performed on Different Supporting Surfaces for the Lower Limbs Push-up Plus Exercise

Efeitos Da Fotobiomodulação Na Fadiga Do Músculo Serrátil Anterior - Resultados Preliminares

Muscle Activation of Selected Shoulder Muscles During Unilateral Wall and Bench Press Tasks Under Submaximal Isometric Effort

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