Normalization procedures using maximum voluntary isometric contractions for the serratus anterior and trapezius muscles during surface EMG analysis

Taping across the upper trapezius muscle reduces activity during a standardized typing task – An assessor-blinded randomized cross-over study

“…The procedures included three MVCs for five seconds with a 2-minute rest between as recommended by Ekstrom et al [2005] in order to obtain the maximum signals. UT MVCs were conducted followed by LT MVCs.…”

“…The shoulder was abducted to 90°, the neck was side-bent to the side being tested, rotated to the opposite side and extended. Isometric manual pressure was applied simultaneously to the head and the elbow to maximally facilitate the UT [Ekstrom et al, 2005]. For the LT MVC, the participant lay prone with the arm abducted above the head in line with the muscle fibers of the LT. Isometric manual pressure was applied above the elbow [Ekstrom et al, 2005].…”

Isometric Contraction of Scapular Muscles Activities during Horizontal Abduction and Adduction of the Shoulder

“…Decker et al reported that push-up, dynamic hug, and serratus anterior punch have higher serratus anterior activity and they recommended serratus anterior exercises [21]. Furthermore, Moseley et al and Ekstrom et al indicated that horizontal abduction of the shoulder joint with external rotation is good exercise for the middle trapezius muscle [22,23]. In addition, for the lower trapezius, raising the arm above the head in line with the lower trapezius and rowing are effective.…”

Normalização EMG: considerações da literatura para avaliação da função muscular

“…Os descritores utilizados para este trabalho foram termos em inglês apenas, tais como Electromyography, EMG Normalization, Isometric MVC, Muscular Utilization Ratio, Inter-Individual variability. Para descrever a revisão crítica, 17 artigos científi-cos [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] , sendo dois contendo pacientes sintomá-ticos 8,19 , e dois, de revisão da literatura 4,10 , foram selecionados, conforme mostra a Tabela 1, para explanar o principal tema abordado: "normalização EMG". Os demais artigos referidos na bibliografia são complementares para redação crítica do assunto e entendimento da área.…”