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Authors
Advisor(s)
Abstract(s)
Objetivo: O presente estudo tem como objetivo avaliar a atividade neuromuscular dos
músculos peitoral, serrátil anterior, infra-espinhoso e grande dorsal durante o exercício de
press up box, com diferentes variações. Metodologia: A atividade electromiográfica dos
músculos selecionados de doze participantes do sexo masculino (Média de idades 25,08±4,26
anos; IMC 22,66±1,85 Kg/m2) foi analisada durante diferentes variações do exercício press
up box. Resultados: Foram encontradas diferenças significativas na atividade
electromiográfica dos diferentes músculos em cada variação e na atividade electromiográfica
de cada músculo nas diferentes variações. O músculo que apresentou maior ativação foi o
grande peitoral, porção esternal, com um valor médio de 22% de contração máxima
voluntária, sendo a maior contribuição em superfícies instáveis. Já em superfície estável os
músculos serrátil anterior e infra-espinhoso atingiram valores de 13 e 15% de CMV. O
músculo que apresentou menor atividade muscular foi o grande dorsal. Conclusão: A
atividade electromiográfica dos músculos estudados foi dependente do tipo de variação do
exercício press up box imposta.
Objective: The aim of the present study is to describe the electromyographic activity (sEMG) of the serratus anterior, pectoralis sternal and clavicular portion, infra-spinous and latissimus dorsi muscles, during the press-up box (PUB) exercise, with different variations. Methodology: The sEMG of selected muscles from twelve male participants (Mean age 25.08 ± 4.26 years; BMI 22.66 ± 1.85 kg / m2) were analyzed for different variations of the press up box. Results: Statistically significant differences were found for sEMG between different muscles in each variation, and for each muscle across different variations. Data analysis also suggests that the pectoralis major muscle, sternal portion, presented the greatest activation (22% of the maximum voluntary contraction) mostly on unstable conditions. Moreover, with stable surface the serratus anterior and the infra-spinous muscles reached the values of 13 and 15% of MVC. The muscle that presented the lowest muscle activity was the latissimus dorsi. Conclusion: The sEMG of the studied muscles was dependent on the type of variation of the press up box exercise.
Objective: The aim of the present study is to describe the electromyographic activity (sEMG) of the serratus anterior, pectoralis sternal and clavicular portion, infra-spinous and latissimus dorsi muscles, during the press-up box (PUB) exercise, with different variations. Methodology: The sEMG of selected muscles from twelve male participants (Mean age 25.08 ± 4.26 years; BMI 22.66 ± 1.85 kg / m2) were analyzed for different variations of the press up box. Results: Statistically significant differences were found for sEMG between different muscles in each variation, and for each muscle across different variations. Data analysis also suggests that the pectoralis major muscle, sternal portion, presented the greatest activation (22% of the maximum voluntary contraction) mostly on unstable conditions. Moreover, with stable surface the serratus anterior and the infra-spinous muscles reached the values of 13 and 15% of MVC. The muscle that presented the lowest muscle activity was the latissimus dorsi. Conclusion: The sEMG of the studied muscles was dependent on the type of variation of the press up box exercise.
Description
Projeto de Graduação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Licenciado em Fisioterapia
Keywords
SEMG Ombro Press-up box Cadeia cinética fechada Surface EMG Shoulder Press-up box Close kinetic chain