Estudo eletromiografico dos musculos eretor da espinha , reto do abdome, gluteo maximo e reto da coxa, na posição em pe com carga nos membros superiores

AUTOR(ES)
DATA DE PUBLICAÇÃO

1998

RESUMO

The electromyographic study in erector spinae, rectus abdominis, glutaeous maximus and reto femoris muscles was accomplished in female volunteers from 18 to 27 years old, previously selected. The muscles elec~ric activities was caught with surface electrodes, in standing and static posture, with the parallels and horizontal upper limbs with load in this hands. The IQad was equivalent to 5% and 10% of the body wheight of each volunteer. The volunteers remained first with their elbows in total extension and then were kept in 90° with semi-flexing of the glenohumeralia articulation and finally with maximum flexing of the glenohumeralia articulation and elbows with the load near the body. For the statistical study it was used the analysis of variance to tpe causality experiments in blocks with fatorial scheme, and complemented with the Tukey s test with the significance levei of 5%. According to the results, the electric activity of the erector spinae and glutaeous maximus muscles was . statistically greater than the other muscles in the position where the load was in a horizontal distance greatest relating to the body, when the upper limbs were paralels in the same level of the shoulders and with the elbows in total extension. The reto abdominis and reto femoris present minor eletric activity ~ut also statistically significant. Therefore it was observed that it s better to maintain the loads as near the body as possible, in order to decrease fatigyes and avoid injuries in the lumbar region that are common in some professions. In this study it was clearly observed the influence of the load and the distance have over the studied musculature associated with the standing erect posture

ASSUNTO(S)

eletromiografia postura humana

ACESSO AO ARTIGO

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