Authors: R. Duarte, M. Mesnard, F. De Miollis, A. Ramos, P. Wentzy, M. De Sèze

The electromyography has been used in biomechanical studies as a technique to evaluate the muscular activity since a long time. Several propositions along the years have been suggested according to the correct positioning of the electrodes. Furthermore, the operators’ influence has been neglected during the muscular activity analysis. According to this, this study intended to evaluate the operators’ influence when a misplacement of the electrode occurs. Two different muscles were evaluated (biceps and erector spinae). It was observed that the translational misplacement in the biceps muscles is the critical misplacement error in this muscles. On the other hand, taking into account the erector spinae, the rotational displacement above 30° influences the results due to the fact that the right muscular fiber was not reached.

R. Duarte¹ | M. Mesnard¹ | F. De Miollis¹ | A. Ramos² | P. Wentzy³ | M. De Sèze⁴
1Institut de Mécanique et d’Ingénierie, Université de Bordeaux, France
2Departamento de Engenharia Mecânica, Universidade de Aveiro, Portugal
3Lagarrigue Aquitaine S.A.S., France
4Hospitalier Universitaire de Bordeaux, France