ELECTROMYOGRAPHIC INTER-LIMB ASYMMETRY IN BENCH PRESS EXERCISE IN ELITE PARALYMPICS WEIGHTLIFTERS

Authors

Esteban Aedo-Muñoz, Universidad de SantiagoFollow
Celso Sanchez-Ramírez, Universidad de SantiagoFollow
Christopher Moya-Jofre, Biomechanics Laboratory, Chilean High Performance Center, Santiago, ChileFollow
Alejandro Bustamante-Garrido, Biomechanics Laboratory, Chilean High Performance Center, Santiago, ChileFollow
Mauricio Araya-Ibacache, Biomechanics Laboratory, Chilean High Performance Center, Santiago, ChileFollow
Fabio Dal Bello, Physical Activity and Sports Science Master Program, Universidad Santo Tomás, Santiago, ChileFollow
Ciro-José Brito, Postgraduate Program in Physical Education. Physical Education Department. Federal University of Juiz de Fora, BrazilFollow
Bianca Miarka, Postgraduate Program in Physical Education, School of Physical Education and Sports, Department of Fights. Federal University of Rio de JaneiroFollow

Category

Olympic

Document Type

Paper

Abstract

The purpose of this study was to describe inter-limb asymmetry in three muscle groups in a sample of Paralympic weightlifters during an 80% RM bench press. The sample was composed of 7 subjects belonging to the Chilean elite powerlifting. Surface electromyography was assessed in major pectoral, deltoid anterior and triceps brachii. The magnitude of the response was calculated through root mean square (RMS). Symmetry Index was calculated for an interlimb differences measure. Only the pectoralis major muscle showed significant differences between limbs (right 84.7 ± 41.3; left 66.1 ± 19.3 RMS) (p=0.05) and the SI median greatest value (19.74 ± 24.59%). Anterior deltoid showed high individual differences in two athletes with upper 80% SI values. More studies should assess asymmetry with the objective to decrease this injuries risk factor.

Recommended Citation

Aedo-Muñoz, Esteban; Sanchez-Ramírez, Celso; Moya-Jofre, Christopher; Bustamante-Garrido, Alejandro; Araya-Ibacache, Mauricio; Dal Bello, Fabio; Brito, Ciro-José; and Miarka, Bianca (2019) "ELECTROMYOGRAPHIC INTER-LIMB ASYMMETRY IN BENCH PRESS EXERCISE IN ELITE PARALYMPICS WEIGHTLIFTERS," ISBS Proceedings Archive: Vol. 37: Iss. 1, Article 67.
Available at: https://commons.nmu.edu/isbs/vol37/iss1/67