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Article

Effect of Five Bench Inclinations on the Electromyographic Activity of the Pectoralis Major, Anterior Deltoid, and Triceps Brachii during the Bench Press Exercise

1
Health Research Centre, University of Almería, 04120 Almería, Spain
2
Laboratory of Kinesiology, Biomechanics and Ergonomics (KIBIOMER Lab.), Research Central Services, University of Almería, 04120 Almería, Spain
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2020, 17(19), 7339; https://doi.org/10.3390/ijerph17197339
Received: 16 September 2020 / Revised: 2 October 2020 / Accepted: 5 October 2020 / Published: 8 October 2020
(This article belongs to the Special Issue Monitoring and Evaluation of Training in Sport and Exercise)
The bench press exercise is one of the most used for training and for evaluating upper-body strength. The aim of the current study was to evaluate the electromyographic (EMG) activity levels of the pectoralis major (PM) in its three portions (upper portion, PMUP, middle portion, PMMP, and lower portion, PMLP), the anterior deltoid (AD), and the triceps brachii (TB) medial head during the bench press exercise at five bench angles (0°, 15°, 30°, 45°, and 60°). Thirty trained adults participated in the study. The EMG activity of the muscles was recorded at the aforementioned inclinations at 60% of one-repetition maximum (1RM). The results showed that the maximal EMG activity for PMUP occurred at a bench inclination of 30°. PMMP and PMLP showed higher EMG activity at a 0° bench inclination. AD had the highest EMG activity at 60°. TB showed similar EMG activities at all bench inclinations. In conclusion, the horizontal bench press produces similar electromyographic activities for the pectoralis major and the anterior deltoid. An inclination of 30° produces greater activation of the upper portion of the pectoralis major. Inclinations greater than 45° produce significantly higher activation of the anterior deltoid and decrease the muscular performance of the pectoralis major. View Full-Text
Keywords: EMG; chest press; muscle activity; resistance exercise; strength; fitness EMG; chest press; muscle activity; resistance exercise; strength; fitness
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MDPI and ACS Style

Rodríguez-Ridao, D.; Antequera-Vique, J.A.; Martín-Fuentes, I.; Muyor, J.M. Effect of Five Bench Inclinations on the Electromyographic Activity of the Pectoralis Major, Anterior Deltoid, and Triceps Brachii during the Bench Press Exercise. Int. J. Environ. Res. Public Health 2020, 17, 7339. https://doi.org/10.3390/ijerph17197339

AMA Style

Rodríguez-Ridao D, Antequera-Vique JA, Martín-Fuentes I, Muyor JM. Effect of Five Bench Inclinations on the Electromyographic Activity of the Pectoralis Major, Anterior Deltoid, and Triceps Brachii during the Bench Press Exercise. International Journal of Environmental Research and Public Health. 2020; 17(19):7339. https://doi.org/10.3390/ijerph17197339

Chicago/Turabian Style

Rodríguez-Ridao, David, José A. Antequera-Vique, Isabel Martín-Fuentes, and José M. Muyor 2020. "Effect of Five Bench Inclinations on the Electromyographic Activity of the Pectoralis Major, Anterior Deltoid, and Triceps Brachii during the Bench Press Exercise" International Journal of Environmental Research and Public Health 17, no. 19: 7339. https://doi.org/10.3390/ijerph17197339

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