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Changes in Muscle Pattern Activity during the Asymmetric Flat Bench Press (Offset Training)

Author

Listed:
  • Jakub Jarosz

    (Institute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education in Katowice, ul. Mikolowska 72a, 40-065 Katowice, Poland)

  • Artur Gołaś

    (Institute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education in Katowice, ul. Mikolowska 72a, 40-065 Katowice, Poland)

  • Michal Krzysztofik

    (Institute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education in Katowice, ul. Mikolowska 72a, 40-065 Katowice, Poland)

  • Patryk Matykiewicz

    (Institute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education in Katowice, ul. Mikolowska 72a, 40-065 Katowice, Poland)

  • Katarzyna Strońska

    (Institute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education in Katowice, ul. Mikolowska 72a, 40-065 Katowice, Poland)

  • Adam Zając

    (Institute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education in Katowice, ul. Mikolowska 72a, 40-065 Katowice, Poland)

  • Adam Maszczyk

    (Institute of Sport Sciences, The Jerzy Kukuczka Academy of Physical Education in Katowice, ul. Mikolowska 72a, 40-065 Katowice, Poland)

Abstract

Background: This study aimed to compare the muscle activity between the symmetric and selected asymmetric loads (2.5%; 5% and 7.5% differences in load position between sides of the bar) during the flat bench press (BP) exercise at 70%1RM. The study included 10 resistance-trained males (25.3 ± 2.3 years; 82.9 ± 6.9 kg; 177.8 ± 4.5 cm; 1RM BP: 104.5 ± 8.6 kg; experience: 5.6 ± 1.5 years). Methods: To assess the differences in muscle activity between both sides of the body and load placement, the participants performed several attempts of the BP with symmetric and asymmetric load at 70%1RM in a random order (symmetric; 2.5%; 5% and 7.5% differences in load position between sides of the bar). Peak muscle activity of dominant and non-dominant body-side was recorded for the pectoralis major (PM), anterior deltoid (AD), and the long head of the triceps brachii (TB). Results: A two-way repeated-measures analysis of variance (ANOVA) indicated a statistically significant main interaction between side and load ( p < 0.01) for AD, PM and TB muscles. Conclusion: The results of this study showed that asymmetrically loaded BP leads to significantly higher muscle activity on the loaded side of the body. The offset training method during bilateral resistance exercise may be an effective and simple approach for reductions in muscle imbalances and improvement in bilateral exercise performance.

Suggested Citation

  • Jakub Jarosz & Artur Gołaś & Michal Krzysztofik & Patryk Matykiewicz & Katarzyna Strońska & Adam Zając & Adam Maszczyk, 2020. "Changes in Muscle Pattern Activity during the Asymmetric Flat Bench Press (Offset Training)," IJERPH, MDPI, vol. 17(11), pages 1-9, June.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:11:p:3912-:d:365745
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    Citations

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    Cited by:

    1. Atle Hole Saeterbakken & Tom Erik Solstad & Matthew Peter Shaw & Vidar Andersen, 2020. "Letter to the Editor—Changes in Muscle Pattern Activity during the Asymmetric Flat Bench Press," IJERPH, MDPI, vol. 18(1), pages 1-2, December.
    2. Atle Hole Saeterbakken & Nicolay Stien & Helene Pedersen & Tom Erik Jorung Solstad & Kristoffer Toldnes Cumming & Vidar Andersen, 2021. "The Effect of Grip Width on Muscle Strength and Electromyographic Activity in Bench Press among Novice- and Resistance-Trained Men," IJERPH, MDPI, vol. 18(12), pages 1-12, June.
    3. Grzegorz Wojdala & Artur Golas & Michal Krzysztofik & Robert George Lockie & Robert Roczniok & Adam Zajac & Michal Wilk, 2020. "Impact of the “Sling Shot” Supportive Device on Upper-Body Neuromuscular Activity during the Bench Press Exercise," IJERPH, MDPI, vol. 17(20), pages 1-12, October.

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