Comparação do exercício agachamento nas superfícies estável e instável sobre a eletromiografia e percepção subjetiva de esforço

Marcelly Mancini; Amanda Fernandes Brown; Jefferson da Silva Novaes; Michelle de Souza Ribeiro; Patrícia Silva Panza; Leandro Raider dos Santos; Humberto Lameira Miranda; Jeferson Macedo Vianna

doi:10.5585/conssaude.v18n2.10564

Authors

Marcelly Mancini Programa de Pós-graduação em Educação Física – Universidade Federal de Juiz de Fora, UFJF https://orcid.org/0000-0001-6324-4406
Amanda Fernandes Brown Programa de Pós-graduação em Clínica Médica – Universidade Federal do Rio de Janeiro, UFRJ https://orcid.org/0000-0001-7971-330X
Jefferson da Silva Novaes Escola de Educação Física e Desportos – Universidade Federal do Rio de Janeiro, UFRJ Faculdade de Educação Física e Desportos – Universidade Federal de Juiz de Fora, UFJF https://orcid.org/0000-0001-9304-6574
Michelle de Souza Ribeiro Programa de Pós-graduação em Educação Física – Universidade Federal do Rio de Janeiro, UFRJ https://orcid.org/0000-0002-8923-1715
Patrícia Silva Panza Programa de Pós-graduação em Educação Física – Universidade Federal de Juiz de Fora, UFJF https://orcid.org/0000-0002-9683-0548
Leandro Raider dos Santos Faculdade de Educação Física – Centro de Ensino Superior de Valença, CESVA https://orcid.org/0000-0003-4163-2250
Humberto Lameira Miranda Escola de Educação Física e Desportos – Universidade Federal do Rio de Janeiro, UFRJ https://orcid.org/0000-0001-7911-3910
Jeferson Macedo Vianna Faculdade de Educação Física e Desportos – Universidade Federal de Juiz de Fora, UFJF https://orcid.org/0000-0003-1594-4429

DOI:

https://doi.org/10.5585/conssaude.v18n2.10564

Keywords:

Electromyography, Proprioception, Resistance training, Muscle strength

Abstract

Introduction: Unstable surfaces (US) can be used in resistance training in order to promote greater stimuli of the neuromuscular system. Objective: To verify the effect of different strength intensities of squatting on stable surfaces (SS) and unstable surfaces (US) on electromyography activity (EMG) and perception of effort (PE). Methods: EMG and PE of 15 men trained to squat on SS and on US with randomized loads were verified. Results: Regarding the EMG, there were no significant differences between loads on SS and US. The PE was higher in the 60% 1RM condition on the US when compared to 40% on the US and 50% on the SS. Differences were also found in the condition of 70% of 1RM on SS when compared to 40% on US and 50% on SS. Conclusion: The squat, even with a lower load, performed on the US produces similar EMG activity to what it does on SS. On the other hand, the PE at moderate intensity was higher on the US.

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Author Biography

Amanda Fernandes Brown, Programa de Pós-graduação em Clínica Médica – Universidade Federal do Rio de Janeiro, UFRJ

Universidade Federal do Rio de Janeiro Escola de Educação Física e Desportos Departamento de Ginástica

References

Kohler JM, Flanagan SP, Whiting WC. Muscle activation patterns while lifting stable and unstable loads on stable and unstable surfaces. J Strength Cond Res. 2010;24(2):313-21.

Behm DG, Drinkwater EJ, Willardson JM, Cowley PM. The use of instability to train the core musculature. Appl Physiol Nutr Metab. 2010;35(1):91-108.

Behm DG, Anderson KG, Curnew RS. Muscle force and activation under stable and unstable conditions. J Strength Cond Res. 2002;6:416-22.

McBride JM, Cormie P, Deane R. Isometric squat force output and muscle activity in stable and unstable conditions. J Strength Cond Res. 2006;20:915-8.

Saeterbakken AH, Fimland MS. Muscle force output and electromyographic activity in squats with various unstable surfaces. J Strength Cond Res. 2013;27:130-6.

Kenneth A, Behm DG. Trunk muscle activity increases with unstable squat movements. Can J Appl Physiol. 2005;30(1):33-45.

Willardson JM, Fontana FE, Bressel E. Effect of surface stability on core muscle activity for dynamic resistance exercises. Int J Sports Physiol Perform. 2009;4(1):97-109.

Marshall P, Murphy B. Changes in muscle activity and perceived exertion during exercises performed on a swiss ball. Appl Physiol Nutr Metab. 2006;31(4):376-83.

Panza P, Aranda LC, Damasceno VO, Bentes CM, Novaes JS, Behm DG. Energy cost, number of maximum repetitions, and rating of perceived exertion in resistance exercise with stable and unstable platforms. J Exerc Physiol Online. 2014;17(3):77-87.

Brown AF, Vianna JM, Dias IB, Miranda HL, Rodrigues Neto G, Novaes JS. Acute effects of different strength intensities on unstable and stable platforms on strength performance and subjective effort perception in bench press exercise. Med Sport. 2014;18(4):160-4.

Aranda LC, Mancini M, Campos YAC, Sousa ED, Vianna JM, Silva-Grigoletto. Comparison of the perceived subjective exertion and total load lifted response in resistance exercises performed on stable and unstable platforms. Rev Bras Cineantropom Desempenho Hum. 2015;17(3):300-8.

Beck TW. The importance of a priori sample size estimation in strength and conditioning research. J Strength Cond Res. 2013;27:2323-37.

Shephard RJ. PAR-Q, Canadian Home Fitness Test and exercise screening alternatives. Int J Sports Med. 1988;5(3):185-95.

ACSM. American College of Sports Medicine position stand. Diretrizes do ACSM para os testes de esforço e sua prescrição. 9a ed. Rio de Janeiro: Guanabara Koogan, 2014.

Robertson RJ, Goss FL, Rutkowski J, Lenz B, Dixon C, Timmer J et al. Concurrent validation of the OMNI perceived exertion scale for resistance exercise. Med Sci Sports Exerc. 2003;35(2):333-41.

Huebner A, Faenger B, Schenk P, Scholle HC, Anders C. Alteration of Surface EMG amplitude levels of five major trunk muscles by defined electrode location displacement. J Electromyogr Kinesiol. 2015;25(2):214-23.

Cohen J. A power primer. Psychol Bull. 1992, 112(1): 155-159.

McBride JM, Larkin TR, Dayne AM, Haines TL, Kirby TJ. Effect of absolute and relative loading on muscle activity during stable and unstable squatting. Int J Sports Physiol Perfom. 2010;5(2):177-83.

Wahl MJ, Behm DG. Not all instability training devices enhance muscle activation in highly resistance-trained individuals. J Strength Cond Res. 2008;22(4):1360-70.

Norwood JT, Anderson GS, Gaetz MB, Twist PW. Electromyographic activity of the trunk stabilizers during stable and unstable bench press. J Strength Cond Res. 2007;21(2):343-7.

Uribe BP, Coburn JW, Brown LE, Judelson DA, Khamouj AV, Nguven D. Muscle activation when performing the chest press and shoulder press on a stable bench vs. a Swiss ball. J Strength Cond Res. 2010;24(4):1028-33.