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http://hdl.handle.net/1843/42448| Type: | Artigo de Periódico |
| Title: | Individual responses to different vibration frequencies identified by electromyography and dynamometry in different types of vibration application |
| Authors: | Mariana Paulino Oliveira Hans-Joachim Karl Menzel Darryl Cochrane Marcos Daniel Motta Drummond Carlo Demicheli Guilherme Menezes Lage Bruno Pena Couto |
| Abstract: | Oliveira, MP, Menzel, H-JK, Cochrane, DJ, Drummond, MD, Demicheli, C, Lage, G, and Couto, BP. Individual responses to different vibration frequencies identified by electromyography and dynamometry in different types of vibration application. J Strength Cond Res 35(6): 1748–1759, 2021—The application of mechanical vibration is a common neuromuscular training technique used in sports training programs to generate acute increases in muscle strength. The principal aim of the study was to compare the individual optimal vibration frequency (IOVF) identified by electromyography (EMG) activity and force production in strength training. Twenty well-trained male volunteers (age: 23.8 ± 3.3 years) performed a familiarization and 2 interventions sessions, which included 5 maximal voluntary contractions (MVCs) of the elbow flexors with a duration of 10 seconds and 5-minute intervals between each MVC. The first MVC was performed without vibration followed by 4 randomized MVCs with application of vibration in the direction of the resultant muscle forces' vector (VDF) or whole-body vibration (WBV) at frequencies of 10, 20, 30, or 40 Hz. The mechanical vibration stimulus was superimposed during the MVC. Individual optimal vibration frequency, as identified by EMG, did not coincide with IOVF identified by force production; low agreement was observed between the vibration frequencies in generating the higher EMG activity, maximal force, and root mean square of force. These findings suggest that the magnitude of the vibratory stimulus response is individualized. Therefore, if the aim is to use acute vibration in conjunction with strength training, a preliminary vibration exposure should be conducted to determine the individualized vibratory stimulus of the subject, so that training effects can be optimized. |
| Subject: | Vibração Força muscular Exercícios físicos Eletromiografia Exercício isométrico |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | EEF - DEPARTAMENTO DE ESPORTES |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1519/JSC.0000000000002985 |
| URI: | http://hdl.handle.net/1843/42448 |
| Issue Date: | Jun-2021 |
| metadata.dc.url.externa: | https://journals.lww.com/nsca-jscr/Abstract/2021/06000/Individual_Responses_to_Different_Vibration.36.aspx |
| metadata.dc.relation.ispartof: | Journal of Strength and Conditioning Research |
| Appears in Collections: | Artigo de Periódico |
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