Individual Responses to Different Vibration Frequencies Identified by Electromyography and Dynamometry in Different Types of Vibration Application
| Autor: | Bruno Pena Couto, Mariana Paulino Oliveira, Guilherme Menezes Lage, Darryl J. Cochrane, Marcos Daniel Motta Drummond, Carlo Demicheli, Hans Joachim Menzel |
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| Rok vydání: | 2019 |
| Předmět: |
Adult
Male medicine.medical_specialty Strength training Physical Therapy Sports Therapy and Rehabilitation Electromyography 030204 cardiovascular system & hematology Vibration Vibratory stimulus 03 medical and health sciences Young Adult 0302 clinical medicine Physical medicine and rehabilitation Mechanical vibration medicine Humans Orthopedics and Sports Medicine Muscle Strength Muscle Skeletal Physical Therapy Modalities medicine.diagnostic_test business.industry 030229 sport sciences General Medicine Neuromuscular training Muscle strength Vibration exposure business |
| Zdroj: | Journal of strength and conditioning research. 35(6) |
| ISSN: | 1533-4287 1748-1759 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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