Author: Riccardo Di Giminiani1, Nadia Rucci1, Lorenzo Capuano1, Marco Ponzetti1, Federica Aielli2, Jozsef Tihanyi3
Affiliation: <sup>1</sup> Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, Italy.
<sup>2</sup> Oncological Unit, G Mazzini Hospital, Teramo, Italy.
<sup>3</sup> Department of Biomechanics, University of Physical Education, Budapest, Hungary.
Conference/Journal: Dose Response
Date published: 2020 June 29
Other:
Volume ID: 18 , Issue ID: 2 , Pages: 1559325820931262 , Special Notes: doi: 10.1177/1559325820931262. , Word Count: 214
Objective. We aimed to investigate the acute residual hormonal, biochemical, and neuromuscular responses to a single session of individualized whole-body vibration (WBV) while maintaining a half-squat position. Methods. Twenty male sport science students voluntarily participated in the present study and were randomly assigned to an individualized WBV group (with the acceleration load determined for each participant) or an isometric group (ISOM). A double-blind, controlled parallel study design with repeated measures was employed. Results. Testosterone and growth hormone increased significantly over time in the WBV group (P < .05 and P < .01, respectively; effect size [ES] ranged from 1.00 to 1.23), whereas cortisol increased over time in both groups (P < .01; ES ranged from 1.04 and 1.36). Interleukin-6 and creatine kinase increased significantly over time only in the WBV group (P < .05; ES = 1.07). The maximal voluntary contraction decreased significantly over time in the ISOM group (P = .019; ES = 0.42), whereas in the WBV group, the decrease did not reach a significant level (P = .05). The ratio of electromyographic activity and power decreased significantly over time in the WBV group (P < .01; ES ranged from 0.57 to 0.72). Conclusion. Individualized WBV increased serum hormonal concentrations, muscle damage, and inflammation to levels similar to those induced by resistance training and hypertrophy exercises.
KEYWORDS: EMG activity; maximal isometric voluntary contraction; muscle efficiency; power; vibration.
PMID: 32647498 PMCID: PMC7328225 DOI: 10.1177/1559325820931262