Electromyographic response of vastus lateralis, vastus medialis and rectus femoris muscles during anaerobic intermittent effort in cyclists
DOI:
https://doi.org/10.5016/293Keywords:
Eletromiografia, esforço intermitente, teste de Wingate, ciclistas.Abstract
The purpose of the present study was to investigate the neuromuscular recruitment characteristics of vastus lateralis (VL), vastus medialis (VM), and rectus femoris (RF) during anaerobic intermittent effort in cyclists and the relationships between electromyographic signal of muscles and physical performance. Nine males cyclists (age 18-30 years) performed three Wingate Test (W1, W2, and W3) on a cycle ergometer with two minutes of rest between each exercise bout. Relative mean power (RMP), root mean square amplitude (EMG-RMS), and median frequency (Fourier Transform) were recorded throughout the cycling. RMP decreased significantly between W1 and W3 by 27%. EMG-RMS decrease was slightly more pronounced for RF (13%) than VL and VM (6%). The different EMG-RMS fatigue patterns between the VL, VM, and RF may be explained by morphological, architecture, and biomechanical factors. We concluded that EMG-RMS fatigue patterns were different between the VL, VM, and RF. MPO and EMG-RMS declined during high intensity exercise but not in the same proportion. Further investigation is required to measure both metabolite accumulation and changes in neural firing patterns during high intensity intermittent effort.Downloads
Published
Issue
Section
License
Authors who publish in this journal agree to the following terms:
a) The authors assign copyright to the magazine, with the work simultaneously licensed under the Creative Commons Attribution License, which allows the work to be shared with recognition of its authorship and publication in this magazine.
b) The policy adopted by the Editorial Committee is to assign copyright only after a period of 30 months from the date of publication of the article. After this time, authors interested in publishing the same text in another work must send a letter to the Editorial Committee requesting permission to transfer copyright and await a response.
c) This magazine provides public access to all its content, as this allows greater visibility and reach of published articles and reviews. For more information about this approach, visit the Public Knowledge Project, a project that developed this system to improve the academic and public quality of research, distributing OJS as well as other software to support the public access publishing system for academic sources. The names and email addresses on this site will be used exclusively for the purposes of the magazine and will not be available for other purposes. This journal provides open any other party This work is licensed under a Creative Commons License