Title: Whole-body-vibration-induced increase in leg muscle activity during different squat exercises
Authors: Roelants, Machteld ×
Verschueren, Sabine
Delecluse, Christophe
Levin, Oron
Stijnen, Valère #
Issue Date: Feb-2006
Series Title: Journal of strength and conditioning research / National Strength & Conditioning Association vol:20 issue:1 pages:124-129
Abstract: This study analyzed leg muscle activity during whole-body vibration (WBV) training. Subjects performed standard unloaded isometric exercises on a vibrating platform (Power Plate): high squat (HS), low squat (LS), and 1-legged squat (OL). Muscle activity of the rectus femoris, vastus lateralis, vastus medialis, and gastrocnemius was recorded in 15 men (age 21.2 +/- 0.8 years) through use of surface electromyography (EMG). The exercises were performed in 2 conditions: with WBV and without (control [CO]) a vibratory stimulus of 35 Hz. Muscle activation during WBV was compared with CO and with muscle activation during isolated maximal voluntary contractions (MVCs). Whole-body vibration resulted in a significantly higher (p < 0.05) EMG root-mean-square compared with CO in all muscle groups and all exercises (between +39.9 +/- 17.5% and +360.6 +/- 57.5%). The increase in muscle activity caused by WBV was significantly higher (p < 0.05) in OL compared with HS and LS. In conclusion, WBV resulted in an increased activation of the leg muscles. During WBV, leg muscle activity varied between 12.6 and 82.4% of MVC values.
ISSN: 1064-8011
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Kinesiology - miscellaneous
Department of Rehabilitation Sciences - miscellaneous
Movement Control & Neuroplasticity Research Group
Exercise Physiology Research Group
Research Group for Musculoskeletal Rehabilitation
× corresponding author
# (joint) last author

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