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Med Sci Sports Exerc., 2007; 39(9): 1642-50, PMID: 17805098

Variation in neuromuscular responses during acute whole-body vibration exercise

Year: 2007

Abercromby AF, Amonette WE, Layne CS, McFarlin BK, Hinman MR, Paloski WH
Wyle Laboratories, Inc., Houston, TX 77058, USA.


PURPOSE: Leg muscle strength and power are increased after whole-body vibration (WBV) exercise. These effects may result from increased neuromuscular activation during WBV; however, previous studies of neuromuscular responses during WBV have not accounted for motion artifact. METHODS: Sixteen healthy adults performed a series of static and dynamic unloaded squats with and without two different directions of WBV (rotational vibration, RV; and vertical vibration, VV; 30 Hz; 4 mmp-p). Activation of unilateral vastus lateralis, biceps femoris, gastrocnemius, and tibialis anterior was recorded using EMG. During RV and VV, increases in EMG relative to baseline were compared over a range of knee angles, contraction types (concentric, eccentric, isometric), and squatting types (static, dynamic). RESULTS: After removing large, vibration-induced artifacts from EMG data using digital band-stop filters, neuromuscular activation of all four muscles increased significantly (P
GID: 305; Last update: 17.12.2007