title: Whole-body vibration applied during upper body exercise improves performance.
abstract: Whole-body vibration (WBV) training has exercisers perform static and dynamic resistance training exercises on a ground-based platform. Exposure to WBV exposure has demonstrated benefits and no effect on lower body strength, power, and performance. The aim of this study was to determine if WBV exposure (50 Hz, 2.51 mm) has any potentiating effects postexercise by measuring the kinematic variables of a set of upper body elbow-extensor exercise (70% one-repetition maximum [1RM]) to volitional exhaustion. Sixteen recreationally active students (12 male and 4 female) performed 3 different experimental conditions on separate days. Each condition had the subjects perform 1 set of elbow-extension exercise to fatigue with 1 of 3 WBV treatments: WBV simultaneously during the set (AE); 60 seconds after application of WBV for 30 seconds (RE); and no WBV (CTRL). Kinematic parameters of each repetition were monitored by linking a rotary encoder to the highest load plate. The mean velocity and acceleration throughout the set and perceived exertion were analyzed. A significant increase (p < 0.05) was observed in the mean velocity for the whole set in the AE condition vs. the CTRL condition. The mean acceleration was significantly higher (p < 0.05) in the AE condition in comparison with RE (increased by 45.3%) and CTRL (increased by 50.4%) conditions. The positive effect induced by WBV on upper-limb performance is only achieved when the stimulus is applied during the exercise. However, WBV applied 60 seconds before upper body exercise results in no benefit.
authors.affiliation: Laboratory of Physiology, European University Miguel de Cervantes, Valladolid, Spain. pjmarin@uemc.es
authors.forename: Pedro J
authors.initials: PJ
authors.lastname: Marín
authors.forename: Azael J
authors.initials: AJ
authors.lastname: Herrero
authors.forename: John G
authors.initials: JG
authors.lastname: Milton
authors.forename: Tom J
authors.initials: TJ
authors.lastname: Hazell
authors.forename: David
authors.initials: D
authors.lastname: García-López
mesh_terms: D000054:Acceleration; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D008297:Male; D053580:Muscle Strength / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology; D055070:Resistance Training / Q000379:methods*; D034941:Upper Extremity / Q000502:physiology*; D014732:Vibration; D055815:Young Adult