title: Hypertrophy and Explosive-Reactive Functioning in Sedentary Men After 10 Weeks of Whole-Body Vibration.
abstract: Ebing, J, Gast, U, Hauptmann, C, Felsenberg, D, and Belavý, DL. Hypertrophy and explosive-reactive functioning in sedentary men after 10 weeks of whole-body vibration. J Strength Cond Res 32(1): 27-36, 2018-The objective of this study was to determine the impact of vertical (Power-plate; POW) and side-alternating (Galileo; GAL) whole-body vibration exercise on muscle mass and lower-limb neuromuscular function. Forty-three sedentary male subjects (18-30 year) randomized into 3 groups underwent 2 upper-body exercise sessions per week for 10 weeks. Two groups of subjects underwent additional squat exercises on the GAL (N = 15) or POW (N = 14) devices. The third group was control. On magnetic resonance imaging, volume of the thigh muscles was measured. Countermovement jump, multiple one-leg hopping, drop jump, landing test, 15-m sprint, and grip strength were performed. Measurements were performed at baseline, and at 5 and 10 weeks. Significantly greater increases in vasti volume were seen in the GAL (+4.15%; p = 0.00076 vs. control) and POW (+4.81%; p = 0.0074 vs. control) groups than in the control group (-1.22%) at 10 weeks. The adductor magnus volume increased in the GAL (+2.24%; p = 0.00038 vs. baseline) and POW (+2.33%; p = 0.00038 vs. baseline) groups at 10 weeks, but this was not significantly different from the control (-0.67%; p = 0.54 vs. baseline). Hamstring volume decreased in GAL (-1.85%; p = 0.00038 vs. baseline) at 5 weeks with the reduction in the POW group at 5 weeks (-1.73%; p = 0.17 vs. baseline) not reaching significance. There were no significant differences between the POW and GAL groups (p ≥ 0.084) and no significant changes in neuromuscular performance. Twice weekly squat exercises with whole-body vibration, progressing from 3- to 5-minute time under tension, lead to thigh muscle hypertrophy but no improvements in explosive-reactive function.
authors.affiliation: University of Applied Sciences of Sport & Management Potsdam, Potsdam, Germany.|Center of Muscle and Bone Research, Charité University Medical School Berlin, Berlin, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Ebing
authors.affiliation: Center of Muscle and Bone Research, Charité University Medical School Berlin, Berlin, Germany.
authors.forename: Ulf
authors.initials: U
authors.lastname: Gast
authors.affiliation: Institute for Sport Science, Berlin, Germany.
authors.forename: Christoph
authors.initials: C
authors.lastname: Hauptmann
authors.affiliation: Center of Muscle and Bone Research, Charité University Medical School Berlin, Berlin, Germany.
authors.forename: Dieter
authors.initials: D
authors.lastname: Felsenberg
authors.affiliation: Center of Muscle and Bone Research, Charité University Medical School Berlin, Berlin, Germany.|Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Burwood, Australia.
authors.forename: Daniel L
authors.initials: DL
authors.lastname: Belavý
mesh_terms: D000293:Adolescent; D000328:Adult; D005081:Exercise Therapy / Q000379:methods*; D006801:Humans; D006984:Hypertrophy / Q000503:physiopathology*; D035002:Lower Extremity / Q000502:physiology; D008297:Male; D009068:Movement; D053580:Muscle Strength / Q000502:physiology; D018482:Muscle, Skeletal / Q000502:physiology*; D057185:Sedentary Behavior; D014732:Vibration; D055815:Young Adult