Int J Sports Med. 2011 Oct;32(10):781-7. doi: 10.1055/s-0031-1277215. Epub 2011 Aug 25
Combined Effects of Whole-Body Vibration, Resistance Exercise, and Vascular Occlusion on Skeletal Muscle and Performance
Item 1 , 2 , J. Denkinger 1 , P. Fontana 1 , 3 , M. Weber 4 , U. Boutellier 1 , 2 , M. Toigo 1 , 2 , 3
- Exercise Physiology, Institute of Human Movement Sciences and Sport, ETH Zurich, Switzerland
- Institute of Physiology and Zurich Center for Integrative Human Physiology, University of Zurich, Switzerland
- Exersciences gmbh, Zurich, Switzerland
- Department of Visceral and Transplantation Surgery, University Hospital Zurich, Switzerland
Purpose: The purpose of this study was to evaluate the effects of a new high-intensity training modality comprised of vibration exercise with superimposed resistance exercise and vascular occlusion (vibroX) on skeletal muscle and performance.
Method: Young untrained women were randomized to either train in a progressive mode on 3 days per week for 5 weeks ( n = 12) or to maintain a sedentary lifestyle ( n = 9).
Results: VibroX increased peak cycling power ( + 9 % , P = 0.001), endurance capacity ( + 57 %, P = 0.002), ventilatory threshold ( + 12 % , P < 0.001), and end-test torque( + 15 % , P = 0.002) relative to the sedentary group. Training load increased by 84.5 % ( P < 0.001) after vibroX. The increases were paralleled by increases in myosin heavy chain type 1 vastus lateralis muscle fiber cross-sectional area ( + 14 %, P = 0.031) and proportion ( + 17 % , P = 0.015), thigh lean mass ( + 4 % , P = 0.001), capillary-to fiber ratio ( + 14 % , P = 0.003), and cytochrome c oxidase activity. Conversely, maximal values for oxygen consumption, cardiac output, isokinetic leg extension power and jumping power remained unaffected. Notably, vastus lateralis muscle adaptations were achieved with a very low weekly training volume.
Conclusion: We conclude that vibroX quickly increases muscle (fi ber) size, capillarization, and oxidative potential, and markedly augments endurance capacity in young women.