Acute whole-body vibration elicits post-activation potentiation
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Whole-body vibration (WBV) leads to a rapid increase in intra-muscular temperature and enhances muscle power. The power-enhancing effects by WBV can, at least in part, be explained by intra-muscular temperature. However, this does not exclude possible neural effects of WBV occurring at the spinal level. The aim of this study was to examine if muscle twitch and patellar reflex properties were simultaneously potentiated from an acute bout of WBV in a static squat position. Six male and six female athletes performed three interventions for 5 min, static squat with WBV (WBV+, 26 Hz), static squat without WBV (WBV−) and stationary cycling (CYCL, 70 W). Transcutaneous muscle stimulation consisting of a single 200 μs pulse and three patellar tendon taps were administered prior to and then 90 s, 5, 10 min post-intervention. Ninety-seconds after WBV+ muscle twitch peak force (PF) and rate of force development (RFD) were significantly higher (P < 0.01) compared to WBV− and CYCL. However the patellar tendon reflex was not potentiated. An acute continuous bout of WBV caused a post-activation potentiation (PAP) of muscle twitch potentiation (TP) compared to WBV− and CYCL indicating that a greater myogenic response was evident compared to a neural-mediated effect of a reflex potentiation (RP).
KeywordsTwitch Muscle contractile properties Stretch reflex Electrical stimulation Rate of force development
Many thanks to the participants for giving their time and to Matt Barnes, John Pedley and Wayne Salmond for providing great technical advice and support.
- Bazett-Jones DM, Finch HW, Dugan EL (2008) Comparing the effects of various whole-body vibration accelerations on counter-movement jump performance. J Sports Sci Med 7:144–150Google Scholar
- Bosco C, Cardinale M, Tsarpela O, Colli R, Tihanyi J, Duvillard SP, Viru A (1998) The influence of whole body vibration on jumping performance. Biol Sport 15:157–164Google Scholar
- Cochrane DJ, Loram ID, Stannard SR, Rittweger J (2009) Changes in joint angle, muscle–tendon complex length, muscle contractile tissue displacement and modulation of EMG activity during acute whole-body vibration. Muscle Nerve 40:420–429Google Scholar
- Grange RW, Cory CR, Vandenboom R, Houston ME (1995) Myosin phosphorylation augments force–displacement and force–velocity relationships of mouse fast muscle. Am J Physiol Cell Physiol 38:C713–C724Google Scholar
- Guillich A, Schmidtbleicher D (1996) MVC-induced short-term potentiation of explosive force. New Stud Athl 11:67–81Google Scholar
- Hopkins JT, Fredericks D, Guyon PW, Parker S, Gage M, Feland JB, Hunter I (2008) Whole body vibration does not potentiate the stretch reflex. Int J Sports Med 30:124–129Google Scholar
- Moore RL, Stull JT (1984) Myosin light chain phosphorylation in fast and slow skeletal-muscles in situ. Am J Physiol Cell Physiol 247:C462–C471Google Scholar
- Sweeney HL, Bowman BF, Stull JT (1993) Myosin light chain phosphorylation in vertebrate striated muscle: regulation and function. Am J Physiol Cell Physiol 264:C1085–C1095Google Scholar