2016 journal article

Whole-Body and Local Muscle Vibration Immediately Improve Quadriceps Function in Individuals With Anterior Cruciate Ligament Reconstruction

ARCHIVES OF PHYSICAL MEDICINE AND REHABILITATION, 97(7), 1121–1129.

By: D. Pamukoff *, B. Pietrosimone *, M. Lewek *, E. Ryan*, P. Weinhold n, D. Lee*, J. Blackburn *

author keywords: Knee; Muscles; Osteoarthritis; Rehabilitation; Resistance training
MeSH headings : Anterior Cruciate Ligament Reconstruction / rehabilitation; Cross-Over Studies; Evoked Potentials, Motor; Female; Humans; Isometric Contraction / physiology; Knee Joint / physiopathology; Male; Muscle Strength / physiology; Physical Therapy Modalities; Quadriceps Muscle / physiopathology; Single-Blind Method; Torque; Vibration / therapeutic use; Young Adult
TL;DR: WBV and LMV acutely improved quadriceps function and could be useful modalities for restoring quadricePS strength in individuals with knee pathologies. (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

{"Label"=>"OBJECTIVE"} To determine the immediate effects of a single session of whole-body vibration (WBV) and local muscle vibration (LMV) on quadriceps function in individuals with anterior cruciate ligament reconstruction (ACLR). {"Label"=>"DESIGN"} Singe-blind, randomized crossover trial. {"Label"=>"SETTING"} Research laboratory. {"Label"=>"PARTICIPANTS"} Population-based sample of individuals with ACLR (N=20; mean age ± SD, 21.1±1.2y; mean mass ± SD, 68.3±14.9kg; mean time ± SD since ACLR, 50.7±21.3mo; 14 women; 16 patellar tendon autografts, 3 hamstring autografts, 1 allograft). {"Label"=>"INTERVENTIONS"} Participants performed isometric squats while being exposed to WBV, LMV, or no vibration (control). Interventions were delivered in a randomized order during separate visits separated by 1 week. {"Label"=>"MAIN OUTCOME MEASURES"} Quadriceps active motor threshold (AMT), motor-evoked potential (MEP) amplitude, Hoffmann reflex (H-reflex) amplitude, peak torque (PT), rate of torque development (RTD), electromyographic amplitude, and central activation ratio (CAR) were assessed before and immediately after a WBV, LMV, or control intervention. {"Label"=>"RESULTS"} There was an increase in CAR (+4.9%, P=.001) and electromyographic amplitude (+16.2%, P=.002), and a reduction in AMT (-3.1%, P<.001) after WBV, and an increase in CAR (+2.7%, P=.001) and a reduction in AMT (-2.9%, P<.001) after LMV. No effect was observed after WBV or LMV in H-reflex, RTD, or MEP amplitude. AMT (-3.7%, P<.001), CAR (+5.7%, P=.005), PT (+.31Nm/kg, P=.004), and electromyographic amplitude (P=.002) in the WBV condition differed from the control condition postapplication. AMT (-3.0% P=.002), CAR (+3.6%, P=.005), and PT (+.30Nm/kg, P=.002) in the LMV condition differed from the control condition postapplication. No differences were observed between WBV and LMV postapplication in any measurement. {"Label"=>"CONCLUSIONS"} WBV and LMV acutely improved quadriceps function and could be useful modalities for restoring quadriceps strength in individuals with knee pathologies.