Effect of Whole-Body Vibration on the Functional Responses of the Patients with Knee Osteoarthritis by the Electromyographic Profile of the Vastus Lateralis Muscles during the Five-Repetition Chair Stand Test: A Randomized Crossover Trial

Knee osteoarthritis (KOA) can cause functional disability. Neuromuscular function is relevant in the development and progression of KOA. It can be evaluated by the analysis of the surface electromyography (sEMG), which has an important role in the understanding of KOA. Whole-body vibration (WBV) is an intervention suggested to treat KOA. The objective of this work was to verify the effectiveness of WBV on the functionality of lower limbs by the electromyographic profile of the vastus lateralis (VL) muscles during the five-repetition chair stand test (5CST) in patients with KOA. This was a two-period crossover trial study (8-week washout). Nineteen patients with KOA were allocated to the group submitted to WBV (WBVG), with peak-to-peak displacement of 2.5 to 7.5 mm, frequency from 5 to 14 Hz, and acceleration peak from 0.12 to 2.95 g, or to the control group (0 Hz) (2 days per week for 5 weeks). The 5CST and the sEMG of the VL during 5CST were evaluated before and after the interventions. Results: Significant differences in 5CST were evident only in WBVG (p = 0.018), showing a decrease of the execution time. The sEMG profile showed no significative difference. Therefore, only 10 sessions of WBV with comfortable posture can bring about improvement in functionality of KOA patients without alteration of the muscle excitation.

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Effects of Passive Whole-Body Vibration and Auriculotherapy on the Surface Electromyographic Pattern of the Vastus Lateralis Right Muscle in Individuals with Knee Osteoarthritis

Advances in Intelligent Systems and Computing - Human Interaction and Emerging Technologies ◽

10.1007/978-3-030-25629-6_104 ◽

2019 ◽

pp. 665-671

Author(s):

Eloá Moreira-Marconi ◽

Adriana Lírio ◽

Marcia Cristina Moura-Fernandes ◽

Alexandre Meirelles ◽

Tânia Lemos Santos ◽

...

Keyword(s):

Knee Osteoarthritis ◽

Vastus Lateralis ◽

Whole Body Vibration ◽

Whole Body ◽

Body Vibration

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Pulsed Electromagnetic Field Versus Whole Body Vibration on Cartilage and Subchondral Trabecular Bone in Mice With Knee Osteoarthritis

Bioelectromagnetics ◽

10.1002/bem.22263 ◽

2020 ◽

Vol 41 (4) ◽

pp. 298-307

Author(s):

Wenwen Ye ◽

Hua Guo ◽

Xiaotian Yang ◽

Lin Yang ◽

Chengqi He

Keyword(s):

Electromagnetic Field ◽

Knee Osteoarthritis ◽

Trabecular Bone ◽

Whole Body Vibration ◽

Whole Body ◽

Pulsed Electromagnetic Field ◽

Body Vibration ◽

Field Versus ◽

Pulsed Electromagnetic

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Effects of different vibration frequencies, amplitudes and contraction levels on lower limb muscles during graded isometric contractions superimposed on whole body vibration stimulation

Journal of Rehabilitation and Assistive Technologies Engineering ◽

10.1177/2055668319827466 ◽

2019 ◽

Vol 6 ◽

pp. 205566831982746 ◽

Cited By ~ 1

Author(s):

Amit N Pujari ◽

Richard D Neilson ◽

Marco Cardinale

Keyword(s):

Isometric Contraction ◽

Vastus Lateralis ◽

Whole Body Vibration ◽

Biceps Femoris ◽

Whole Body ◽

Isometric Contractions ◽

Electromyographic Activity ◽

Mean Square ◽

Body Vibration ◽

Neuromuscular Activity

Background Indirect vibration stimulation, i.e., whole body vibration or upper limb vibration, has been investigated increasingly as an exercise intervention for rehabilitation applications. However, there is a lack of evidence regarding the effects of graded isometric contractions superimposed on whole body vibration stimulation. Hence, the objective of this study was to quantify and analyse the effects of variations in the vibration parameters and contraction levels on the neuromuscular responses to isometric exercise superimposed on whole body vibration stimulation. Methods In this study, we assessed the ‘neuromuscular effects’ of graded isometric contractions, of 20%, 40%, 60%, 80% and 100% of maximum voluntary contraction, superimposed on whole body vibration stimulation (V) and control (C), i.e., no-vibration in 12 healthy volunteers. Vibration stimuli tested were 30 Hz and 50 Hz frequencies and 0.5 mm and 1.5 mm amplitude. Surface electromyographic activity of the vastus lateralis, vastus medialis and biceps femoris were measured during V and C conditions with electromyographic root mean square and electromyographic mean frequency values used to quantify muscle activity and their fatigue levels, respectively. Results Both the prime mover (vastus lateralis) and the antagonist (biceps femoris) displayed significantly higher (P < 0.05) electromyographic activity with the V than the C condition with varying percentage increases in EMG root-mean-square (EMGrms) values ranging from 20% to 200%. For both the vastus lateralis and biceps femoris, the increase in mean EMGrms values depended on the frequency, amplitude and muscle contraction level with 50 Hz–0.5 mm stimulation inducing the largest neuromuscular activity. Conclusions These results show that the isometric contraction superimposed on vibration stimulation leads to higher neuromuscular activity compared to isometric contraction alone in the lower limbs. The combination of the vibration frequency with the amplitude and the muscle tension together grades the final neuromuscular output.

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Whole-body vibration modulates leg muscle reflex and blood perfusion among people with chronic stroke: a randomized controlled crossover trial

Scientific Reports ◽

10.1038/s41598-020-58479-5 ◽

2020 ◽

Vol 10 (1) ◽

Cited By ~ 1

Author(s):

Meizhen Huang ◽

Tiev Miller ◽

Michael Ying ◽

Marco Y. C. Pang

Keyword(s):

Crossover Trial ◽

Whole Body Vibration ◽

Blood Perfusion ◽

Chronic Stroke ◽

Whole Body ◽

Body Vibration ◽

Randomized Controlled ◽

Leg Muscle ◽

Muscle Reflex

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Effect of the Combined Intervention with Passive Whole-Body Vibration and Auriculotherapy on the Quality of Life of Individuals with Knee Osteoarthritis Assessed by the WHOQOL-Bref: A Multi-Arm Clinical Trial

Applied Sciences ◽

10.3390/app10061956 ◽

2020 ◽

Vol 10 (6) ◽

pp. 1956 ◽

Cited By ~ 1

Author(s):

Marcia Cristina Moura-Fernandes ◽

Eloá Moreira-Marconi ◽

Alexandre Gonçalves de Meirelles ◽

Ana Paula Ferreira de Oliveira ◽

Aline Reis Silva ◽

...

Keyword(s):

Quality Of Life ◽

Knee Osteoarthritis ◽

Whole Body Vibration ◽

Whole Body ◽

Pharmacological Interventions ◽

Control Groups ◽

Peak Displacement ◽

Body Vibration ◽

Combined Intervention

The aim of this study was to determine the effect on the quality of life of two non-pharmacological interventions isolated or in combination: (i) passive whole-body vibration exercise (WBVE), and (ii) auriculotherapy (AT). One hundred three participants with knee osteoarthritis (KOA) were allocated to: (a) a vibration group (WBVEG; n = 17) that performed WBVE (peak-to-peak displacement: 2.5 to 7.5 mm, frequency: 5 to 14 Hz, Peak acceleration: 0.12 to 2.95 g), two days/weekly for five weeks, (b) an AT group (ATG; n = 21), stimulation of three specific auriculotherapy points (Kidney, Knee and Shenmen) in each ear pavilion, (c) WBVE + AT (WBVE + AT; n = 20) and (d) respective control groups (WBVE_CG, n = 15; AT_CG, n = 12; WBVE + AT_CG, n = 18). The participants filled out the WHOQOL-bref Questionnaire before the first and after the last sessions. Statistical differences in the various domains of the WHOQOL-bref were not found. In conclusion, WBVE or AT alone or combined did not contribute in altering the quality of life of individuals exposed to these interventions.

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