The influence of a 5-wk whole body vibration on electrophysiological properties of rat hindlimb spinal motoneurons

2013 ◽  
Vol 109 (11) ◽  
pp. 2705-2711 ◽  
Author(s):  
M. Bączyk ◽  
A. Hałuszka ◽  
W. Mrówczyński ◽  
J. Celichowski ◽  
P. Krutki
Keyword(s):  
Whole Body Vibration ◽  
Motor Units ◽  
Membrane Properties ◽  
Whole Body ◽  
Control Group ◽  
Spinal Motoneurons ◽  
Body Vibration ◽  
Electrophysiological Properties ◽  
Male Wistar Rats ◽  
Firing Properties

The study aimed at determining the influence of a whole body vibration (WBV) on electrophysiological properties of spinal motoneurons. The WBV training was performed on adult male Wistar rats, 5 days a week, for 5 wk, and each daily session consisted of four 30-s runs of vibration at 50 Hz. Motoneuron properties were investigated intracellularly during experiments on deeply anesthetized animals. The experimental group subjected to the WBV consisted of seven rats, and the control group of nine rats. The WBV treatment induced no significant changes in the passive membrane properties of motoneurons. However, the WBV-evoked adaptations in excitability and firing properties were observed, and they were limited to fast-type motoneurons. A significant decrease in rheobase current and a decrease in the minimum and the maximum currents required to evoke steady-state firing in motoneurons were revealed. These changes resulted in a leftward shift of the frequency-current relationship, combined with an increase in slope of this curve. The functional relevance of the described adaptive changes is the ability of fast motoneurons of rats subjected to the WBV to produce series of action potentials at higher frequencies in a response to the same intensity of activation. Previous studies proved that WBV induces changes in the contractile parameters predominantly of fast motor units (MUs). The data obtained in our experiment shed a new light to possible explanation of these results, suggesting that neuronal factors also play a substantial role in MU adaptation.

scholarly journals A Comparison of the Effect of Two Types of Whole Body Vibration Platforms on Fibromyalgia. A Randomized Controlled Trial

2021 ◽  
Vol 18 (6) ◽  
pp. 3007
Author(s):  
José Antonio Mingorance ◽  
Pedro Montoya ◽  
José García Vivas Miranda ◽  
Inmaculada Riquelme
Keyword(s):  
Quality Of Life ◽  
Motor Function ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Control Group ◽  
Body Vibration ◽  
Positive Effects ◽  
Therapy Program

Whole body vibration has been proven to improve the health status of patients with fibromyalgia, providing an activation of the neuromuscular spindles, which are responsible for muscle contraction. The present study aimed to compare the effectiveness of two types of whole body vibrating platforms (vertical and rotational) during a 12-week training program. Sixty fibromyalgia patients (90% were women) were randomly assigned to one of the following groups: group A (n = 20), who performed the vibration training with a vertical platform; group B (n = 20), who did rotational platform training; or a control group C (n = 20), who did not do any training. Sensitivity measures (pressure pain and vibration thresholds), quality of life (Quality of Life Index), motor function tasks (Berg Scale, six-minute walking test, isometric back muscle strength), and static and dynamic balance (Romberg test and gait analysis) were assessed before, immediately after, and three months after the therapy program. Although both types of vibration appeared to have beneficial effects with respect to the control group, the training was more effective with the rotational than with vertical platform in some parameters, such as vibration thresholds (p < 0.001), motor function tasks (p < 0.001), mediolateral sway (p < 0.001), and gait speed (p < 0.05). Nevertheless, improvements disappeared in the follow-up in both types of vibration. Our study points out greater benefits with the use of rotational rather than vertical whole body vibration. The use of the rotational modality is recommended in the standard therapy program for patients with fibromyalgia. Due to the fact that the positive effects of both types of vibration disappeared during the follow-up, continuous or intermittent use is recommended.

scholarly journals Effects of whole-body vibration on quadriceps and hamstring muscle strength, endurance, and power in children with hemiparetic cerebral palsy: a randomized controlled study

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Rania G. Hegazy ◽  
Amr Almaz Abdel-aziem ◽  
Eman I. El Hadidy ◽  
Yosra M. Ali
Keyword(s):  
Cerebral Palsy ◽  
Physical Therapy ◽  
Muscle Strength ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Controlled Study ◽  
Control Group ◽  
Hamstring Muscle ◽  
Post Intervention ◽  
Body Vibration

Abstract Background Hemiplegic cerebral palsy (CP) enormously affects the quadriceps and hamstring muscles. It causes weakness in the affected lower-extremity muscles in addition to muscle imbalance and inadequate power production, especially in the ankle plantar-flexor and knee extensor muscles. It also causes anomalous delayed myoelectrical action of the medial hamstring. A whole-body vibration (WBV) exercise can diminish muscle spasticity and improve walking speed, muscle strength, and gross motor function without causing unfavorable impacts in adults suffering from CP. Thus, the aim of this study is to investigate the impacts of WBV training associated with conventional physical therapy on the quadriceps and hamstring muscle strength, endurance, and power in children with hemiparetic CP. Results The post-intervention values of the quadriceps and hamstring muscle force, endurance, and power were significantly higher than the pre-intervention values for both groups (p = 0.001). The post-intervention values of the study group were significantly higher than the control group (quadriceps force, p = 0.015; hamstring force, p = 0.030; endurance, p = 0.025; power, p = 0.014). Conclusion The 8 weeks of WBV training that was added to traditional physical therapy was more successful in improving the quadriceps and hamstring muscle strength, endurance, and power in children with hemiparetic CP when compared to traditional physical therapy alone.

Adaptations in physiological properties of rat motor units following 5 weeks of whole-body vibration

2013 ◽  
Vol 38 (9) ◽  
pp. 913-921 ◽  
Author(s):  
Dawid Łochyński ◽  
Marcin Bączyk ◽  
Dominik Kaczmarek ◽  
Maria Jolanta Rędowicz ◽  
Jan Celichowski ◽  
...  
Keyword(s):  
Myosin Heavy Chain ◽  
Heavy Chain ◽  
Whole Body Vibration ◽  
Motor Units ◽  
Medial Gastrocnemius ◽  
Whole Body ◽  
Force Frequency ◽  
Body Vibration ◽  
Myosin Heavy Chain Isoform ◽  
Twitch Contraction

The purpose of the study was to determine the effects of 5-week whole-body vibration (WBV) on contractile parameters and force–frequency relationship of functionally isolated motor units of the rat medial gastrocnemius muscle: fast fatigable (FF), fast fatigue-resistant (FR), and slow (S). Moreover, myosin heavy chain isoform content was quantified. Following WBV, the maximum tetanic force of FF units was increased by ∼25%. The twitch half-relaxation time in all types of motor units and the twitch contraction time in FR units were shortened. The twitch-to-tetanus force ratio was decreased and the force–frequency curves were shifted rightwards in S and FR units. Myosin heavy chain distribution was not changed. These findings suggest modifications of the excitation–contraction coupling towards shortening of a twitch contraction. The observed increase in force of FF units may contribute to gains in muscle dynamic strength reported following WBV treatment.

scholarly journals Whole-Body Vibration Does Not Seem to Affect Postural Control in Healthy Active Older Women

2018 ◽  
Vol 2018 ◽  
pp. 1-6
Author(s):  
P. S. C. Gomes ◽  
M. O. Campos ◽  
L. F. Oliveira ◽  
R. G. T. Mello ◽  
I. A. Fernandes
Keyword(s):  
Postural Control ◽  
Repeated Measures ◽  
Elderly Women ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Body Sway ◽  
Control Group ◽  
Physically Active ◽  
Body Vibration ◽  
Eyes Closed

Objective. This study investigated the acute residual effects induced by different frequencies of whole-body vibration (WBV) on postural control of elderly women. Design. Thirty physically active elderly women (67±5 years) were randomly divided into three groups: two experimental groups (high WBV frequency: 45 Hz and 4 mm amplitude, n=10; low WBV frequency: 30 Hz and 4 mm amplitude, n=10) and one control group (n=10), with no treatment. The participants were first subjected to stabilometry tests and were then guided through three sets of isometric partial squats for 60 s while the WBV stimulation was applied. The control group was subjected to the same conditions but without the WBV stimulation. The participants were again subjected to body balance tests immediately following the end of the intervention period and again at 8, 16, and 24 min. To measure body sway control, three 60 s tests were performed at 10 s intervals for each of the following experimental conditions: (1) eyes opened and (2) eyes closed. The following variables were investigated: the average velocity of the displacement of the centre of pressure in the anterior-posterior and medial-lateral planes as well as in the elliptical area. Results. A 3 (condition) × 5 (test) two-way repeated-measures ANOVA did not identify significant differences in the stabilometric variables, regardless of group, time, or experimental condition. Conclusions. The effect of WBV, regardless of the stimulation frequency, did not have a significant effect immediately after or up to 24 minutes after vibration cessation, on the variables involved in the control of postural stability in physically active elderly women.

scholarly journals Histological and Radiological Evaluation of Low-Intensity Pulsed Ultrasound Versus Whole Body Vibration on Healing of Mandibular Bone Defects in Rats

Medicina ◽  
2020 ◽  
Vol 56 (9) ◽  
pp. 457
Author(s):  
Milad Etemadi Sh ◽  
Nan-Chen Hsieh ◽  
Seyed Shahin Movahed Mohammadi ◽  
Shahrooz Momeni ◽  
Seyed Mohammad Razavi ◽  
...  
Keyword(s):  
Bone Density ◽  
Whole Body Vibration ◽  
Bone Defects ◽  
Whole Body ◽  
Control Group ◽  
Pulsed Ultrasound ◽  
Mandibular Bone ◽  
Body Vibration ◽  
Low Intensity Pulsed Ultrasound ◽  
Low Intensity

Background and Objectives: Mechanical stimulation can improve the structural properties of the fracture site and induce the differentiation of different cell types for bone regeneration. This study aimed to compare the effect of low-intensity pulsed ultrasound stimulation (LIPUS) versus whole body vibration (WBV) on healing of mandibular bone defects. Materials and Methods: A mandibular defect was created in 66 rats. The rats were randomly divided into two groups of rats. Each group was subdivided randomly by three groups (n = 11) as follows: (I) control group, (II) treatment with LIPUS, and (III) treatment with WBV. The radiographic changes in bone density, the ratio of lamellar bone to the entire bone volume, the ratio of the newly formed bone to the connective tissue and inflammation grade were evaluated after 1 and 2 months. Results: LIPUS significantly increased the radiographic bone density change compared to the control group at the first and second month postoperatively (p < 0.01). WBV only significantly increased the bone density compared to the control group at the second month after the surgery (p < 0.01). Conclusions: Application of LIPUS and WBV may enhance the regeneration of mandibular bone defects in rats. Although LIPUS and WBV are effective in mandibular bone healing, the effects of LIPUS are faster and greater than WBV.

scholarly journals Effects of exercise combined with whole body vibration in patients with patellofemoral pain syndrome: a randomised-controlled clinical trial

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Angel Yañez-Álvarez ◽  
Beatriz Bermúdez-Pulgarín ◽  
Sergio Hernández-Sánchez ◽  
Manuel Albornoz-Cabello
Keyword(s):  
Clinical Trial ◽  
Lower Limb ◽  
Repeated Measures ◽  
Whole Body Vibration ◽  
Patellofemoral Pain ◽  
Whole Body ◽  
Control Group ◽  
Body Vibration ◽  
And Function ◽  
Experimental Group

Abstract Background Patellofemoral pain is a prevalent condition in the general population, especially in women, and produces functional impairment in patients. Therapeutic exercise is considered an essential part of the conservative management. The use of vibration platforms may help improve strength and function and reduce pain in patients with knee disorders. The aim of this investigation was to determine the effects of adding whole body vibration (vertical, vibration frequency of 40 Hz, with an amplitude from 2 to 4 mm) to an exercise protocol for pain and disability in adults with patellofemoral pain. Methods A randomised clinical trial was designed, where 50 subjects were randomly distributed into either an exercise group plus whole body vibration or a control group. Pain, knee function (self-reported questionnaire) and range of motion and lower limb functionality were assessed at baseline and at 4 weeks. The experimental group performed 12 supervised sessions of hip, knee and core strengthening exercises on a vibration platform 3 times per week during 4 weeks. The control group followed the same protocol but without vibration stimuli. Differences in outcome measures were explored using an analysis of the variance of 2 repeated measures. Effect sizes were estimated using Square Eta (η2). Significant level was set al P < 0.05. Results Statistically significant differences were found after intervention in favour of the experimental group in the between-groups comparison and in the interaction of the experimental group before and after treatment in terms of pain perception (P = 0.000; η2 = 0.63) and function outcomes scores (P = 0.000; η2 0.39 and 0.51 for lower limb functional scale and Kujala scores respectively). Conclusion A 4-week whole body vibration exercise programme reduces pain level intensity and improves lower limb functionality in patellofemoral pain patients and is more effective than exercise alone in improving pain and function in the short-term. Trial registration ClinicalTrials.gov (NCT04031248). This study was prospectively registered on the 24th July, 2019.

scholarly journals THE EFFECT OF 8-WEEK WHOLE BODY VIBRATION ON UPPER EXTREMITIES’ STRENGTH PARAMETERS

2021 ◽  
Vol 7 (2) ◽  
Author(s):  
Ntallas Constantinos ◽  
George Dallas
Keyword(s):  
Intervention Program ◽  
Whole Body Vibration ◽  
Random Order ◽  
Upper Extremities ◽  
Whole Body ◽  
Control Group ◽  
Time Interval ◽  
Significant Interaction Effect ◽  
Body Vibration ◽  
Medicine Ball

The purpose of the study was to investigate the effect of an 8-week whole-body vibration intervention program on muscular strength of upper extremities. Twenty-four physical educations participated in this study. Participants were separated in two equal group; the experimental group (EG), and the control group (CG). Before the inception of the intervention program all participants were evaluated with random order in the a) the circumference of each arm, b) the number of push-ups; c) grip strength; d) chest medicine ball throw and immediately after the end of intervention program and two days after. Participants applied a total of 24 sessions, three times per week at the same time of the day. The frequency and amplitude of the vibration platform were 35 Hz and 2 mm, respectively. The intervention program consisted of three different exercises which each had duration of 30 sec. A 30 sec rest was mediated between each trial and a 2 min time interval between exercises in order to avoid the fatigue effect. No significant interaction effect was found for the examined upper extremities variables (p < .05). Furthermore, no significant time and no group effect were found also (p < .05). Paired t-test comparisons revealed significant post differences in comparison to baseline values on medicine ball throw and left arm circumference. According to the results, EG showed a statistically significant improvement in medical ball throw and in left hand circumference, while improvement was also found in the other parameters considered. <p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0795/a.php" alt="Hit counter" /></p>

scholarly journals Composição corporal na síndrome metabólica: Proposta de um protocolo de ensaio clínico randomizado avaliando o efeito do exercício de vibração de corpo inteiro

2019 ◽  
Vol 18 (1) ◽  
pp. 33-40
Author(s):  
Aline S. Reis ◽  
Laisa L. Paineiras-Domingos ◽  
Eloá Moreira-Marconi ◽  
Márcia C. Moura-Fernandes ◽  
Hervé Quinart ◽  
...  
Keyword(s):  
Risk Factors ◽  
Metabolic Syndrome ◽  
Body Composition ◽  
Low Cost ◽  
Whole Body Vibration ◽  
Strong Relationship ◽  
The Body ◽  
Whole Body ◽  
Control Group ◽  
Body Vibration

Introduction: Metabolic syndrome (MetS) is characterized bya group of cardiovascular risk factors, such as hypertension,hyperglycemia, hypercholesterolemia, low high-density cholesteroland increased abdominal fat. Over the years, changesin body composition occur, with accelerated loss of lean massand increased fat mass, favoring cardiometabolic disorders.A strong relationship exists between physical inactivity andthe presence of multiple risk factors for MetS. Thus, physicalexercise has been recommended for the prevention of cardiovascular,chronic and MetS diseases. Whole-body vibration(WBV) exercise can be considered to be an exercise modalitythat benefits the muscular strength and cardiovascular healthof elderly, sick and healthy people. Individuals with MetSare unmotivated to perform physical exercise regularly and,therefore, new approaches to intervention for this populationare desirable. Objectives: The aim of this study is to presenta protocol to verify the effect of WBV exercise on the bodycomposition of MetS individuals. Methods: Randomized controlledtrial with MetS individuals that will be allocated to anintervention group (WBVG) and a control group (CG). Participantswill be placed barefoot on the base of a side alternatingvibrating platform, with 130º knee flexion. Individuals (WBVGand CG) will perform the protocol for 12 weeks, twice a week.The CG subjects will perform the exercises at 5Hz throughoutthe intervention and those from the WBVG will perform the5Hz exercises in the first session, adding 1Hz per session, endingthe protocol at 16Hz. The body composition will be evaluatedbefore and after the protocol using bioelectrical impedanceanalysis. Discussion: Studies involving WBV exercise haveshown improvement in composition in individuals withdifferent conditions (healthy and unhealthy). Conclusion: Theproposed protocol will permit the acquisition of findings thatwill be relevant in the evaluation of the effect of the WBV onthe body composition of MetS individuals due to its ease ofrealization, low cost and safety.Keywords: Whole body vibration exercise; Metabolic syndrome;Physical activity.

scholarly journals MON-624 Effect of Whole Body Vibration on Glycemic Control in Adults with Type 2 Diabetes

2020 ◽  
Vol 4 (Supplement_1) ◽  
Author(s):  
Manuela de Lucca Michels ◽  
Ana Clara d’Acampora ◽  
Camila Sartor Spivakoski ◽  
Priscila Nobre Dantas Mattje ◽  
Bruna da Silva Réus ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Glycemic Control ◽  
Glycated Hemoglobin ◽  
Fasting Blood Glucose ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Control Group ◽  
Body Vibration ◽  
Number Of Patients

Abstract Introduction: Physical activity plays an important role in glycemic control in patients with type 2 diabetes, but overall adherence rate is low. For patients not able or willing to engage in regular physical exercise, whole body vibration comes as a potential alternative. Objective: To evaluate the effect of 28Hz whole body mechanical vibration on glycemic control and other metabolic parameters in patients with type 2 diabetes. Methods: 24 adults with type 2 diabetes on oral antidiabetic agents, with a baseline HbA1c between 6.5 and 9.0%, were randomized into two groups. The control group (CG) was advised to adopt lifestyle modifications, and the intervention group (IG) received the same orientations and used a 28 Hz whole body vibrating platform daily for 20-30 minutes during 12 weeks. Results: Data from 22 patients were analyzed (one from each group was excluded). Baseline characteristics of both groups were similar except for triglycerides, which were higher in the CG (111.8±39.9 mg/dL vs. 188.9±68.8 mg/dL, p&lt;0.05). After 12 weeks, there was a significant reduction in glycated hemoglobin in the IG (7.69±0.49 vs. 7.17±0.77%, p&lt;0.05), not observed in the CG (8.05±0.98 vs. 7.92±1.07%, p=0.52). A non-significant trend for weight loss in IG was observed (78.14±10.47 vs. 77.14±11.08Kg, p=0.069). There were no significant differences between the groups regarding fasting blood glucose or any other clinical and biochemical variables analyzed. Conclusion: This study suggests an improvement in glycated hemoglobin at 12 weeks with the use of the 28Hz vibration platform in patients with type 2 diabetes. However, further studies with a larger number of patients and longer follow-up are needed to better define the role of whole body vibration as an adjuvant in glycemic control.

scholarly journals Insidious Cerebral Capillary Trauma from Motor Vehicle-Induced Vibration

2017 ◽  
pp. 1-7
Author(s):  
Prabhjot Grewal ◽  
Samita Goyal ◽  
Magdelana Matloub ◽  
FengYi Shen ◽  
Lin-ling Zhang ◽  
...  
Keyword(s):  
Motor Vehicle ◽  
Neuronal Damage ◽  
Whole Body Vibration ◽  
Cerebral Injury ◽  
Whole Body ◽  
Control Group ◽  
Sprague Dawley ◽  
Body Vibration ◽  
Human Apolipoprotein ◽  
Cerebral Capillary

Cumulative cerebral injury from motor vehicle-induced whole body vibration has not been demonstrated thus far. Our lab has demonstrated isolated cerebral injury from whole body vibration and we believe that repetitive vibration can cause cumulative insults, impairing cerebral function. A simulated motor vehicle-induced whole body vibration study was conducted with fifty-six Sprague-Dawley rats divided into seven groups (N=8): (1) 8-week control group; (2) 8-week vibration group (exposed to whole body vibration at 30 Hz and 0.5g acceleration for 4 hours/day, 5 days/week for 8 weeks); (3) 8-week vibration group with preconditioning human apolipoprotein A-I molecule mimetic (4F); (4) 8-week vibration group with post conditioning 4F peptide; (5) 8-week vibration group with pre and post conditioning 4F peptide; (6) 12-week control group; and (7) 12-week vibration group (exposed to the same vibration, 5 days/week for 12 weeks). At the end point, all rats were evaluated by brain histo-pathological studies. The pathology demonstrated capillary constriction with surrounding edema as well as thickened, uneven and damaged capillary walls. Capillary constriction reduces the oxygen supply to cerebral neurons, leading to neuronal damage. In the 12-week vibration group, each effect was more pronounced as compared to the 8-week vibration group. There was no prominent cerebral capillary damage in the 4F-peptide conditioning groups. This study showed cumulative cerebral injury from motor vehicle-induced whole body vibration and demonstrated the preventative effect of 4F-peptide conditioning.

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