Vibration Training Improves Balance in Unstable Ankles

Background: Ankle sprains often result in ankle instability, which is most likely caused by damage to passive structures and neuromuscular impairment. Whole body vibration (WBV) is a neuromuscular training method improving those impaired neurologic parameters. The aim of this study is to compare the current gold standard functional treatment to functional treatment plus WBV in patients with acute unilateral unstable inversion ankle sprains. Methods/Design: 60 patients, aged 18-40 years, presenting with an isolated, unilateral, acute unstable inversion ankle sprain will be included in this bicentric, biphasic, randomized controlled trial. Samples will be randomized by envelope drawing. All patients will be allowed early mobilization and pain-dependent weight bearing, limited functional immobilization by orthosis, PRICE, NSARDs as well as home and supervised physiotherapy. Supervised physical therapy will take place twice a week, for 30 minutes for a period of 6 weeks, following a standardized intervention protocol. During supervised physical therapy, the intervention group will perform exercises similar to those of the control group, on a side-alternating sinusoidal vibration platform. Two time-dependent primary outcome parameters will be assessed: short-term outcome after six weeks will be postural control quantified by the sway index; mid-term outcome after one year will be assessed by subjective instability, defined by the presence of giving-way attacks. Secondary outcome parameters include: return to pre-injury level of activities, residual pain, recurrence, objective instability, energy/ coordination, Foot and Ankle Disability Index and EQ 5D.

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“…Therefore sample size was chosen according to previous studies on WBV or ankle instability [32,49,61,62]. …”

Section: Methodsmentioning

confidence: 99%

“…Cloak at al. [49] conducted a randomized controlled trial (RCT) on functional ankle instability in dancers (n=38), comparing WBV to a control group (regular dance training). The WBV group yielded significantly better results for balance (STAR extrusion balance test) as well as a significantly reduced Center of Pressure values.…”

Section: Introductionmentioning

confidence: 99%

Study protocol: the effect of whole body vibration on acute unilateral unstable lateral ankle sprain- a biphasic randomized controlled trial

Baumbach

Fasser

Polzer

et al. 2013

BMC Musculoskelet Disord

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“…In that same study, proprioceptive function (the threshold to detection of passive movement) improved in persons who exercised on an unstable vibration platform in comparison with those who did not exercise, whereas a significant effect on proprioception was not detected in the group that exercised on a stable vibration platform. These findings suggest that exercise on a vibrating platform may be a well‐tolerated and effective means of strengthening the quadriceps and may contribute to improved sensory function [10‐12,14,15]. However, further study is needed in which WBV exercise is compared with the same exercise on a nonvibrating platform to determine the effects that are attributable to WBV compared with those attributable to the exercise program.…”

Section: Introductionmentioning

confidence: 99%

Vibration Platform Training in Women at Risk for Symptomatic Knee Osteoarthritis

Segal

Glass

Shakoor

et al. 2012

PM&R

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Objective To determine whether a platform exercise program with vibration is more effective than the platform exercise alone for improving lower limb muscle strength and power in women age 45-60 with risk factors for knee osteoarthritis (OA). Design Randomized, controlled study Setting Academic center Participants 48 women age 45-60 years old with risk factors for knee OA (history of knee injury or surgery or BMI≥25kg/m2). Interventions Subjects were randomized to a twice weekly lower limb exercise program (quarter squat, posterolateral leg lifts, calf raises) on either a vertically vibrating (35Hz, 2mm), or a non-vibrating platform. Main Outcome Measurements The main outcome measures included change in isokinetic quadriceps strength, leg press power, and stair climb power by 12 weeks. Results 39 out of 48 enrolled participants completed the study (26 vibration and 13 control exercise). Nine participants discontinued the study after randomization mainly due to lack of time. There were no intergroup differences in age, BMI, or activity level. Isokinetic knee extensor strength did not significantly improve in either group. Leg press power improved by 92.0±69.7 W in the vibration group (p<.0001) and 58.2±96.2 W in the control group (p=0.0499), but did not differ between groups (p=0.2262). Stair climb power improved by 53.4±64.7 W in the vibration group (p=0.0004) and 55.7±83.3 W in the control group (p=0.0329), but did not differ between groups (p=0.9272). Conclusions Whole body vibration platforms have been marketed for increasing strength and power. In this group of asymptomatic middle-aged women with risk factors for knee OA, addition of vibration to a 12-week exercise program did not result in significantly greater improvement in lower limb strength or power than participation in the exercise program without vibration.

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“…1,2 Researchers have demonstrated that WBV can improve aspects of physical performance, such as strength [3][4][5] and flexibility, 6,7 whereas evidence regarding the physiologic changes associated with therapeutic WBV remains unclear. [8][9][10][11][12] The influence of WBV on peripheral blood flow and muscle oxygen use is of special interest, as these measures provide insight into the metabolic changes occurring in skeletal muscle.…”

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confidence: 99%

Whole-Body Vibration and Blood Flow and Muscle Oxygenation: A Meta-Analysis

Games

Sefton²,

Wilson

2015

Journal of Athletic Training

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Context:The use and popularity of whole-body vibration (WBV) has increased in recent years, but there is a lack of consensus in the literature about the effectiveness of the treatment.Objective: To quantitatively examine the effects of WBV on muscle oxygenation and peripheral blood flow in healthy adults.Data Sources: We searched Web of Science and PubMed databases and reference lists from relevant articles using the key terms whole body vibration, whole-body vibration, WBV, blood flow, peripheral blood flow, oxygenation, muscle oxygenation, circulation, circulatory, near infrared spectroscopy, NIRS, and power Doppler. Key terms were searched using single word and combination searches. No date range was specified.Study Selection: Criteria for inclusion were (1) use of a commercially available WBV device, (2) a human research model, (3) a pre-WBV condition and at least 1 WBV experimental condition, and (4) reporting of unstandardized means and standard deviations of muscle oxygenation or peripheral blood flow.Data Extraction: Means, standard deviations, and sample sizes were extracted from the text, tables, and figures of included studies. A total of 35 and 90 data points were extracted for the muscle-oxygenation and blood-flow meta-analyses, respectively. Data for each meta-analysis were combined and analyzed using meta-analysis software. Weighted, randomeffects meta-analyses using the Hedges g metric were completed for muscle oxygenation and blood flow. We then conducted follow-up analyses using the moderator variables of vibration type, vibration time, vibration frequency, measurement location, and sample type.Data Synthesis: We found 18 potential articles. Further examination yielded 10 studies meeting the inclusion criteria. Whole-body vibration was shown to positively influence peripheral blood flow. Additionally, the moderators of vibration type and frequency altered the influence of WBV on blood flow. Overall, WBV did not alter muscle oxygenation; however, when the measurement site was considered, muscle oxygenation increased or decreased depending on the location.Conclusions: Acute bouts of WBV increase peripheral blood flow but do not alter skeletal muscle oxygenation. Vibration type appears to be the most important factor influencing both muscle oxygenation and peripheral blood flow. Key Words: interventions, modalities, circulatory system Key PointsAn acute bout of therapeutic whole-body vibration (WBV) increases peripheral blood flow but does not alter muscleoxygenation levels. Vibration type and frequency affect peripheral blood flow and muscle oxygenation during an acute bout of WBV. Additional work examining the effects of WBV on circulatory measures in injured populations is needed. Although WBV is promising when used in healthy people, clinicians should be cautious in applying WBV as a therapeutic modality to improve vascular measures after injury or illness.O ver the past decade, the incorporation of wholebody vibration (WBV) into fitness and injury treatment programs has expanded rapidly.1,2 R...

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Vibration Training Improves Balance in Unstable Ankles

Cited by 37 publications

References 56 publications

Study protocol: the effect of whole body vibration on acute unilateral unstable lateral ankle sprain- a biphasic randomized controlled trial

Study protocol: the effect of whole body vibration on acute unilateral unstable lateral ankle sprain- a biphasic randomized controlled trial

Vibration Platform Training in Women at Risk for Symptomatic Knee Osteoarthritis

Whole-Body Vibration and Blood Flow and Muscle Oxygenation: A Meta-Analysis

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