Focal Muscle Vibration for Stroke Rehabilitation: A Review of Vibration Parameters and Protocols

Wang, Hongwu; Chandrashekhar, Raghuveer; Rippetoe, Josiah; Ghazi, Mustafa

doi:10.3390/app10228270

Cited by 12 publications

(14 citation statements)

References 79 publications

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“…In the future, we will include more devices based on different features and designs. We will also try to include the non-portable devices that have been tested in another study to compare the performance differences among them [15]. Second, the accelerometer used in the present study was not optimized (barely adequate for the device frequency measured).…”

Section: Discussionmentioning

confidence: 99%

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Focal Vibration Therapy: Vibration Parameters of Effective Wearable Devices

et al. 2021

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Focal vibration therapy can provide neurophysiological benefits. Unfortunately, standardized protocols are non-existent. Previous research presents a wide range of protocols with a wide range of effectiveness. This paper is part of a broader effort to identify effective, standardized protocols for focal vibration therapy. In this study, the authors evaluated the vibration characteristics (frequency and peak-to-peak intensity) of four commercially available focal vibration devices: (1) Vibracool (wearable), (2) Novafon (hand-held), (3) Myovolt 3-actuator (wearable), and (4) Myovolt 2-actuator (wearable). An accelerometer was used for the measurements. Measurements were made under the following two conditions: (a) when the devices were free, i.e., unconstrained vibration, and (b) when the devices were strapped to the human body, i.e., constrained vibration. In the free vibration condition, frequency ranged from 120 to 225 Hz and peak-to-peak amplitude ranged from 2.0 to 7.9 g’s. When the devices were strapped to the body (constrained), vibration amplitude decreased by up to 65.7%. These results identify effective ranges of focal vibration frequency and amplitude. They illustrate the importance of identifying vibration environment, free or constrained, when quoting vibration characteristics. Finally, the inconsistency output of multi-actuator devices is discussed. These results will guide protocol development for focal vibration and potentially better focal vibration devices.

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Section: Discussionmentioning

confidence: 99%

“…There is a lack of standardized application protocols for FV [15][16][17]. Different studies have used various combinations of vibration frequencies, amplitudes/intensities, and dosages as an intervention, but the reported values correspond to the vibration characteristics in the free vibration condition.…”

Section: Introductionmentioning

confidence: 99%

Focal Vibration Therapy: Vibration Parameters of Effective Wearable Devices

et al. 2021

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“…In comparison with NMES, FVS applied to a target muscle is more acceptable for stroke survivors because mainly the mechanoreceptors in the skin and muscles are activated during stimulation without wide recruitment of other sensory receptors (e.g., nociceptors, as in NMES) [ 12 , 15 ]. FVS can activate primary afferent endings (i.e., Ia afferents) in a muscle through mechanical deformation of the muscle spindles [ 16 ], which can increase muscular proprioception and suppress antagonist co-contraction [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Immediate Neuromodulatory Effects between Focal Vibratory and Electrical Sensory Stimulations after Stroke

Lin,

Qing,

Huang

et al. 2024

Bioengineering

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Focal vibratory stimulation (FVS) and neuromuscular electrical stimulation (NMES) are promising technologies for sensory rehabilitation after stroke. However, the differences between these techniques in immediate neuromodulatory effects on the poststroke cortex are not yet fully understood. In this research, cortical responses in persons with chronic stroke (n = 15) and unimpaired controls (n = 15) were measured by whole-brain electroencephalography (EEG) when FVS and NMES at different intensities were applied transcutaneously to the forearm muscles. Both FVS and sensory-level NMES induced alpha and beta oscillations in the sensorimotor cortex after stroke, significantly exceeding baseline levels (p < 0.05). These oscillations exhibited bilateral sensory deficiency, early adaptation, and contralesional compensation compared to the control group. FVS resulted in a significantly faster P300 response (p < 0.05) and higher theta oscillation (p < 0.05) compared to NMES. The beta desynchronization over the contralesional frontal–parietal area remained during NMES (p > 0.05), but it was significantly weakened during FVS (p < 0.05) after stroke. The results indicated that both FVS and NMES effectively activated the sensorimotor cortex after stroke. However, FVS was particularly effective in eliciting transient involuntary attention, while NMES primarily fostered the cortical responses of the targeted muscles in the contralesional motor cortex.

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“…In recent years, the use of prolonged (i.e., from a few min to 60 min) local vibration (LV) has emerged as a new rehabilitation method ( Alashram et al, 2019 ; Wang et al, 2020 ; Avvantaggiato et al, 2021 ). LV applied to a muscle or its tendon produces repetitive changes in muscle length, inducing in turn muscle spindle Ia afferents discharge ( Burke et al, 1976a ) that project at both spinal and cortical levels, with the potential for both acute and chronic neuromuscular adaptations ( Souron et al, 2017a ).…”

Section: Introductionmentioning

confidence: 99%

Effects of prolonged local vibration superimposed to muscle contraction on motoneuronal and cortical excitability

et al. 2023

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Introduction: Acute effects of prolonged local vibration (LV) at the central nervous system level have been well investigated demonstrating an altered motoneuronal excitability with a concomitant increase in cortical excitability. While applying LV during isometric voluntary contraction is thought to optimize the effects of LV, this has never been addressed considering the acute changes in central nervous system excitability.Materials and Methods: In the present study, nineteen healthy participants were engaged in four randomized sessions. LV was applied for 30 min to the relaxed flexor carpi radialis muscle (VIBRELAXED) or during wrist flexions (i.e. intermittent contractions at 10% of the maximal voluntary contraction: 15 s ON and 15 s OFF; VIBCONTRACT). A control condition and a condition where participants only performed repeated low-contractions at 10% maximal force (CONTRACT) were also performed. For each condition, motor evoked potentials (MEPs) elicited by transcranial magnetic stimulation and cervicomedullary evoked potentials (CMEPs) elicited by corticospinal tract electrical stimulation were measured before (PRE) and immediately after prolonged LV (POST) to investigate motoneuronal and corticospinal excitability, respectively. We further calculated the MEP/CMEP ratio as a proxy of cortical excitability.Results: No changes were observed in the control nor CONTRACT condition. At POST, CMEP decreased similarly in VIBRELAXED (−32% ± 42%, p < .001) and VIBCONTRACT (−41% ± 32%, p < .001). MEP/CMEP increased by 110% ± 140% (p = .01) for VIBRELAXED and by 120% ± 208% (p = .02) for VIBCONTRACT without differences between those conditions.Discussion: Our results suggest that LV to the flexor carpi radialis muscle, either relaxed or contracted, acutely decreases motoneuronal excitability and induces some priming of cortical excitability.

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Focal Muscle Vibration for Stroke Rehabilitation: A Review of Vibration Parameters and Protocols

Cited by 12 publications

References 79 publications

Focal Vibration Therapy: Vibration Parameters of Effective Wearable Devices

Focal Vibration Therapy: Vibration Parameters of Effective Wearable Devices

Comparison of Immediate Neuromodulatory Effects between Focal Vibratory and Electrical Sensory Stimulations after Stroke

Effects of prolonged local vibration superimposed to muscle contraction on motoneuronal and cortical excitability

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