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Open AccessArticle

Focal Vibration Therapy: Vibration Parameters of Effective Wearable Devices

Department of Rehabilitation Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73117-1222, USA
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Academic Editor: Alberto Doria
Appl. Sci. 2021, 11(7), 2969; https://doi.org/10.3390/app11072969
Received: 3 March 2021 / Revised: 16 March 2021 / Accepted: 21 March 2021 / Published: 26 March 2021
(This article belongs to the Section Acoustics and Vibrations)
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. View Full-Text
Keywords: focal vibration therapy; vibration frequency; vibration amplitude; vibration intensity focal vibration therapy; vibration frequency; vibration amplitude; vibration intensity
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MDPI and ACS Style

Ghazi, M.; Rippetoe, J.; Chandrashekhar, R.; Wang, H. Focal Vibration Therapy: Vibration Parameters of Effective Wearable Devices. Appl. Sci. 2021, 11, 2969. https://doi.org/10.3390/app11072969

AMA Style

Ghazi M, Rippetoe J, Chandrashekhar R, Wang H. Focal Vibration Therapy: Vibration Parameters of Effective Wearable Devices. Applied Sciences. 2021; 11(7):2969. https://doi.org/10.3390/app11072969

Chicago/Turabian Style

Ghazi, Mustafa; Rippetoe, Josiah; Chandrashekhar, Raghuveer; Wang, Hongwu. 2021. "Focal Vibration Therapy: Vibration Parameters of Effective Wearable Devices" Appl. Sci. 11, no. 7: 2969. https://doi.org/10.3390/app11072969

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