Lower body acceleration and muscular responses to rotational and vertical whole-body vibration of different frequencies and amplitudes

Journal article


Mileva, K, Zaidell, L, James, DC, Bowtell, J, Pollock, RD, Newham, DJ and Sumners, DP (2019). Lower body acceleration and muscular responses to rotational and vertical whole-body vibration of different frequencies and amplitudes. Dose-Response. 17 (1).
AuthorsMileva, K, Zaidell, L, James, DC, Bowtell, J, Pollock, RD, Newham, DJ and Sumners, DP
Abstract

The aim of this study was to characterise acceleration transmission and neuromuscular responses to rotational (RV) and vertical (VV) vibration of different frequencies and amplitudes.
Methods - 12 healthy males completed 2 experimental trials (RV vs VV) during which vibration was delivered during either squatting (30°; RV vs. VV) or standing (RV only) with 20, 25, 30 Hz, at 1.5 and 3.0 mm peak-to-peak amplitude. Vibration-induced accelerations were assessed with triaxial accelerometers mounted on the platform and bony landmarks at ankle, knee, and lumbar spine.
Results At all frequency/amplitude combinations, accelerations at the ankle were greater during RV (all p < 0.03) with the greatest difference observed at 30 Hz 1.5 mm. Transmission of RV was also influenced by body posture (standing vs. squatting, p < 0.03). Vibration transmission was generally greater at higher amplitudes but not at higher frequencies irrespective of vibration direction.
Conclusions/Implications - The transmission of vibration during WBV is dependent on intensity and direction of vibration as well as body posture. For targeted mechanical loading at the lumbar spine, RV of higher amplitude and lower frequency vibration during standing is recommended. These results will assist with the prescription of WBV to achieve desired levels of mechanical loading at specific sites in the human body.

Year2019
JournalDose-Response
Journal citation17 (1)
PublisherSAGE Publications (UK and US)
ISSN1559-3258
Digital Object Identifier (DOI)doi:https://www.doi.org/10.1177/1559325818819946
Publication dates
Print06 Jan 2019
Publication process dates
Deposited30 Nov 2018
Accepted20 Nov 2018
Accepted author manuscript
License
CC BY-NC-ND 4.0
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https://openresearch.lsbu.ac.uk/item/86813

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