Nerve damage occurs at a wide range of vibration frequencies

Govindaraju, Sandya; Curry, Brian; Bain, James L. W.; Riley, Denise

doi:10.1016/j.ergon.2007.10.008

Cited by 16 publications

(22 citation statements)

References 18 publications

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“…Thus, neurophysiological research has shown that the cutaneous receptors responsible for tactile sense and precise motor control of the hand respond to signals with a wide range of frequencies which overlap each other. Moreover, animal experiments have demonstrated that in a rat-tail vibration model nerve damage (intraneural edema, disrupted myelinated axons) occurs at a wide range of vibration frequencies from 30-800 Hz (32).…”

Section: Alternative Frequency Weightings Of Vibration For Neurosensomentioning

confidence: 99%

“…Upon consideration that HTV from power tools determines psychophysical and physiological responses over a wide range of frequencies (33), it is hard to believe that a single frequency weighting is appropriate to predict the overall sensory response to vibration among humans. Since long-term exposure to vibration from power tools can lead to permanent impairment of tactile sensitivity [due to either anatomical loss of sensory afferents (32) or depression of the excitability of all types of tactile units (34)], on a clinical level, a comprehensive battery of quantitative sensory tests -and not a single test -is recommended to assess and quantify the overall sensory function among patients affected with neuropathies or at risk of developing neurological disorders (35).…”

Section: Alternative Frequency Weightings Of Vibration For Neurosensomentioning

confidence: 99%

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Relationships of neurosensory disorders and reduced work ability to alternative frequency weightings of hand-transmitted vibration

Bovenzi¹,

Prodi²,

Mauro³

2015

Scand J Work Environ Health

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Section: Alternative Frequency Weightings Of Vibration For Neurosensomentioning

confidence: 99%

Section: Alternative Frequency Weightings Of Vibration For Neurosensomentioning

confidence: 99%

Relationships of neurosensory disorders and reduced work ability to alternative frequency weightings of hand-transmitted vibration

Bovenzi¹,

Prodi²,

Mauro³

2015

Scand J Work Environ Health

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“…Several studies conducted mostly in the industrial field show that vibration exposure can cause both acute and chronic injury to a range of physiological systems such as the musculoskeletal, circulatory, and nervous systems (Griffin, 1996). These injuries include back pain, cartilage damage, nerve damage (Govindaraju, Curry, Bain, & Riley, 2008), brain damage, blurred vision (Costa, Arezes, & Melo, 2014), hearing loss (Iki et al, 1987), or low back pain (Boshuizen, Bongers, & Hulshof, 1990;Dupuis & Zerlett, 1987). Not enough is known about the long-term effects of exposure to vibratory platforms.…”

Section: Introductionmentioning

confidence: 99%

Transmission of whole body vibration to the lower body in static and dynamic half-squat exercises

Múnera

Bertucci

Duc

et al. 2016

Sports Biomechanics

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Whole body vibration (WBV) is used as a training method but its physical risk is not yet clear. Hence, the aim of this study is to assess the exposure to WBV by a measure of acceleration at the lower limb under dynamic and static postural conditions. The hypothesis of this paper is that this assessment is influenced by the frequency, position, and movement of the body. Fifteen healthy males are exposed to vertical sinusoidal vibration at different frequencies (20-60 Hz), while adopting three different static postures (knee extension angle: 180°, 120° and 90°) or performing a dynamic half-squat exercise. Accelerations at input source and at three joints of the lower limb (ankle, knee, and hip) are measured using skin-mounted accelerometers. Acceleration values (g) in static conditions show a decrease in the vibrational dose when it is measured at a more proximal location in the lower extremity. The results of the performed statistical test show statistically significant differences (p < 0.05) in the transmissibility values caused by the frequency, the position, and to the presence of the movement and its direction at the different conditions. The results confirm the initial hypothesis and justify the importance of a vibration assessment in dynamic conditions.

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“…The models have included both single and repeated exposures of the fore and hind limbs of rats, mice or rabbits, or tails of rats to vibration using frequencies ranging from 30–1000 Hz with accelerations of approximately 2–7 g [15–18]. These studies have demonstrated that the morphological and physiological effects of both acute and repetitive vibration on these systems are similar to the effects seen in humans [13–20].…”

Section: Effects Of Segmental Vibration On Physiology: Evidence Frmentioning

confidence: 99%

Vibration induced white-feet: Overview and field study of vibration exposure and reported symptoms in workers

Eger

Thompson

Leduc

et al. 2014

Work

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BACKGROUND Workers who stand on platforms or equipment that vibrate are exposed to foot-transmitted vibration (FTV). Exposure to FTV can lead to vibration white feet/toes resulting in blanching of the toes, and tingling and numbness in the feet and toes. OBJECTIVES The objectives are 1) to review the current state of knowledge of the health risks associated with foot-transmitted vibration (FTV), and 2) to identify the characteristics of FTV and discuss the associated risk of vibration-induced injury. PARTICIPANTS Workers who operated locomotives (n = 3), bolting platforms (n = 10), jumbo drills (n = 7), raise drilling platforms (n = 4), and crushers (n = 3), participated. METHODS A tri-axial accelerometer was used to measure FTV in accordance with ISO 2631-1 guidelines. Frequency-weighted root-mean-square acceleration and the dominant frequency are reported. Participants were also asked to report pain/ache/discomfort in the hands and/or feet. RESULTS Reports of pain/discomfort/ache were highest in raise platform workers and jumbo drill operators who were exposed to FTV in the 40 Hz and 28 Hz range respectively. Reports of discomfort/ache/pain were lowest in the locomotive and crusher operators who were exposed to FTV below 10 Hz. These findings are consistent with animal studies that have shown vascular and neural damage in exposed appendages occurs at frequencies above 40 Hz. CONCLUSIONS Operators exposed to FTV at 40 Hz appear to be at greater risk of experiencing vibration induced injury. Future research is required to document the characteristics of FTV and epidemiological evidence is required to link exposure with injury.

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Nerve damage occurs at a wide range of vibration frequencies

Cited by 16 publications

References 18 publications

Relationships of neurosensory disorders and reduced work ability to alternative frequency weightings of hand-transmitted vibration

Relationships of neurosensory disorders and reduced work ability to alternative frequency weightings of hand-transmitted vibration

Transmission of whole body vibration to the lower body in static and dynamic half-squat exercises

Vibration induced white-feet: Overview and field study of vibration exposure and reported symptoms in workers

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