Is vibration truly an injurious stimulus in the human spine?

Hill, Taryn E.; Desmoulin, Geoffrey T.; Hunter, Christopher

doi:10.1016/j.jbiomech.2009.10.001

Cited by 53 publications

(33 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Over half (69%) of military helicopter pilots exposed to WBV report pain with the frequency of symptoms correlated with the length of exposure [24,59]. Because the greatest injury risk exists at resonance [36], studies have defined the resonant frequency of many species, including humans (approximately 4 Hz) [11,63], Rhesus monkey (5-14 Hz) [72], and rabbit (4.5 Hz) [80]. Although several rat models have examined pain induction and maintenance after either vibration of isolated limbs or WBV [3,4,11,19,26,43], the vibration response, and its relevance to injury, in the rat is unknown.…”

Section: Introductionmentioning

confidence: 99%

Whole-body Vibration at Thoracic Resonance Induces Sustained Pain and Widespread Cervical Neuroinflammation in the Rat

Zeeman

Kartha

Jaumard

et al. 2015

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

Background Whole-body vibration (WBV) is associated with back and neck pain in military personnel and civilians. However, the role of vibration frequency and the physiological mechanisms involved in pain symptoms are unknown. Questions/purposes This study asked the following questions: (1) What is the resonance frequency of the rat spine for WBV along the spinal axis, and how does frequency of WBV alter the extent of spinal compression/ extension? (2) Does a single WBV exposure at resonance induce pain that is sustained? (3) Does WBV at resonance alter the protein kinase C epsilon (PKCe) response in the dorsal root ganglia (DRG)? (4) Does WBV at resonance alter expression of calcitonin gene-related peptide (CGRP) in the spinal dorsal horn? (5) Does WBV at resonance alter the spinal neuroimmune responses that regulate pain? Methods Resonance of the rat (410 ± 34 g, n = 9) was measured by imposing WBV at frequencies from 3 to 15 Hz. Separate groups (317 ± 20 g, n = 10/treatment) underwent WBV at resonance (8 Hz) or at a nonresonant frequency (15 Hz). Behavioral sensitivity was assessed throughout to measure pain, and PKCe in the DRG was quantified as well as spinal CGRP, glial activation, and cytokine levels at Day 14. Results Accelerometer-based thoracic transmissibility peaks at 8 Hz (1.86 ± 0.19) and 9 Hz (1.95 ± 0.19, mean difference [MD] 0.290 ± 0.266, p \ 0.03), whereas the video-based thoracic transmissibility peaks at 8 Hz (1.90 ± 0.27), 9 Hz (2.07 ± 0.20), and 10 Hz (1.80 ± 0.25, MD 0.359 ± 0.284, p \ 0.01). WBV at 8 Hz produces more cervical extension (0.745 ± 0.582 mm, MD 0.242 ± 0.214, p \ 0.03) and compression (0.870 ± 0.676 mm, MD 0.326 ± 0.261, p \ 0.02) than 15 Hz (extension, 0.503 ± 0.279 mm; compression, 0.544 ± 0.400 mm). Pain is longer lasting (through Day 14) and more robust (p \ 0.01) after WBV at the resonant frequency (8 Hz) compared with 15 Hz WBV. PKCe in the nociceptors of the DRG increases according to the severity of WBV with greatest increases after 8 Hz WBV (p \ 0.03). However, spinal CGRP, cytokines, and glial activation are only evident after painful WBV at resonance. Conclusions WBV at resonance produces long-lasting pain and widespread activation of a host of nociceptive and neuroimmune responses as compared with WBV at a nonresonance condition. Based on this work, future investigations into the temporal and regional neuroimmune response to resonant WBV in both genders would be useful.

show abstract

Section: Introductionmentioning

confidence: 99%

Whole-body Vibration at Thoracic Resonance Induces Sustained Pain and Widespread Cervical Neuroinflammation in the Rat

Zeeman

Kartha

Jaumard

et al. 2015

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

show abstract

“…Considering that the damping effects of soft tissue are quite relevant (about 20 percent), but observing that the presence of damping does not influence the values of the modal frequencies in a considerable way as suggested by some authors [2][3][4][5][6][7][8][9][10][11][12][13][14][15], modal frequencies and shapes can be computed by solving the classical eigenvalues problem…”

Section: Evaluation Of Modal Frequenciesmentioning

confidence: 99%

“…When a human body is shaken, vibration may cause negative effects as annoyance, discomfort, interference with activities, impaired health or motion sickness [1][2][3][4][5]. The long-term exposure to vibration may mine the safety leading to irreparable physiological or perception damages.…”

Section: Introductionmentioning

confidence: 99%

Modeling human spine using dynamic spline approach for vibrational simulation

Valentini¹

2012

Journal of Sound and Vibration

View full text Add to dashboard Cite

“…Because vibration exposure occurs in many occupational and recreational activities (such as sitting and driving), many studies have been conducted to determine its health consequences [4][5][6][7]. Vibration exposure that occurs while the whole body is supported by a vibrating surface, referred to as whole-body vibration (WBV), has been found to have an effect on humans' health, activities, and comfort [8].…”

Section: Introductionmentioning

confidence: 99%

GDynamic stiffness and transmissibility of commercially available wheelchair cushions using a laboratory test method

Garcia-Mendez¹,

Pearlman²,

Cooper³

et al. 2012

JRRD

View full text Add to dashboard Cite

Abstract-Evidence suggests that wheelchair (WC) users are exposed to unhealthy levels of vibration during WC use. Health risks associated with vibration exposure include vertebral disc degeneration and back pain, which may consequently decrease the function and independence of WC users. Some evidence suggests that the cushions used in WCs may amplify vibrations, although conclusive evidence has not been presented in the literature. This study evaluated and compared the transmissibility of commercially available WC cushions with two laboratory test methods: (1) direct measurement of transmissibility while human subjects propelled a WC over a road course with different cushions and (2) characterization of cushions with a material testing system (MTS) combined with mathematical models of the apparent mass of the human body. Results showed that although dynamic characterization of WC cushions is possible with an MTS, the results did not correlate well with the transmissibility obtained in the WC road course. Significant differences were found for transmissibility among the cushions tested, with the air-based cushions having lower transmissibility than the foam-or gel-based cushions.

show abstract

Is vibration truly an injurious stimulus in the human spine?

Cited by 53 publications

References 37 publications

Whole-body Vibration at Thoracic Resonance Induces Sustained Pain and Widespread Cervical Neuroinflammation in the Rat

Whole-body Vibration at Thoracic Resonance Induces Sustained Pain and Widespread Cervical Neuroinflammation in the Rat

Modeling human spine using dynamic spline approach for vibrational simulation

GDynamic stiffness and transmissibility of commercially available wheelchair cushions using a laboratory test method

Contact Info

Product

Resources

About