A longitudinal study of peripheral sensory function in vibration-exposed workers

Bovenzi, Massimo; Ronchese, F; Mauro, Marcella

doi:10.1007/s00420-010-0549-8

Cited by 18 publications

(19 citation statements)

References 28 publications

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“…The present findings, which suggest that a doseresponse relationship exists, match the results of similar previous longitudinal studies showing evidence for a dose-response relationship between HAV exposure and neurological (sensorineural) impairment of the hand (4,20,21). However, this relationship has been unclear and has not yet been fully established (3).…”

Section: Edlund Et Alsupporting

confidence: 88%

A prospective cohort study investigating an exposure–response relationship among vibration-exposed male workers with numbness of the hands

Edlund¹,

Burström²,

Gerhardsson³

et al. 2013

Scand J Work Environ Health

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A prospective cohort study investigating an exposure-response relationship among vibration-exposed male workers with numbness of the hands by Edlund M, Burström L, Gerhardsson L, Lundström R, Nilsson T, Sandén H, Hagberg M This study on hand-arm-vibration (HAV) exposed workers spanned 16 years; exposure dose was assessed for each individual; and the study may contribute to knowledge about an exposure-response relationship between neurological symptoms and HAV exposure. Furthermore, to our knowledge, there are no other studies reporting incidence of numbness in hands among HAV-exposed workers or how it affects work performance. Affiliation 203Original article Scand J Work Environ Health. 2014;40(2):203-209. doi:10.5271/sjweh.3386 A prospective cohort study investigating an exposure-response relationship among vibration-exposed male workers with numbness of the hands Objective The aim of this study was to investigate the exposure-response relationship of hand-arm vibration (HAV) exposure to neurological symptoms (numbness) of the hand in a cohort of vibration-exposed workers. MethodsThe baseline cohort comprised 241 office and manual workers with and without exposure to HAV.Numbness (the symptom or event) in the hand was assessed for all subjects at baseline and follow-ups after 5, 10, and 16 years. The workers were stratified into quartiles with no exposure in the first quartile and increasing intensity of exposure in quartiles 2-4 (groups 1-3). Data analysis was performed using survival analysis (time-to-event). Information on cumulative exposure and years of exposure to event was collected via questionnaires. Measurements were performed in accordance with the International Organization for Standardization (ISO) 5349-1. ResultsThe hazard ratio (HR) of risk of event (numbness) differed statistically significantly between the nonexposed group (group 0) and the two higher exposure groups (groups 2 and 3). There was also a significant ratio difference between the lowest exposure group (group 1) and the two higher groups. The ratio for group 1 was 1.77 [95% confidence interval (95% CI) 0.96-3.26] compared with 3.78 (95% CI 2.15-6.62) and 5.31 (95% CI 3.06-9.20) for groups 2 and 3, respectively. ConclusionThe results suggest a dose-response relationship between vibration exposure and numbness of the hands. This underlines the importance of keeping vibration levels low to prevent neurological injury to the hands.

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Section: Edlund Et Alsupporting

confidence: 88%

A prospective cohort study investigating an exposure–response relationship among vibration-exposed male workers with numbness of the hands

Edlund¹,

Burström²,

Gerhardsson³

et al. 2013

Scand J Work Environ Health

View full text Add to dashboard Cite

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“…Furthermore, they may increase their risk of injury when handling objects, in addition to their usual occupation activities (30).…”

Section: Discussionmentioning

confidence: 99%

“…The PTD who has a sedentary lifestyle and finds himself exposed to high levels of WBV associated with the density and intensity of working hours, may increase the damage to his health, once he is at the limit required for systemic functioning (30). Such factors predispose the PTD to health problems such as MSD affecting his overall physical ability, with consequent impairment in the production process and impact on the healthcare system.…”

Section: Final Considerationsmentioning

confidence: 99%

Whole-body vibration and musculoskeletal diseases in professional truck drivers

et al. 2016

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Background: Most occupational diseases do not fit the paradigm of medical interpretation of the health-disease process based on linear causality, in which it would be possible to find a single cause for each type of disease. Objectives: to conduct a systematic review in order to investigate the association between wholebody vibration (WBV) and musculoskeletal disorders (MSD) in professional truck drivers (PTD). Methods: The scientific databases of PubMed, Cochrane, Lilacs and Scielo were used to collect articles published from 2000 until the present time. Two independent reviewers adopted inclusion and quality criteria to evaluate the selected articles. Results: From adopted inclusion and quality criteria, nine articles were chosen to identify the association between MSD and WBV in PTD. The results showed that MSD seems to be closely associated to exposure to WBV in these workers, mainly due to high prevalence and symptoms of low back pain. Two cohort studies showed exposure to WBV as risk for MSD. Only one, with case-control design, did not show WBV as a

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“…Sinusoidal vibrations at two frequencies (31.5 and 125 Hz) were automatically delivered and transmitted to the finger pulp by a vibration probe (diameter 4 mm) protruding through a circular hole in a rigid plate. These frequencies were chosen to cover the response of Meissner’s corpuscles and Pacini’s corpuscles, respectively [6]. The forearm and the wrist of the participant were supported and the test did not start until the skin temperature of the subject’s forefingers exceeded + 28°C.…”

Section: Methodsmentioning

confidence: 99%

Quantitative neurosensory findings, symptoms and signs in young vibration exposed workers

Gerhardsson

Burström

Hagberg

et al. 2013

Journal of Occupational Medicine and Toxicology

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BackgroundLong-term exposure to hand-held vibrating tools may cause the hand arm vibration syndrome (HAVS) including vibration induced white fingers and sensorineural symptoms. The aim was to study early neurosensory effects by quantitative vibrotactile and monofilament tests in young workers with hand-held vibration exposure.MethodsThis cross-sectional study consisted of 142 young, male machine shop and construction workers with hand-held exposure to vibrating tools. They were compared with 41 non-vibration exposed subjects of the same age-group. All participants passed a structured interview, answered several questionnaires and had a physical examination including the determination of vibrotactile perception thresholds (VPTs) at two frequencies (31.5 and 125 Hz) and Semmes Weinstein’s Monofilament test.ResultsIn the vibration exposed group 8% of the workers reported episodes of tingling sensations and 10% numbness in their fingers. Approximately 5–10% of the exposed population displayed abnormal results on monofilament tests. The vibrotactile testing showed significantly increased VPTs for 125 Hz in dig II bilaterally (right hand, p = 0.01; left hand, p = 0.024) in the vibration exposed group.A multiple regression analysis (VPT - dependent variable; age, height, examiner and five different vibration dose calculations – predictor variables) in dig II bilaterally showed rather low R2-values. None of the explanatory variables including five separately calculated vibration doses were included in the models, neither for the total vibration exposed group, nor for the highest exposed quartile.A logistic multiple regression analysis (result of monofilament testing - dependent variable; age, height, examiner and five vibration dose calculations – predictor variables) of the results of monofilament testing in dig II bilaterally gave a similar outcome. None of the independent variables including five calculated vibration doses were included in the models neither for the total exposed group nor for the highest exposed quartile.ConclusionIn spite of the fairly short vibration exposure, a tendency to raised VPTs as well as pathologic monofilament test results was observed. Thus, early neurophysiologic symptoms and signs of vibration exposure may appear after short-term exposure also in young workers.

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A longitudinal study of peripheral sensory function in vibration-exposed workers

Abstract: The findings of this longitudinal study suggest a significant exposure-response relationship between thermal sensory impairment over time and measures of vibration exposure. The measurement of TPT may be a useful testing method to assess vibration-induced neuropathy at an early stage.

Cited by 18 publications

References 28 publications

A prospective cohort study investigating an exposure–response relationship among vibration-exposed male workers with numbness of the hands

A prospective cohort study investigating an exposure–response relationship among vibration-exposed male workers with numbness of the hands

Whole-body vibration and musculoskeletal diseases in professional truck drivers

Quantitative neurosensory findings, symptoms and signs in young vibration exposed workers

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