2024-03-29T07:55:25Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00014157
2023-11-16T06:23:27Z
499:508:509:1376
VIBRATION-INDUCED WHITE FINGER AS A RISK FACTOR FOR HEARING LOSS AND POSTURAL INSTABILITY
IKI, MASAYUKI
open access
Combined effects
Noise-induced hearing loss
Postural stability
Posturography
Raynaud's phenomenon
Vibration-induced white finger
Effect of vibration-induced white finger (VWF) on the hearing was examined in 289 Japanese forest workers. From 51 subjects suffering from VWF and 228 with no history of VWF, 37 pairs were formed, matched for age and hours of noise exposure. The cases with VWF had a significantly higher hearing threshold at 4 and 8 kHz than their matched controls. This result was corroborated by the follow-up study which showed significant deterioration of hearing at 2 and 4 kHz only in subjects with VWF during five-year follow- up period. The possible effects of VWF on the postural stability were investigated in 71 Finnish forest workers. Postural stability was evaluated by an average velocity of the body-sway (ASV) measured with a force platform technique. Neither age nor exposure duration to chain saw noise and vibration correlated with ASV. A significant positive correlation was found between ASV and hearing level at 4 kHz after allowing for the effects of the exposure. Multiple regression analysis of ASV on age, exposure hours, hearing level at 4 kHz and prevalence of VWF showed that the hearing level and VWF had significant and almost significant effects on ASV, respectively. Thus, the workers suffering from VWF developed greater hearing loss and the hearing loss correlated with ASV. VWF explained some variance of ASV in the regression analysis. VWF seemed to play some role in hearing deterioration and possibly in genesis of balance disorder.
Nagoya University School of Medicine
1994-05
eng
departmental bulletin paper
VoR
https://doi.org/10.18999/nagjms.57.suppl.137
http://hdl.handle.net/2237/16062
https://nagoya.repo.nii.ac.jp/records/14157
10.18999/nagjms.57.suppl.137
http://www.med.nagoya-u.ac.jp/medlib/nagoya_j_med_sci/57suppl/57suppl.html
2186-3326
0027-7622
Nagoya Journal of Medical Science
57
suppl
137
145
https://nagoya.repo.nii.ac.jp/record/14157/files/v57supp137_145.pdf
application/pdf
560.0 kB
2018-02-20