Effects of occupational use of vibrating tools in the autonomic, central and peripheral nervous system
| Autor: | Katsuyuki Murata, Shunichi Araki, Mutsuhiro Nakao, Chiaki Matsunaga, Kaname Suwa, Fumika Okajima |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Adult
Central Nervous System Male genetic structures Matched-Pair Analysis Central nervous system Neural Conduction Autonomic Nervous System Somatosensory system Vibration Statistics Nonparametric Electrocardiography Evoked Potentials Somatosensory Occupational Exposure Peripheral Nervous System Humans Medicine Evoked potential business.industry Public Health Environmental and Occupational Health Anatomy Middle Aged Peripheral Occupational Diseases Autonomic nervous system medicine.anatomical_structure Case-Control Studies Peripheral nervous system Occupational exposure business Nerve conduction Neuroscience |
| Zdroj: | International Archives of Occupational and Environmental Health. 70:94-100 |
| ISSN: | 1432-1246 0340-0131 |
| DOI: | 10.1007/s004200050192 |
| Popis: | The objective of this study was to clarify the autonomic, central and peripheral nervous effects of vibrating-tool operation.The ECG R-R interval variability (CVRR), including the C-CVHF, C-CVLF (two component CVs of the CVRR reflecting parasympathetic and sympathetic activities, respectively) and the power spectral densities (PSDHF and PSDLF) after autoregressive analysis, short-latency somatosensory evoked potentials (SSEP), distribution of nerve conduction velocities (DCV), and median and radial nerve conduction velocities (NCVs) were measured in 17 vibrating-tool operators and the same number of age-matched control subjects. Some of the operators complained of white finger even in summer as soon as they arrived at the cold workplace.The significance of the differences in neurophysiological data between the exposed and unexposed groups and the associations between these data in the former were investigated.The CVRR, C-CVHF and PSDHF were significantly lower in the vibrating-tool operators than in the matched controls. The N9-N13 interpeak latency of the SSEP, i.e., conduction time of the cervico-spinobulbar pathway, in the operators was significantly prolonged as compared with the controls; the faster velocities of the DCV and the NCVs were significantly slowed in the operators. The N9-N13 interpeak latency in the operators was significantly correlated with the C-CVHF.Complex stressors of local vibration, cold, noise and heavy work, seem to affect the cervico-spinobulbar, parasympathetic and peripheral nerve functions. Also, parasympathetic hypofunction may imply a consequence in brainstem pathology induced by cold exposure in addition to vibration. |
| Databáze: | OpenAIRE |
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