Effects of occupational use of vibrating tools in the autonomic, central and peripheral nervous system.
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. (...)
Mots-clés Pascal : Appareil vibrant, Trouble dû aux vibrations, Exposition professionnelle, Médecine travail, Homme, Système nerveux central, Système nerveux périphérique, Système nerveux autonome, Potentiel évoqué, Electrophysiologie, Conduction nerveuse, Système nerveux pathologie
Mots-clés Pascal anglais : Vibrating apparatus, Vibration induced disorder, Occupational exposure, Occupational medicine, Human, Central nervous system, Peripheral nervous system, Autonomic nervous system, Evoked potential, Electrophysiology, Nerve conduction, Nervous system diseases
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0414276
Code Inist : 002B16B. Création : 19/12/1997.