The aim of the present study was to non-invasively assess autonomic nervous activity, using time-and frequency-domain analyses of heart rate variation (HRV), and to investigate the relationship between indices of HRV and duration of exposure to vibration (DEV), time since retirement from work involving vibration (TR) and time undergoing treatment (TT) in a group of patients with hand-arm vibration syndrome (HAVS).
Twenty one HAVS patients who were no longer exposed to vibration and were undergoing standard treatment for HAVS, and 10 healthy control subjects, similar to the patients in age, height, weight and number of current smokers and drinkers, volunteered for this study.
Indices of HRV [time-domain indices (the mean of R-R intervals, standard deviation and coefficient of variation) and normalized units of frequency-domain indices [low frequency (LF) and high frequency (HF) components], indicating parasympathetic nervous activity, were calculated from 2 min electrocardiographic data recorded during spontaneous breathing by subjects in supine rest.
The LF and HF components of the patients were significantly lower than those of the healthy controls (P<0.05).
When Pearson correlation analysis was applied for the patient group, using indices of HRV with age, weight, height, DEV, TR and TT, the LF components positively related to TR and TT (P<0.01). (...)
Mots-clés Pascal : Main, Bras, Trouble dû aux vibrations, Homme, Exposition professionnelle, Médecine travail, Système nerveux autonome, Rythme cardiaque, Système nerveux parasympathique
Mots-clés Pascal anglais : Hand, Arm, Vibration induced disorder, Human, Occupational exposure, Occupational medicine, Autonomic nervous system, Heart rate, Parasympathetic nervous system
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0519499
Code Inist : 002B16I. Création : 18/05/2000.