Abstract
In the present day world every occupation induces various degrees of stress on individual although the perception may vary in individual to individual and in certain occupation it is greatest and such occupations are called hazardous occupation. The driver who is taking driving as a profession and exposed in transport industry also has to do shift work. Stress induces a wide range of physiological and or behavioral changes that have evolved along phylogeny which take place under different situations 1 . Shift work is associated with an increased rate of cardiovascular disease and accidents. Discordance between circadian rhythm of stress related biological variables and the work sleep schedule explains the reduced efficiency of work. In obese persons we see increased sympathetic modulation of arterial pressure. Studies showed that there was a decreased LF and HF component of HRV in obese individual when compared with normal 11 . Spectral analysis showed that obese individual will have low LF component. This low LF power of heart rate reflects the diminished adrenocepter responsiveness 12 . Thus both obesity and driving (hazardous occupation) have got profound adverse effect on autonomic activity. The present study was devised to evaluate the chief determinant factor among these drivers in the modulation of autonomic activity.
Highlights
In the present day world every occupation induces various degrees of stress on individual the perception may vary in individual to individual and in certain occupation it is greatest and such occupations are called hazardous occupation
In order to find out the degree of shift in the autonomic nervous system the frequency domain of HRV were analyzed in that, the LF component associated with sympathetic activity showed a increase and HF component indicating parasympathetic activity was decreased, as experience increases
This was in argument with the study of effect of HRV in driving mental fatigue, found that sympathetic activity of the subjects enhanced after the simulated driving while HF component decreased[13]
Summary
In the present day world every occupation induces various degrees of stress on individual the perception may vary in individual to individual and in certain occupation it is greatest and such occupations are called hazardous occupation. Shift work is associated with an increased rate of cardiovascular disease and accidents. Martica Hall et al (2004)[3] showed that changes in HRV with acute stress may represent one pathway to disturbed sleep It is evident from the study that stress related changes in heart rate variability are associated with significant morbidity and increased risk of mortality[3]. Decrease in heart rate variability is induced by the increased activity of the sympathetic branch of the autonomic nervous system, under stressful condition. Spectral analysis showed that obese individual will have low LF component This low LF power of heart rate reflects the diminished adrenocepter responsiveness[12]. Both obesity and driving (hazardous occupation) have got profound adverse affect on autonomic activity. The 61 subjects were grouped according to their work experience into two groups and according to BMI in to three groups
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
