|Document ID (ISN)||102068|
|ISSN - Serial title
||0300-8134 - Journal of Human Ergology
|Convention or series no.
||Sato S., Taoda K., Kawamura M., Wakaba K., Fukuchi Y., Nishiyama K.
||Heart rate variability during long truck driving work
||Dec. 2001, Vol.30, No.1-2, p.235-240. Illus. 17 ref.
||Ambulatory electrocardiograms of six long-distance truck drivers were recoded during their work period in order to observe the autonomic nervous function and symptoms during work. The RR50 (the number of cycles with R-R interval >50ms) and the low-frequency power/high-frequency power (LFP/HFP) ratio were calculated every two minutes. During naps, RR50 was significantly higher than during other periods of the work shift, while the LFP/HFP ratio was significantly lower. RRRR50 was also significantly higher in the morning than in the afternoon, while again the LFP/HFP ratio was lower. These results show that the parasympathetic nervous activities were more dominant than sympathetic nervous activities in the morning. Driving during high parasympathetic nervous activity levels may add to cardiovascular stress and lead to drowsiness.
||drivers; road transport; pulse rate; hours of work
||male workers; Japan; electrocardiographic changes; sympathetic nervous system; sleep disturbances; workload assessment; electrocardiography; cardiovascular disorders
||D - Periodical articles
|Country / State or Province||Japan|
||Transport and communications
|Broad subject area(s)
||Industries and occupations
Hours of work