Impact of an 84-hour workweek on biomarkers for stress, metabolic processes and diurnal rhythm.

摘要: Objectives This study examined the degree to which long workhours in combination with an extended workweek (12 hours/7 days) permanent day shifts (0700-1900), as requested by workers, influenced biomarkers for stress, metabolic processes, and diurnal rhythm. Methods Construction workers (N=50) working 84 hours a week, alternate weeks off, were compared construction (N=25) having traditional 40-hour work schedule. The participants all male between ages of 21 65 years. Blood samples obtained morning immediately prior start on workday 1, 5, 7 assess cholesterol, cortisol, dehydroepiandrosterone, melatonin, prolactin, testosterone, uric acid. Psychosocial circumstances assessed questionnaire. Results 84-hour group had higher melatonin concentrations reported job-control scores than group. For both groups, cholesterol lower 5 1. In group, most significantly Only testosterone showed significant decrease workdays 7. dehydroepiandrosterone acid remained stable across days, did Conclusions Working one's own freewill regimen is not, short-term, necessarily more harmful health similar type heavy worktasks. However, schedule beyond ordinary week results signs functional shift hormonal regulation. (Less)