TY  - JOUR
PY  - 2004//
TI  - Subjective and objective evaluation of sleep and performance in daytime versus nighttime sleep in extended-hours shift-workers at an underground mine
JO  - Journal of Occupational and Environmental Medicine
A1  - Hossain, Jamil L.
A1  - Reinish, Lawrence W.
A1  - Heslegrave, Ronald J.
A1  - Hall, Gordon W.
A1  - Kayumov, Leonid
A1  - Chung, Sharon A.
A1  - Bhuiya, Pintu
A1  - Jovanovic, Dragona
A1  - Huterer, Nada
A1  - Volkov, Jana
A1  - Shapiro, Colin M.
SP  - 212
EP  - 226
VL  - 46
IS  - 3
N2  - Extended hours of shift work has the potential for adverse consequences for workers, particularly during the nightshift, such as poorer sleep quality during the day, increased worker fatigue, and fatigue-related accidents and decreased work performance. This study examined subjective and objective measurements of sleep and performance in a group of underground miners before and after the change from a backward-rotating 8-hour to a forward-rotating 10-hour shift schedule. The purpose of this study was to evaluate the short- and long-term impact of a shift schedule change on sleep and performance. The results demonstrated improved subjective and objective measures of sleep and performance on the new 10-hour nightshift schedule. The 10-hour nightshift workers subjectively reported more refreshing sleep, fewer performance impairments and driving difficulties than 8-hour nightshift workers. The results of the objective measures of sleep and performance on the 10-hour nightshifts were overall similar or possibly better than those measured on the 10-hour dayshifts. These are some of the first data to suggest that a nightshift that does not encompass the entire night period could have significant benefits to shift-workers. We suggest that these benefits are mostly the result of the timing of the new nightshift start and end times rather than other shift-schedule factors.<p /> <p>Language: en</p>
LA  - en
SN  - 1076-2752
UR  - http://dx.doi.org/
ID  - ref1
ER  -