| Document ID (ISN) | 111985 |
| CIS number |
11-0727 |
| ISSN - Serial title |
0001-4575 - Accident Analysis and Prevention |
| Year |
2011 |
| Convention or series no. |
|
| Author(s) |
Williamson A., Friswell R. |
| Title |
Investigating the relative effects of sleep deprivation and time of day on fatigue and performance |
| Bibliographic information |
May 2011, Vol.43, No.3, p.690-697. Illus. 22 ref. |
| Abstract |
The objective of this study was to examine the relative effects of time of day and sleep deprivation on fatigue and performance. Two independent groups were exposed to 28 h of sleep deprivation beginning at 06:00 h for one group (39 participants) and at 00:00 h for the other (22 participants). By varying the start time for the two groups, but keeping constant the duration of sleep deprivation, the effects of variations in the time of day of testing were examined. For the 06:00 h start group, the longest period without sleep occurred close to the low point of the circadian rhythm. For the 00:00 h start group, the circadian low point coincided with only two to six hours of sleep deprivation. Performance was evaluated two-hourly using computer-based cognitive performance and memory tests, together with subjective fatigue ratings. Both time of day and sleep deprivation affected performance. The implications of these findings for fatigue management are discussed. |
| Descriptors (primary) |
work efficiency; hours of work; sleep deprivation; fatigue assessment |
| Descriptors (secondary) |
Australia; circadian rhythm; cognitive performance; subjective assessment |
| Document type |
D - Periodical articles |
| Subject(s) |
Occupational physiology
|
| Broad subject area(s) |
Physiology, ergonomics
|
| Browse category(ies) |
Fatigue
Hours of work
Vigilance
|
