EFFECTS OF TIMED BRIGHT-LIGHT EXPOSURE ON SHIFT-WORK ADAPTATION IN MIDDLE-AGED SUBJECTS

被引:57
作者
CAMPBELL, SS [1 ]
机构
[1] CORNELL UNIV, COLL MED, DEPT PSYCHIAT, HUMAN CHRONOBIOL LAB, WHITE PLAINS, NY 10605 USA
来源
SLEEP | 1995年 / 18卷 / 06期
关键词
AGING; ALERTNESS; BRIGHT LIGHT; CIRCADIAN RHYTHMS; PERFORMANCE; PHOTOTHERAPY; SHIFT WORK; SLEEP; SLEEPINESS; TEMPERATURE;
D O I
10.1093/sleep/18.6.408
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Shift workers suffer from a constellation of symptoms that can severely compromise their ability to perform optimally on-shift. The largest single factor contributing to shift-worker problems is sleep disturbance, and there is little question that the primary cause of such sleep disturbance is circadian disruption. Recently, a number of studies have demonstrated that timed exposure to bright light can help facilitate adaptation to simulated shift-work schedules, at least in younger subjects. The aim of the current study was to assess the effects of bright-light interventions in middle-aged individuals undergoing a simulated shift-work regimen. Results indicate that although light was effective in resetting the circadian clocks of these subjects by more than 6 hours, there was little effect on measures of on-duty alertness and performance or on off-duty sleep. These findings suggest that middle-aged subjects may be less phase-tolerant than young subjects, and they raise questions concerning the utility of bright-light interventions in some shift-work populations.
引用
收藏
页码:408 / 416
页数:9
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