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Minimizing Work Schedule Disruption with Bright Light.

PB95268009

Publication Date	1994
Personal Author	Campbell, S. S.
Page Count	30
Abstract	The effects of bright light interventions on schedule adaptation to night work in middle aged individuals were investigated in a simulated shift work study. Twenty six subjects aged 40 to 60 years participated in the study. The subjects performed the Simulated Assembly Line Task during simulated night shifts. At midnight on day one, the first of three consecutive night shifts began. From midnight until eight the following morning the subjects worked individually at specially designed work stations. The Active Group received a 4 hour pulse of bright light (greater than 4000 lux) at the start of the first night shift from midnight to 4 AM, followed by ambient room illumination, less than 100 lux, for the remainder of the first shift. On the two subsequent night shifts the group was exposed to illunimation of about 1000 lux for the duration of each shift. The Control Group was exposed to normal ambient illumination of less than 100 lux during the night shifts. The subjects were in bed for 8 hours following breakfast after the night shift ended. They were not allowed to nap during the entire study.
Keywords	Circadian rhythms Human factors engineering Illuminance Lighting equipment Light(Visible radiation) Sleep Mood Alertness
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	94E - Environmental Engineering 94D - Job Environment
Corporate Authors	Cornell Univ. Medical Coll., New York. Dept. of Psychiatry.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	199523

Minimizing Work Schedule Disruption with Bright Light.

Minimizing Work Schedule Disruption with Bright Light.
PB95268009

Publication Date	1994
Personal Author	Campbell, S. S.
Page Count	30
Abstract	The effects of bright light interventions on schedule adaptation to night work in middle aged individuals were investigated in a simulated shift work study. Twenty six subjects aged 40 to 60 years participated in the study. The subjects performed the Simulated Assembly Line Task during simulated night shifts. At midnight on day one, the first of three consecutive night shifts began. From midnight until eight the following morning the subjects worked individually at specially designed work stations. The Active Group received a 4 hour pulse of bright light (greater than 4000 lux) at the start of the first night shift from midnight to 4 AM, followed by ambient room illumination, less than 100 lux, for the remainder of the first shift. On the two subsequent night shifts the group was exposed to illunimation of about 1000 lux for the duration of each shift. The Control Group was exposed to normal ambient illumination of less than 100 lux during the night shifts. The subjects were in bed for 8 hours following breakfast after the night shift ended. They were not allowed to nap during the entire study.
Keywords	Circadian rhythms Human factors engineering Illuminance Lighting equipment Light(Visible radiation) Sleep Mood Alertness
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	94E - Environmental Engineering 94D - Job Environment
Corporate Authors	Cornell Univ. Medical Coll., New York. Dept. of Psychiatry.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
Title Note	Final rept.
NTIS Issue Number	199523