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首页> 外文期刊>Human psychopharmacology: clinical and experimental >Caffeine at work.
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Caffeine at work.

机译：咖啡因在工作。

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RATIONALE: There is a large literature on the effects of caffeine on performance. Most of the studies have been conducted in the laboratory and further information is required on the effects of caffeine consumption on performance and safety at work. OBJECTIVES: The present studies aimed to determine whether the level of caffeine consumption influenced changes in alertness and performance over the working day. Secondary analyses of a large epidemiological database were also conducted to examine associations between caffeine consumption and cognitive failures and accidents at work. METHODS: In the first study 110 volunteers, all of whom were regular caffeine consumers, rated their alertness and carried out a simple reaction time task before and after work on a Monday and Friday. Caffeine consumption during the day was recorded and volunteers were sub-divided into low and high consumers on the basis of a median split (220 mg/day). The second study involved secondary analyses of a database formed by combining the Bristol Stress and Health at Work and Cardiff Health and Safety at Work studies. In the first analyses associations between caffeine consumption and frequency of cognitive failures were examined in a sample of 1253 white-collar workers. The second set of analyses examined associations between caffeine consumption and accidents at work in a sample of 1555 workers who were especially at risk of having an accident. RESULTS: The results from the first study showed that those who consumed higher levels of caffeine reported significantly greater increases in alertness over the working day and a significantly smaller slowing of reaction time. The results from the second study demonstrated significant associations between caffeine consumption and fewer cognitive failures and accidents at work. After controlling for possible confounding factors it was found that higher caffeine consumption was associated with about half the risk of frequent/very frequent cognitive failures and a similar reduction in riskfor accidents at work. CONCLUSIONS: Overall, the results from the three analyses show that caffeine consumption may have benefits for performance and safety at work. Copyright (c) 2005 John Wiley & Sons, Ltd.
机译：理由是:有一个大的文献咖啡因对性能的影响。研究都是在实验室里进行需要进一步的信息的影响咖啡因的摄入对性能和安全工作。确定水平的咖啡因警觉性和消费的影响变化性能在工作日。分析了大型流行病学数据库也进行了检查之间的关联咖啡因的摄入和认知失败和在工作中事故。110名志愿者,他们是常规咖啡因消费者认为他们的警觉性和执行一个简单的反应时间任务之前和之后的工作在周一和周五。白天被记录和志愿者分为低和高的消费者平均分割的基础(220毫克/天)。研究二次分析的数据库结合形成的布里斯托尔的压力和健康卡迪夫在工作和健康和安全工作研究。咖啡因的摄入和频率之间的关系认知失败样本的检测1253白领。分析研究了咖啡因之间的关联消费和事故工作的样本1555名工人被特别的危险有一个意外。第一项研究表明,那些高消耗水平的咖啡因报道明显更大工作日和提高警觉性的放缓明显较小,反应时间。第二项研究的结果咖啡因之间重要的关系消费和更少的认知失败和在工作中事故。混杂因素发现更高咖啡因的摄入有关一半的风险频繁/非常频繁的认知失败和类似的减少风险在工作中事故。三个分析的结果表明,咖啡因的摄入可能有好处性能和安全工作。2005年约翰·威利& Sons有限公司

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