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首页> 外文期刊>Pharmacology, Biochemistry and Behavior >Mood and performance effects of caffeine in relation to acute and chronic caffeine deprivation.
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Mood and performance effects of caffeine in relation to acute and chronic caffeine deprivation.

机译：咖啡因与急性和慢性咖啡因剥夺有关的情绪和性能影响。

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The mood and performance effects of caffeine deprivation (either 90 min, overnight, or at least 7 days) and ingestion (70 and 250 mg) were compared in young adults who were normally either moderate consumers (n = 49) or nonconsumers of caffeine (n = 18). Overnight caffeine deprivation produced dysphoric symptoms characteristic of caffeine withdrawal that were reduced, but still present, after longer-term abstinence. Acute caffeine intake affected the withdrawn consumers, nonwithdrawn consumers, and nonconsumers similarly. It increased jitteriness and decrease tiredness and headache. Furthermore, hand steadiness decreased as caffeine dose increased, whereas 70 mg, but not 250 mg, of caffeine was found to enhance performance on a simple reaction time task. These findings support the view that the negative effects experienced after overnight and longer-term caffeine deprivation play a significant role in influencing consumption of caffeine-containing drinks. Therefore, it would appear that to avoid the dysphoric symptoms resulting from both under- and overconsumption, regular caffeine consumers would have to regulate their caffeine intake fairly precisely.
机译：比较了通常是中度消费者（n = 49）或不消费咖啡因的年轻人的咖啡因剥夺（90分钟，过夜或至少7天）和摄入（70和250 mg）对情绪和性能的影响。 n = 18）。隔夜咖啡因剥夺会产生咖啡因戒断所特有的烦躁不安症状，经过长期禁酒后，这种症状减轻但仍然存在。急性咖啡因摄入量对撤消消费者，未撤消消费者和非消费者的影响类似。它增加了紧张感，减轻了疲劳和头痛。此外，随着咖啡因剂量的增加，手的稳定性下降，而发现70毫克而不是250毫克的咖啡因可以提高在简单的反应时间任务中的表现。这些发现支持这样的观点，即过夜和长期咖啡因剥夺后所产生的负面影响在影响含咖啡因的饮料的消费中起着重要作用。因此，为了避免因消费不足和过度消费而引起的烦躁不安症状，经常食用咖啡因的消费者将不得不相当精确地调节其咖啡因的摄入量。

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