Dietary Caffeine, Performance and Mood: Enhancing and Restorative Effects after Controlling for Withdrawal Reversal
| Autor: | Jack E. James, Frances Harte, Marian Kane, M. Elizabeth Gregg |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent media_common.quotation_subject Neuropsychological Tests Placebo Profile of mood states behavioral disciplines and activities chemistry.chemical_compound Caffeine Reaction Time medicine Humans Saliva Biological Psychiatry Sleep restriction media_common Sex Characteristics Middle Aged Abstinence Diet Substance Withdrawal Syndrome Affect Psychiatry and Mental health Sleep deprivation Neuropsychology and Physiological Psychology Mood chemistry Anesthesia Physical therapy Sleep Deprivation Central Nervous System Stimulants Female medicine.symptom Arousal Psychology Psychomotor Performance Vigilance (psychology) |
| Zdroj: | Neuropsychobiology. 52:1-10 |
| ISSN: | 1423-0224 0302-282X |
| DOI: | 10.1159/000086172 |
| Popis: | This study aimed to determine whether sustained (i.e. dietary) use of caffeine has net effects on performance and mood compared with sustained abstinence, and whether dietary caffeine restores performance and mood adversely affected by sleep restriction. Participants (n = 96) alternated weekly between ingesting placebo and caffeine (1.75 mg/kg) three times daily for 4 consecutive weeks, while either rested or sleep restricted. Performance involved either a single task requiring sustained vigilance or a varied battery of brief psychomotor and cognitive tasks, and mood was assessed using the Profile of Mood States. Caffeine had no significant net enhancing effects for either performance or mood when participants were rested, and produced no net restorative effects when performance and mood were degraded by sleep restriction. |
| Databáze: | OpenAIRE |
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