| | | Human | professional athletes | Not specified | Does caffeine supplementation affect sleep in athletes? A systematic review of nine randomized controlled trials. |
| | | Human | professional athletes | Not specified | Does caffeine supplementation affect sleep in athletes? A systematic review of nine randomized controlled trials. |
| | | Human | professional athletes | Not specified | Does caffeine supplementation affect sleep in athletes? A systematic review of nine randomized controlled trials. |
| | | Human | professional athletes | Not specified | Does caffeine supplementation affect sleep in athletes? A systematic review of nine randomized controlled trials. |
| | | Human | professional athletes | Not specified | Does caffeine supplementation affect sleep in athletes? A systematic review of nine randomized controlled trials. |
| | | Human | professional athletes | Not specified | Does caffeine supplementation affect sleep in athletes? A systematic review of nine randomized controlled trials. |
| | | Human | — | Mean caffeine consumption varied from 212 to 285 mg/day. | The effects of caffeinated products on sleep and functioning in the military population: A focused review. |
| | | Human | the general population | Mean caffeine consumption varied from 212 to 285 mg/day. | The effects of caffeinated products on sleep and functioning in the military population: A focused review. |
| | | Human | the general population | Mean caffeine consumption varied from 212 to 285 mg/day. | The effects of caffeinated products on sleep and functioning in the military population: A focused review. |
| | | Human | deployed personnel | Mean caffeine consumption varied from 212 to 285 mg/day. | The effects of caffeinated products on sleep and functioning in the military population: A focused review. |
| | | Human | athletes | — | Risk or benefit? Side effects of caffeine supplementation in sport: a systematic review. |
| | | Human | female athletes taking a low-dose monophasic oral contraceptive steroid | 6 mg/kg body mass anhydrous caffeine. | The Effect of Caffeine Ingestion during Evening Exercise on Subsequent Sleep Quality in Females. |
| | | Human | female athletes taking a low-dose monophasic oral contraceptive steroid | 6 mg/kg body mass anhydrous caffeine. | The Effect of Caffeine Ingestion during Evening Exercise on Subsequent Sleep Quality in Females. |
| | | Human | participants | 2.5 mg/kg administered twice during continuous wakefulness. | Caffeine Intake Alters Recovery Sleep after Sleep Deprivation. |
| | | Human | participants | 2.5 mg/kg administered twice during continuous wakefulness. | Caffeine Intake Alters Recovery Sleep after Sleep Deprivation. |
| | | Human | participants | 2.5 mg/kg administered twice during continuous wakefulness. | Caffeine Intake Alters Recovery Sleep after Sleep Deprivation. |
| | | Human | participants | 2.5 mg/kg administered twice during continuous wakefulness. | Caffeine Intake Alters Recovery Sleep after Sleep Deprivation. |
| | | Human | participants | 2.5 mg/kg administered twice during continuous wakefulness. | Caffeine Intake Alters Recovery Sleep after Sleep Deprivation. |
| | | Human | participants | 2.5 mg/kg administered twice during continuous wakefulness. | Caffeine Intake Alters Recovery Sleep after Sleep Deprivation. |
| | | Human | participants | 2.5 mg/kg administered twice during continuous wakefulness. | Caffeine Intake Alters Recovery Sleep after Sleep Deprivation. |
| | | Human | children and young people (0-18 y) | Not specified | Empirical research evaluating the effects of non-traditional approaches to enhancing sleep in typical and clinical children and young people. |
| | | Human | healthy young women | 50 mg theanine, 30 mg caffeine | Theanine maintains sleep quality in healthy young women by suppressing the increase in caffeine-induced wakefulness after sleep onset. |
| | | Human | healthy young women | 50 mg theanine, 30 mg caffeine | Theanine maintains sleep quality in healthy young women by suppressing the increase in caffeine-induced wakefulness after sleep onset. |
| | | Human | — | — | The effect of caffeine on subsequent sleep: A systematic review and meta-analysis. |
| | | Human | — | — | The effect of caffeine on subsequent sleep: A systematic review and meta-analysis. |
| | | Human | — | — | The effect of caffeine on subsequent sleep: A systematic review and meta-analysis. |
| | | Human | — | — | The effect of caffeine on subsequent sleep: A systematic review and meta-analysis. |
| | | Human | — | — | The effect of caffeine on subsequent sleep: A systematic review and meta-analysis. |
| | | Human | — | — | The effect of caffeine on subsequent sleep: A systematic review and meta-analysis. |
| | | Human | — | — | The effect of caffeine on subsequent sleep: A systematic review and meta-analysis. |
| | | Human | — | — | The effect of caffeine on subsequent sleep: A systematic review and meta-analysis. |
| | | Animal | — | 58.9 mg g-1 caffeine in GE, comparable to 25 mg kg-1 pure caffeine. | The polyphenol/caffeine ratio determines the arousal-inducing properties of the green tea ethanol extract. |
| | | Animal | — | 58.9 mg g-1 caffeine in GE, comparable to 25 mg kg-1 pure caffeine. | The polyphenol/caffeine ratio determines the arousal-inducing properties of the green tea ethanol extract. |
| | | Human | trained runners | — | Impact of Caffeine Intake on 800-m Running Performance and Sleep Quality in Trained Runners. |
| | | Human | trained runners | — | Impact of Caffeine Intake on 800-m Running Performance and Sleep Quality in Trained Runners. |
| | | Human | trained runners | — | Impact of Caffeine Intake on 800-m Running Performance and Sleep Quality in Trained Runners. |
| | | Human | trained runners | — | Impact of Caffeine Intake on 800-m Running Performance and Sleep Quality in Trained Runners. |
| | | Human | — | — | Impact of Caffeine Intake on 800-m Running Performance and Sleep Quality in Trained Runners. |
| | | Human | adolescents | Not available | Insufficient sleep in adolescents and young adults: an update on causes and consequences. |
| | | Human | athletes | — | Caffeine and Exercise: What Next? |
| | | Human | depressed patients | 60 mg or 120 mg daily. | Low dose of caffeine enhances the efficacy of antidepressants in major depressive disorder and the underlying neural substrates. |
| | | Human | — | Not specified | Uncovering the effects and mechanisms of tea and its components on depression, anxiety, and sleep disorders: A comprehensive review. |
| | | Human | — | Not specified | Alzheimer's disease and sleep disorders: Insights into the possible disease connections and the potential therapeutic targets. |
| | | Animal | zebrafish larvae | 31.25 μM, 62.5 μM, and 120 μM | The Effect of Caffeine Exposure on Sleep Patterns in Zebrafish Larvae and Its Underlying Mechanism. |
| | | Animal | zebrafish larvae | 31.25 μM, 62.5 μM, and 120 μM | The Effect of Caffeine Exposure on Sleep Patterns in Zebrafish Larvae and Its Underlying Mechanism. |
| | | Animal | zebrafish larvae | 31.25 μM, 62.5 μM, and 120 μM | The Effect of Caffeine Exposure on Sleep Patterns in Zebrafish Larvae and Its Underlying Mechanism. |
| | | Human | athletes | Not specified | Medications for Sleep Schedule Adjustments in Athletes. |
