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Evidence suggests Caffeine mayincreaseCognitive performance.
10 studies (10 claims)
Moderate consensus
Typical effective dose 120 (120–120) mgacross 1 dosed study
Study Claims
| Intervention | Direction | Endpoint | Type | Population | Dosage | Title |
|---|---|---|---|---|---|---|
| combined caffeine (CAF) and L-theanine (THE) supplementation | Increases - more effective on cognitive performance | cognitive performance | Human | elite national curling athletes | — | Effect of single or combined caffeine and L-Theanine supplementation on shooting and cognitive performance in elite curling athletes: a double-blind, placebo-controlled study.cited 2× |
| combined caffeine (CAF) and L-theanine (THE) supplementation | Increases - best cognitive performance were achieved | cognitive performance | Human | elite national curling athletes | — | Effect of single or combined caffeine and L-Theanine supplementation on shooting and cognitive performance in elite curling athletes: a double-blind, placebo-controlled study.cited 2× |
| Caffeine used as a supplement | Increases - has been shown to improve | physical and cognitive performance | Human | several sport modalities | — | Acute caffeine supplementation in combat sports: a systematic review.cited 51× |
| sham caffeine ingestion | No effect - was not evident | cognitive performance | Human | healthy individuals | — | Belief in caffeine's ergogenic effect on cognitive function and endurance performance: A sham dose-response study. |
| low dose of caffeine | Increases - improved | cognitive performance | 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.cited 29× |
| caffeine plus TMR | Increases - improve | cognitive performance | Human | — | Not specified in the abstract. | Comparing Effects of Caffeine and Total Motion Release Technique on Cognitive, Neuromuscular, and Anaerobic Function in Semi-Professional Male Sprinters: A Randomized Controlled Trial. |
| caffeine (5 mg/kg) | No effect - compare this to an equivalent guarana dose | cognitive performance | Human | Twenty-five participants | — | Cognitive effects of guarana supplementation with maximal intensity cycling.cited 4× |
| caffeine | No effect - neither caffeine nor glucose significantly influence cognitive performance | cognitive performance | Human | young adults | Not specified | Feeling smart: Effects of caffeine and glucose on cognition, mood and self-judgment.cited 25× |
| caffeine | Increases - could be used to enhance | cognitive performance | Human | healthy young adults in a military context when personnel are sleep-deprived | — | A Systematic Review of the Effect of Dietary Supplements on Cognitive Performance in Healthy Young Adults and Military Personnel.cited 18× |
| caffeine | Increases - has well established effects for promoting | physical and cognitive performance | Human | — | — | The Effect of Acute Caffeine Ingestion on Tactical Performance of Professional Soccer Players.cited 4× |
| caffeine | Increases - can improve | physical and cognitive performance | Human | — | — | Acute caffeine supplementation and live match-play performance in team-sports: A systematic review (2000-2021).cited 4× |