evidence table

L Theanine Attention Randomized Trial Evidence Table

Structured evidence table for L Theanine Attention Randomized Trial, generated from 2 reusable source documents in the Migaku knowledge base.

topicclaimevidence levelcitationsource
L Theanine Attention Randomized TrialEvidence regarding the acute effects of caffeine (CAF), L-theanine (TEA), and their combination remains inconsistent, particularly with respect to their combined influence on physical and cognitive performance in athletic populations.2Tuncer SY (2026)Acute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes: a randomized, double-blind, placebo-controlled crossover study.
L Theanine Attention Randomized TrialResults Condition effects were found for leg strength ( p = 0.004, ηp 2 = 0.24) and back strength ( p = 0.008, ηp 2 = 0.19).2Tuncer SY (2026)Acute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes: a randomized, double-blind, placebo-controlled crossover study.
L Theanine Attention Randomized TrialAdditionally, no significant difference was found between the conditions in aerobic endurance, maximum isometric handgrip strength, and hand-eye coordination results.2Tuncer SY (2026)Acute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes: a randomized, double-blind, placebo-controlled crossover study.
L Theanine Attention Randomized TrialIntroduction Modern athletic performance is driven not only by physical capacity but also by rapid decision-making, attentional control, and visuomotor coordination.2Tuncer SY (2026)Acute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes: a randomized, double-blind, placebo-controlled crossover study.
L Theanine Attention Randomized TrialSleep is a complex biological process whose evolutionary purpose has remained equivocal for quite some time.More recently, however, compelling evidence has emerged, leading to recognition of the numerous metabolic and physiological functions sleep contributes to and actively supports.4Conti Federica (2026)Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review
L Theanine Attention Randomized TrialEpidemiological studies have revealed that sleep deprivation is associated with an increased risk of all-cause mortality,alongside numerous chronic conditions imposing a heavy burden on our healthcare and socioeconomic systems alike,including cardiovascular disease, stroke, obesity, type 2 diabetes, and various types of cancer and neurological disorders.4Conti Federica (2026)Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review
L Theanine Attention Randomized TrialThe scope of this narrative review is to summarize the available evidence on the mechanisms of action and potential benefits of the above-listed nutrients in the context of acute or chronic sleep disturbances.4Conti Federica (2026)Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review
L Theanine Attention Randomized Trial, , Over the past few decades, there has been an increasing appreciation of the negative impact of sleep disturbances and circadian misalignments on all aspects of human health and performance, ranging from objective alertness, learning, memory, and cognition to emotional regulation, social wellbeing and, most remarkably, physical health.4Conti Federica (2026)Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review
topicL Theanine Attention Randomized Trial
claimEvidence regarding the acute effects of caffeine (CAF), L-theanine (TEA), and their combination remains inconsistent, particularly with respect to their combined influence on physical and cognitive performance in athletic populations.
evidence level2
citationTuncer SY (2026)
sourceAcute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes: a randomized, double-blind, placebo-controlled crossover study.
topicL Theanine Attention Randomized Trial
claimResults Condition effects were found for leg strength ( p = 0.004, ηp 2 = 0.24) and back strength ( p = 0.008, ηp 2 = 0.19).
evidence level2
citationTuncer SY (2026)
sourceAcute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes: a randomized, double-blind, placebo-controlled crossover study.
topicL Theanine Attention Randomized Trial
claimAdditionally, no significant difference was found between the conditions in aerobic endurance, maximum isometric handgrip strength, and hand-eye coordination results.
evidence level2
citationTuncer SY (2026)
sourceAcute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes: a randomized, double-blind, placebo-controlled crossover study.
topicL Theanine Attention Randomized Trial
claimIntroduction Modern athletic performance is driven not only by physical capacity but also by rapid decision-making, attentional control, and visuomotor coordination.
evidence level2
citationTuncer SY (2026)
sourceAcute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes: a randomized, double-blind, placebo-controlled crossover study.
topicL Theanine Attention Randomized Trial
claimSleep is a complex biological process whose evolutionary purpose has remained equivocal for quite some time.More recently, however, compelling evidence has emerged, leading to recognition of the numerous metabolic and physiological functions sleep contributes to and actively supports.
evidence level4
citationConti Federica (2026)
sourceDietary Protocols to Promote and Improve Restful Sleep: A Narrative Review
topicL Theanine Attention Randomized Trial
claimEpidemiological studies have revealed that sleep deprivation is associated with an increased risk of all-cause mortality,alongside numerous chronic conditions imposing a heavy burden on our healthcare and socioeconomic systems alike,including cardiovascular disease, stroke, obesity, type 2 diabetes, and various types of cancer and neurological disorders.
evidence level4
citationConti Federica (2026)
sourceDietary Protocols to Promote and Improve Restful Sleep: A Narrative Review
topicL Theanine Attention Randomized Trial
claimThe scope of this narrative review is to summarize the available evidence on the mechanisms of action and potential benefits of the above-listed nutrients in the context of acute or chronic sleep disturbances.
evidence level4
citationConti Federica (2026)
sourceDietary Protocols to Promote and Improve Restful Sleep: A Narrative Review
topicL Theanine Attention Randomized Trial
claim, , Over the past few decades, there has been an increasing appreciation of the negative impact of sleep disturbances and circadian misalignments on all aspects of human health and performance, ranging from objective alertness, learning, memory, and cognition to emotional regulation, social wellbeing and, most remarkably, physical health.
evidence level4
citationConti Federica (2026)
sourceDietary Protocols to Promote and Improve Restful Sleep: A Narrative Review

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Source documents

  1. Acute effects of combined and isolated caffeine and theanine supplementation on physical and cognitive performance in competitive athletes: a randomized, double-blind, placebo-controlled crossover study.
  2. Dietary Protocols to Promote and Improve Restful Sleep: A Narrative Review