Richard J. Bloomer*, Keith R. Martin, Jacquelyn C. Pence

Bloomer et al. J Clin Transl Res; 8(2):5

Published online: March 1, 2022


Background and aim: The activity of “gaming” has increased greatly in popularity in recent years, with many gamers using nutritional supplements to aid mood and gaming performance. We evaluated the impact of AmaTea® Max (referred to as AmaTea® throughout; a patented dietary supplement consisting of a blend of caffeine and polyphenol antioxidants), compared to both caffeine and a placebo, on gaming and cognitive performance in active gamers.
Methods: Subjects reported to the lab on three occasions, separated by approximately one week. On each day, they had baseline measurements taken and then played the game Fortnite for four one-hour periods. Measures of cognitive performance, gaming performance, heart rate and blood pressure, and blood cortisol were measured before and at selected times following gameplay.
Results: Neither caffeine nor AmaTea® impacted gaming or cognitive performance in a statistically significant manner. However, a trend (p=0.075) was noted for the condition effect for kills/match, with values 21% higher for AmaTea® (1.84) compared to placebo (1.51), and 12% higher for AmaTea® compared to caffeine (1.63). Subjective mood was relatively unaffected, although a condition effect was noted for jittery (p=0.05), with values lower for placebo than for caffeine (p=0.02). Blood pressure was minimally elevated with both AmaTea® and caffeine, while cortisol followed the normal diurnal variation and was lower for placebo than AmaTea® and caffeine.
Conclusion: AmaTea® modestly increased kills/match during gameplay. It is possible that a different gaming stimulus, varied time of gameplay, or different dosage of the supplement may have yielded different results.
Relevance for Subjects: Active gamers who seek to use a dietary supplement for purposes of gaming performance may benefit slightly from ingestion of AmaTea® prior to gameplay, while experiencing greater vigor and lower fatigue as compared to placebo.



Author affiliation

Center for Nutraceutical and Dietary Supplement Research, College of Health Sciences, University of Memphis, Memphis, TN, USA

*Corresponding author
Richard J. Bloomer
106 Elma Roane Fieldhouse, University of Memphis, Memphis, TN 38152
Tel: 901-678-5638

Handling editor:
Michal Heger
Department of Pharmaceutics, Utrecht University, the Netherlands
Department of Pharmaceutics, Jiaxing University Medical College, Zhejiang, China


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