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Effects of different doses of caffeine on cognitive performance in healthy physically active individuals

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Date
2024-09-04
Author
Ramírez de la Cruz, María
Esteban García, Paula
Abian Vicen, Pablo
Bravo Sánchez, Alfredo
Piñas Bonilla, Inés
Abian Vicen, Javier
Estado
info:eu-repo/semantics/publishedVersion
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Abstract
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Purpose Caffeine is a potent central nervous system stimulant that increases the activity of the prefrontal cortex and can improve various cognitive skills. An improvement in these cognitive skills can lead to further benefits in athletic performance. Therefore, it is necessary to clarify the dose-response of caffeine on cognitive performance. This study aimed to determine the effects of different doses of caffeine on sport-related cognitive aspects. Methods Twenty-nine healthy physically active young adults were recruited. All participants completed three trials under the following conditions: (a) placebo, (b) 3 mg/kg, or (c) 6 mg/kg body mass of caffeine. In each trial, different cognitive abilities were evaluated with the following battery of tests: reaction time (Dynavision™ D2), anticipation (Bassin Anticipation Timer), sustained attention (Go/No-Go and Eriksen Flanker Test) and memory tests. Moreover, the side effects and the perceived sensation index were recorded 24 h after each test. Results Reaction time only improved following 6 mg/kg of caffeine intake (Physical reaction time: -0.04 s, 95% CI -0.08 to -0.01 s, P = 0.036, d = 0.5; Motor reaction time: -0.04 s, 95% CI -0.07 to -0.01 s, P = 0.008, d = 0.6) compared to the placebo condition. Anticipation, sustained attention, and memory were not affected after either caffeine dose intake (all P > 0.05). In addition, the 6 mg/kg dose of caffeine augmented the occurrence of the side effects of increased activeness (P = 0.046) and nervousness (P = 0.001). Conclusion Acute intake of 6 mg/kg caffeine is effective in improving reaction time despite increasing the occurrence of side effects in healthy physically active young adults. Study registration This study has been registered in ClinicalTrials whose ID is: NCT05995314 (2023-08-08).
 
URI
https://doi.org/10.1007/s00394-024-03486-9
Effects of different doses of caffeine on cognitive performance in healthy physically active individuals
Tipo de Actividad
Artículos en revistas
ISSN
1436-6207
Palabras Clave
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Ergogenic aid · Sports performance · Reaction time · Anticipation · Attention · Memory
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