The effect of caffeine on cognitive performance is influenced by CYP1A2 but not ADORA2A genotype, yet neither genotype affects exercise performance in healthy adults.
Eur J Appl Physiol
; 120(7): 1495-1508, 2020 Jul.
Article
em En
| MEDLINE
| ID: mdl-32356023
ABSTRACT
PURPOSE:
To determine the influence of two commonly occurring genetic polymorphisms on exercise, cognitive performance, and caffeine metabolism, after caffeine ingestion.METHODS:
Eighteen adults received caffeine or placebo (3 mg kg-1) in a randomised crossover study, with measures of endurance exercise (15-min cycling time trial; 70-min post-supplementation) and cognitive performance (psychomotor vigilance test; PVT; pre, 50 and 95-min post-supplementation). Serum caffeine and paraxanthine were measured (pre, 30 and 120-min post-supplementation), and polymorphisms in ADORA2A (rs5751876) and CYP1A2 (rs762551) genes analysed.RESULTS:
Caffeine enhanced exercise performance (P < 0.001), but effects were not different between participants with ADORA2A 'high' (n = 11) vs. 'low' (n = 7) sensitivity genotype (+ 6.4 ± 5.8 vs. + 8.2 ± 6.8%), or CYP1A2 'fast' (n = 10) vs. 'slow' (n = 8) metabolism genotype (+ 7.2 ± 5.9 vs. + 7.0 ± 6.7%, P > 0.05). Caffeine enhanced PVT performance (P < 0.01). The effect of caffeine was greater for CYP1A2 'fast' vs. 'slow' metabolisers for reaction time during exercise (- 18 ± 9 vs. - 1.0 ± 11 ms); fastest 10% reaction time at rest (- 18 ± 11 vs. - 3 ± 15 ms) and lapses at rest (- 3.8 ± 2.7 vs. + 0.4 ± 0.9) (P < 0.05). There were no PVT differences between ADORA2A genotypes (P > 0.05). Serum caffeine and paraxanthine responses were not different between genotypes (P > 0.05).CONCLUSION:
Caffeine enhanced CYP1A2 'fast' metabolisers' cognitive performance more than 'slow' metabolisers. No other between-genotype differences emerged for the effect of caffeine on exercise or cognitive performance, or metabolism.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cafeína
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Exercício Físico
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Citocromo P-450 CYP1A2
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Receptor A2A de Adenosina
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Genótipo
Tipo de estudo:
Clinical_trials
Limite:
Adult
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Female
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Humans
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Male
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article