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The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.

Caffeine improves various aspects of athletic performance in adolescents independent of their 163 C > A CYP1A2 genotypes

Spineli, Higor, Pinto, Maryssa P., Dos Santos, Bruna P., Lima‐Silva, Adriano E., Bertuzzi, Romulo, Gitaí, Daniel L. G., de Araujo, Gustavo G.·2020·Scandinavian Journal of Medicine & Science in Sports
DOI 10.1111/sms.13749
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Abstract

Purpose: The purpose of this study was to investigate whether variations in 163 C > A CYP1A2 genotypes (rs 762 551) (AA, AC, and CC) modify the ergogenic effects of caffeine (CAF) on strength, power, muscular endurance, agility, and endurance in adolescent athletes. Methods: One hundred adolescents (age = 15 ± 2 years) were recruited. Participants ingested CAF (6 mg.kg −1 ) or placebo (PLA, 300 mg of cellulose) 1 hour before performing a sequence of physical tests: handgrip strength, vertical jumps, agility test, sit‐ups, push‐ups, and the Yo‐Yo intermittent recovery test level 1 (Yo‐Yo IR1). Results: Compared to PLA, CAF enhanced ( P < .05) sit‐up (CAF = 37 ± 9; PLA = 35 ± 8 repetitions) and push‐up repetitions (CAF = 26 ± 11; PLA = 24 ± 11 repetitions), and increased distance covered in Yo‐Yo IR1 test (CAF = 1010.4 ± 378.9; PLA = 903.2 ± 325.7 m). There was no influence of CAF on handgrip strength (CAF = 35.1 ± 8.9; PLA = 33.7 ± 8.7 kgf), countermovement jump height (CAF = 49.3 ± 12.6; PLA = 47.9 ± 13.8 cm), spike jump height (CAF = 54.2 ± 13.6; PLA = 52.9 ± 14.5 cm), and time in agility test (CAF = 15.8 ± 1.1; PLA = 15.9 ± 1.3 s, P > .05). When present, the ergogenic effect of CAF was not dependent of genotype. Conclusion: CAF improves muscular endurance and aerobic performance in adolescent athletes, regardless of their 163 C > A CYP1A2 genotype.

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Research works printed but not linked: 29

  1. 10.1111/sms.12501 · DOI
  2. 10.1016/j.neubiorev.2009.01.001 · DOI · Paper page
  3. 10.1519/JSC.0b013e3181c1f88a · DOI · Paper page
  4. 10.1111/bph.13187 · DOI
  5. 10.2165/11317770-000000000-00000 · DOI · Paper page
  6. 10.1249/MSS.0b013e3181cabbd8 · DOI · Paper page
  7. 10.1123/ijspp.2013-0448 · DOI
  8. 10.1186/s12970-018-0216-0 · DOI · Paper page
  9. 10.1007/s11845-018-1780-7 · DOI
  10. 10.1371/journal.pone.0195943 · DOI
  11. 10.3390/nu9030269 · DOI
  12. 10.1136/jmg.2004.022012 · DOI
  13. Altimari LR, 2001, Caffeine: nutritional ergogenic in sport, Braz J Sci Mov, 9, 57
  14. 10.1249/00003677-197400020-00006 · DOI · Paper page
  15. 10.1080/1040-830491379245 · DOI · Paper page
  16. Orysiak J, 2014, Relationship between ACTN3 R577X polymorphism and maximal power output in elite Polish athletes, Med, 50, 303
  17. PollockML WilmoreJH.Exercícios na Saúde e na Doença: Avaliação e Prescrição para Prevenção e Reabilitação. MEDSI: Editora Médica e Científica LTDA;1993:718p.
  18. Mayhew JL, 1991, Push‐ups as a measure of upper body strength, J app Sport Sci Res, 5, 16
  19. Cohen J, 1988, Statistical power analysis for the behavioral sciences
  20. 10.1123/ijspp.2014-0103 · DOI
  21. 10.1017/S0007114515002573 · DOI
  22. 10.1139/apnm-2014-0268 · DOI
  23. 10.1186/s12970-016-0157-4 · DOI
  24. 10.1007/s00726-014-1702-6 · DOI
  25. 10.1519/JSC.0000000000001280 · DOI
  26. 10.1186/s12970-020-00349-6 · DOI · Paper page
  27. 10.1007/s40279-018-0997-y · DOI · Paper page
  28. 10.1080/02640414.2014.965189 · DOI
  29. Algrain HA, 2015, The effects of a polymorphism in the cytochrome P450 CYP1A2 gene on performance enhancement with caffeine in recreational cyclists, J Caffeine Res, 6, 1

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Metadata

Authors
Spineli, H., Pinto, M. P., Dos Santos, B. P., Lima‐Silva, A. E., Bertuzzi, R., Gitaí, D. L. G., & de Araujo, G. G.
Affiliations
  • Postgraduate Program in Nutrition – PPGNUT Federal University of Alagoas Alagoas Brazil
  • Postgraduate Program in Health Sciences – PPGCS Federal University of Alagoas Alagoas Brazil
  • Human Performance Research Group Technological Federal University of Parana Parana Brazil
  • Endurance Performance Research Group (GEDAE‐USP) School of Physical Education and Sport University of São Paulo São Paulo Brazil
ORCID
Venue
Scandinavian Journal of Medicine & Science in Sports
Publisher
Wiley
Published
2020-07-13
Volume
30
Issue
10
Pages
1869-1877
ISSN
  • 0905-7188
  • 1600-0838
DOI
10.1111/sms.13749
Cited by
37
References
10
Language
en
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor)
Funders
  • Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (60030 1121/2015)
  • Fundação de Amparo à Pesquisa do Estado de Alagoas (60030 1121/2015)

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CoChat. (2026). Citation check: Caffeine improves various aspects of athletic performance in adolescents independent of their 163 C > A CYP1A2 genotypes. https://app.cochat.ai/papers/10.1111/sms.13749
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Spineli, H., Pinto, M. P., Dos Santos, B. P., Lima‐Silva, A. E., Bertuzzi, R., Gitaí, D. L. G., & de Araujo, G. G. (2020). Caffeine improves various aspects of athletic performance in adolescents independent of their 163 C > A CYP1A2 genotypes. Scandinavian Journal of Medicine & Science in Sports. https://doi.org/10.1111/sms.13749

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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