3 Iconography
Access to the text (HTML) Access to the text (HTML)
PDF Access to the PDF text

Access to the full text of this article requires a subscription.
  • If you are a subscriber, please sign in 'My Account' at the top right of the screen.

  • If you want to subscribe to this journal, see our rates

  • You can purchase this item in Pay Per ViewPay per View - FAQ : 30,00 € Taxes included to order
    Pages Iconography Videos Other
    6 3 0 0

Science & Sports
Volume 26, n° 5
pages 272-277 (novembre 2011)
Doi : 10.1016/j.scispo.2011.07.003
Received : 5 April 2010 ;  accepted : 5 July 2011
The effects of creatine supplementation on performance and hormonal response in amateur swimmers
Effets d’une supplémentation en créatine sur la performance et la réponse hormonale chez des nageurs amateurs

D. Sheikholeslami Vatani a, , H. Faraji b, R. Soori c, M. Mogharnasi d
a Department of physical education and sport sciences, University of Kurdistan, Sanandaj, Iran 
b Department of Physical Education & Sport Science, Azad University Branch of Marivan, Marivan, Iran 
c Department of physical education and sport sciences, University of Tehran, Tehran, Iran 
d Department of physical education and sport sciences, University of Sistan & Baluchestan, Zahedan, Iran 

Corresponding author.

The purpose of this study was to determine the influence of short-term creatine supplementation on sprint swimming performance (50 and 100m) and hormonal responses (growth hormone, testosterone and cortisol).


Twenty amateur male swimmers ingested creatine monohydrate (CR) or a matched placebo (PL) for 6 days. All subjects performed 6 days, swimming exercise. The subjects were tested for performance and hormonal responses the day before and after this creatine loading.


The mean swimming time of CR group in 50m was significantly decreased (Before-period: 53.1±3.73s, after-period: 50.7±2.84s). Growth hormone and cortisol were not affected by this creatine loading. But, testosterone concentration was significantly greater in CR compared to PL after supplementation period (P <0.05).


Our data suggest that short-term creatine supplementation has improved 50m sprint performance in amateur swimmer and it seems unlikely creatine loading is hormonally mediated.

The full text of this article is available in PDF format.

Le but de cette étude était de déterminer l’influence à court terme d’une supplémentation en créatine sur la performance lors de sprints en natation (50 et 100m) et sur les réponses hormonales (hormone de croissance, testostérone et le cortisol).


Vingt nageurs amateurs ont ingéré du monohydrate de créatine (CR) ou un placebo (PL) pendant six jours pendant lesquels ils ont poursuivi leur entraînement de natation. Les performances et les réponses hormonales ont été enregistrées le jour précédent et après cette période de charge orale en créatine.


Le temps de nage moyen du groupe CR sur 50m était significativement diminué (53,1±3,73 secondes avant charge vs 50,7±2,84 secondes après supplémentation). L’hormone de croissance et le cortisol n’ont pas été affectés par cette charge en créatine. En revanche, la concentration de testostérone était significativement plus élevée dans CR par rapport à PL après la période de supplémentation (p <0,05).


Nos résultats suggèrent qu’une supplémentation de courte durée en créatine a amélioré de manière significative la performance lors de sprints sur 50m chez des nageurs amateurs sans que l’on puisse imputer de manière objective une médiation hormonale.

The full text of this article is available in PDF format.

Keywords : Swimmers, Creatine supplementation, Anabolic hormones

Mots clés : Nageurs, Supplémentation en créatine, Hormones anabolisantes

© 2011  Elsevier Masson SAS. All Rights Reserved.
EM-CONSULTE.COM is registrered at the CNIL, déclaration n° 1286925.
As per the Law relating to information storage and personal integrity, you have the right to oppose (art 26 of that law), access (art 34 of that law) and rectify (art 36 of that law) your personal data. You may thus request that your data, should it be inaccurate, incomplete, unclear, outdated, not be used or stored, be corrected, clarified, updated or deleted.
Personal information regarding our website's visitors, including their identity, is confidential.
The owners of this website hereby guarantee to respect the legal confidentiality conditions, applicable in France, and not to disclose this data to third parties.
Article Outline