Creatine supplementation does not improve sprint performance in competitive swimmers
- PMID: 8933496
- DOI: 10.1097/00005768-199611000-00014
Creatine supplementation does not improve sprint performance in competitive swimmers
Abstract
This study was conducted to examine the effects of creatine (Cr) supplementation on sprint swimming performance and energy metabolism. Twenty highly trained swimmers (9 female, 11 male) were tested for blood ammonia and for blood lactate after the 25-, 50-, and 100-m performance in their best stroke on two occasions 7 d apart. After the first trial, subjects were evenly and randomly assigned to either a creatine (5 g creatine monohydrate 4 times per day for 5 d) or a placebo group (same dosage of a lactose placebo) in a double-blind research design. No significant differences in performance times were observed between trials. Post-exercise blood ammonia concentration decreased in the 50- and 100-m trials in the creatine group and in the 50-m trial in the placebo group. The supplementation period had no effect on post-exercise blood lactate. Therefore, creatine supplementation cannot be considered as an ergogenic aid for sprint performance in highly trained swimmers although adenine nucleotide degradation may be reduced during sprint exercise after 5 d of creatine ingestion.
Similar articles
-
The effects of oral creatine supplementation on performance in single and repeated sprint swimming.J Sports Sci. 1998 Apr;16(3):271-9. doi: 10.1080/026404198366803. J Sports Sci. 1998. PMID: 9596362
-
Effects of creatine supplementation on repetitive sprint performance and body composition in competitive swimmers.Int J Sport Nutr. 1997 Dec;7(4):330-46. doi: 10.1123/ijsn.7.4.330. Int J Sport Nutr. 1997. PMID: 9407259 Clinical Trial.
-
Effect of oral creatine supplementation on single-effort sprint performance in elite swimmers.Int J Sport Nutr. 1996 Sep;6(3):222-33. doi: 10.1123/ijsn.6.3.222. Int J Sport Nutr. 1996. PMID: 8876342 Clinical Trial.
-
Creatine supplementation and swim performance: a brief review.J Sports Sci Med. 2006 Mar 1;5(1):10-24. J Sports Sci Med. 2006. PMID: 24198677 Free PMC article. Review.
-
Creatine supplementation and exercise performance: a brief review.J Sports Sci Med. 2003 Dec 1;2(4):123-32. eCollection 2003 Dec. J Sports Sci Med. 2003. PMID: 24688272 Free PMC article. Review.
Cited by
-
Creatine Supplementation in Women's Health: A Lifespan Perspective.Nutrients. 2021 Mar 8;13(3):877. doi: 10.3390/nu13030877. Nutrients. 2021. PMID: 33800439 Free PMC article. Review.
-
Supplements and Nutritional Interventions to Augment High-Intensity Interval Training Physiological and Performance Adaptations-A Narrative Review.Nutrients. 2020 Jan 31;12(2):390. doi: 10.3390/nu12020390. Nutrients. 2020. PMID: 32024038 Free PMC article. Review.
-
Caffeine and Bicarbonate for Speed. A Meta-Analysis of Legal Supplements Potential for Improving Intense Endurance Exercise Performance.Front Physiol. 2017 May 9;8:240. doi: 10.3389/fphys.2017.00240. eCollection 2017. Front Physiol. 2017. PMID: 28536531 Free PMC article. Review.
-
"Nutraceuticals" in relation to human skeletal muscle and exercise.Am J Physiol Endocrinol Metab. 2017 Apr 1;312(4):E282-E299. doi: 10.1152/ajpendo.00230.2016. Epub 2017 Jan 31. Am J Physiol Endocrinol Metab. 2017. PMID: 28143855 Free PMC article. Review.
-
Performance-enhancing substances in sports: a review of the literature.Sports Med. 2015 Apr;45(4):517-31. doi: 10.1007/s40279-015-0308-9. Sports Med. 2015. PMID: 25663250 Review.
Publication types
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
