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Related Experiment Videos

Creatine supplementation and swimming performance.

N M Leenders1, D R Lamb, T E Nelson

  • 1Sport and Exercise Sciences Section, School of Physical Activity and Environmental Services, The Ohio State University, Columbus, OH 43210, USA.

International Journal of Sport Nutrition
|September 8, 1999
PubMed
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Creatine supplementation improved swimming speed in male university swimmers during repeated 50-meter interval sets. However, creatine did not enhance performance in shorter 25-yard sets or for female swimmers.

Area of Science:

  • Sports Science
  • Exercise Physiology
  • Nutritional Supplementation

Background:

  • Creatine supplementation is widely used in sports for enhancing performance.
  • Its effects on swimming velocity, particularly in university-level athletes across different interval types, require further investigation.

Purpose of the Study:

  • To investigate the effects of oral creatine (CR) supplementation versus a placebo (PL) on maintaining swimming velocity in university swimmers.
  • To assess performance differences between genders and across varying interval durations (6x50m and 10x25yd).

Main Methods:

  • A randomized, double-blind, placebo-controlled study was conducted over 4 weeks.
  • Fourteen female and 18 male swimmers participated, with a 2-week baseline period followed by 2 weeks of either CR or PL supplementation.

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  • Swimming velocity was measured during 6x50m and 10x25yd interval sets.

    • Main Results:

    • Creatine supplementation significantly improved mean overall swimming velocity in the 6x50m interval for male swimmers after 2 weeks.
    • No significant effects of creatine were observed for female swimmers in the 6x50m sets.
    • Neither male nor female swimmers showed performance improvements in the 10x25yd interval sets with creatine supplementation.

    Conclusions:

    • Oral creatine supplementation appears to enhance the ability of male university swimmers to maintain higher swimming velocities during repeated, longer interval sets (approx. 30 seconds per swim).
    • Creatine was not found to be effective for improving swimming velocity in female swimmers or in shorter interval sets (approx. 10-15 seconds per swim) for either gender.