The newest edition of the Swimming Science Research Review was released yesterday. The theme of this edition is motor learning, make sure to order your copy to stay current with the latest research on dry-land. Below are the tables of contents of this edition.
Order today and find the answer to the following questions:
- Do Elite Swimmers have Suboptimal Nutrition?
- Does Protein Decrease Soreness?
- What we Know about the Low Carb Diet?
- Does a Moderately Low Carb Diet Decrease Swimming Performance?
- Does Multivitamin Supplementation Increase Swimming Performance?
- Do Medium Chain Fatty Acids Enhance Performance?
- Does Acute Carbohydrate Consumption Improve Test Set Performance?
- Does Doping Enhance Sports Performance?
- Does Probiotic Yogurt Decreases Illness Length?
- Are Youth Swimmers Mineral Deficient?
- Does a Carbohydrate Drink Improve Performance in those with Lower Body Mass ?
- Does L-carnitine Decrease Lactate Accumulation?
- Do Bite-Aligning Mouthpieces Improve Power?
- Are Youth Swimmers Deficient in Vitamin A, Fiber, and Selenium?
- Does Sodium Bicarbonate Improves Repeated Sprint Performance>
- Does Energy Drink Consumption Increase Lactate?
- Does Dehydration Increase Cramps?
- Does High Swimming Training Intensity Alter Iron Status?
Also, remember to stay current and on top of the literature for the health and benefit of your swimmers! If you're interested in the SSRR, Order your copy today for $10!
Take Home Points on Acute Creatine Doesn't Improve Swimming Performance
Creatine is a popular ergogenic aid in all spots. Physiologically, phosphocreatine can limitshort-duration, high-intensity exercise. For swimming, this potentially increases repeated sprint performance and high-intensity swimming duration.
We've written previously about the positive effects of creatine, mostly extrapolating research from other sports, as swimming does not receive the bulk of the exercise science research. This makes swimming specific research essential for prescription to swimmers.
Mendes (2004) had eighteen competitive swimmers (M=12, F=6) undergo a double-blind, placebo-controlled study. For the first week, the swimmers underwent a biochemical evaluation. After this, the group was divided randomly into two, receiving either creatine or placebo.
The creatine group (received four doses of 5.0 g creatine and carbohydrate per day). The placebo received four doses of 20.0 g carbohydrates per day.
The swimmers were tested in three types of exercise:
There were no significant differences in any of the performance tests. Approximately 50% of the creatine consumed was excreted in the urine.
Overall, body water weight increases in this study, with a speculated increase in muscular creatine. These findings question the use of creatine, but also warrant longer investigations, as an acute increase in body weight may alter biomechanics and cancel out any potential benefits.
These results conflict some previous studies and conclusions. If using creatine, perhaps longer dosing periods are needed for body adaptations.
- Mendes RR, Pires I, Oliveira A, Tirapegui J. Effects of creatine supplementation on the performance and body composition of competitive swimmers. J Nutr Biochem. 2004 Aug;15(8):473-8.
By Dr. G. John Mullen received his Doctorate in Physical Therapy from the University of Southern California and a Bachelor of Science of Health from Purdue University where he swam collegiately. He is the owner of COR, Strength Coach Consultant, Creator of the Swimmer's Shoulder System, and chief editor of the Swimming Science Research Review.