January 2017


Lindsay B. Baker, PhD



SSE #60

Caffeine and Exercise Performance

Moderate doses of caffeine ingested 1 h prior to exercise appears to enhance performance during short term high intense cycling lasting ~ 5 min. in the laboratory and in simulated 1500-m race time.

Terry E. Graham, Ph.D. and Lawrence L. Spriet, Ph.D.

June 2006

Topics: Supplements, Training & Performance

SSE #61

Carbohydrates, Branched-Chain Amino Acids and Endurance: The Central Fatigue Hypothesis

The central fatigue hypothesis suggests that increased brain serotonin (5-HT) can cause a deterioration in sport and exercise performance. Whether branched-chain amino acid supplementation can effect performance remains uncertain.

J. Mark Davis, Ph.D.

June 2006

Topics: Carbohydrate, Supplements

SSE #91

Scientifically Debatable: Is Creatine Worth Its Weight

Creatine is a commonly used supplement that could potentially benefit short high-intensity exercise or improve response to resistance exercise training. However, the performance and metabolic response to creatine ingestion is varied. Those starting with low muscle creatine levels are more likely to but don't always have the best response. Since creatine supplementation boosts performance in some individuals and not others, this could be construed as unfair advantage. Many questions remain about the value of creatine supplementation for performance of various sports and about how much and when to use creatine - if it should be used at all. Evidence suggests that performance benefits resulting from creatine ingestion are predominantly observed during multiple tests lasting between 30 to 90 seconds. Also, when consumed in moderate doses, there seems to be no adverse effects of creatine supplementation in healthy adults.

Eric S. Rawson, Ph.D., Priscilla M. Clarkson, Ph.D.

September 2006

Topics: Supplements

SSE #94

Creatine, Carbs, and Fluids: How Important in Soccer Nutrition?

There is no persuasive evidence that creatine supplementation is beneficial to soccer play. Because most of the running in soccer is at less than maximal speed, it is unlikely that creatine supplementation would have any important benefits. However, adequate dietary carbohydrate in the days and hours before strenuous training and competition is critical to maintaining adequate glycogen level in the muscles. Also, even slight dehydration can be detrimental to impair performance in soccer.

Donald T. Kirkendall, Ph.D., FACSM

September 2006

Topics: Carbohydrate, Supplements

SSE #96

Herbs and Athletes

Although there is insufficient high-quality research to support the claims, there are many herbs marketed to help athletes achieve their goals. More research on herbs, health, and athletic performance is needed to better assess efficacy and safety. This article includes a table that highlights many of the herbs athletes may be interested in using with claimed benefits and examples of safety concerns. Sports professionals working with athletes can serve as sound resources for helping athletes find reputable information about herbs.

Susan Kundrat, MS, RD, LDN

October 2006

Topics: Supplements

SSE #0

SSE #110: Dietary Nitrate: The New Magic Bullet?

Nitric oxide (NO) is an important physiological signaling molecule that can modulate skeletal muscle function through its role in the regulation of blood flow, muscle contractility, glucose and calcium homeostasis, and mitochondrial respiration and biogenesis.

Andrew M. Jones, PhD

January 2013

Topics: Training & Performance, Supplements

SSE #130

James P. Morton

June 2014

Topics: Supplements

SSE #137

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