Authors: Adam Parker, Josh Gordon, Aaron Thornton, John Lubker, Michelle Bartlett, Ralf Jäger, Martin Purpura, Mike Bird, Jonathan Oliver, Sunday Simbo, Chris Rasmussen, Richard B. Kreider
Institutions: West Texas A&M University; Increnovo LLC; Texas A&M University
Source: Journal of the International Society of Sports Nutrition. Published September 15, 2010; 7(Suppl 1):P2.
Background: Phosphatidylserine (PS) has been shown to help reduce stress and boost performance in athletes. This study tested its effects on cognitive function before and after resistance training in 18 young males.
Methods: Participants took 400 mg of PS or a placebo for 14 days. They then performed a workout and completed a serial subtraction test (SST) before and after exercise. The SST requires participants to subtract a number (usually 7) from a starting number repeatedly, testing their cognitive processing speed and accuracy.
Results: PS significantly improved cognitive performance before exercise, reducing calculation time and errors. However, after exercise, there was no noticeable difference compared to the placebo, indicating that PS is not useful when fatigued.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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