α-Glycerophosphorylcholine and the Effects on Anaerobic Indices
Rickard, Alex J.
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The purpose of the investigation was to examine the acute effects of α-glycerophosphorylcholine (α-GPC) ingestion on anaerobic performance. This study was double-blind, placebo controlled, crossover design, with a one-week wash-out period—two testing sessions. One hour prior to the testing, subjects ingested a solution—placebo or α-GPC. Subjects (N=17) completed three assessments of anaerobic performance: the counter movement jump (CMJ), 40-yd dash, and 30-second Wingate anaerobic test (WAnT). The best of three attempts of the CMJ and 40-yd were used in analysis. They completed only one trial on the 30-second WAnT. Results showed a significant difference between placebo (68.5±11.5 cm) and α-GPC (69.8±11.5 cm) for the CMJ performance. A trend towards significance (p=.069) was found for the 30-second WAnT minimum power under the α-GPC condition. No other differences were noted. Alpha-GPC may be an ergogenic aid; however, more research is needed to fully elucidate its effectiveness as an ergogenic aid.