Effects of sodium bicarbonate, caffeine, and their combination on repeated 200-m freestyle performance. – Cost Effective Supplements

Effects of sodium bicarbonate, caffeine, and their combination on repeated 200-m freestyle performance.

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Link to full study

http://www.ncbi.nlm.nih.gov/pubmed/18458356

Conclusion of this study

This is likely because of the lower blood pH and slower recovery of blood HCO(3) post-TT1 after C ingestion. These findings suggest that the ergogenic benefit of taking C alone for repeated 200-m swimming performance appears limited. When combined with NaHCO(3), however, its negative impact on repeated maximal exercise performance is reversed.