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The effects of a novel bicarbonate loading protocol on serum bicarbonate concentration: a randomized controlled trial.


ABSTRACT: BACKGROUND:Previous studies have shown that sodium bicarbonate ingestion may enhance intense exercise performance, but may also cause severe gastrointestinal distress. The purpose of this study was to determine whether a modified sodium bicarbonate (SB) ingestion protocol would elevate serum bicarbonate concentration more than previous methods without causing gastrointestinal distress. METHODS:In randomized order, seven (5 men, 2 women) elite middle-distance runners ingested either placebo, Modified SB (600?mg·kg-?1 over 19.5?h), or Acute SB (300?mg·kg-?1) in opaque gelatin capsules. Baseline and post-ingestion blood samples were analyzed for bicarbonate, pH, sodium, hematocrit, and lactate. Repeated measures ANOVA (2 time points ×?3 conditions) were analyzed to determine differences in serum bicarbonate, lactate, sodium, blood pH, and hematocrit. Gastrointestinal distress was assessed via self-report on a Likert scale of 1-10. Simple (condition) and repeated (time) within-participant contrasts were used to determine the location of any statistically significant main and interaction effects (p???0.05). RESULTS:Both Modified SB (7.6?mmol·L-?1, p?

SUBMITTER: Marcus A 

PROVIDER: S-EPMC6751854 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature

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The effects of a novel bicarbonate loading protocol on serum bicarbonate concentration: a randomized controlled trial.

Marcus Adam A   Rossi Amerigo A   Cornwell Andrew A   Hawkins Steven A SA   Khodiguian Nazareth N  

Journal of the International Society of Sports Nutrition 20190918 1


<h4>Background</h4>Previous studies have shown that sodium bicarbonate ingestion may enhance intense exercise performance, but may also cause severe gastrointestinal distress. The purpose of this study was to determine whether a modified sodium bicarbonate (SB) ingestion protocol would elevate serum bicarbonate concentration more than previous methods without causing gastrointestinal distress.<h4>Methods</h4>In randomized order, seven (5 men, 2 women) elite middle-distance runners ingested eithe  ...[more]

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