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KNO3 but not KCl (8 mmol) supplementation elevates systemic nitrate and nitrite levels in healthy female volunteers. The effects of KNO3 or KCl ingestion 3 h prior on circulating plasma (A, B), salivary (C, D), and urinary (E, F) nitrate and nitrite levels. Data are expressed as mean ±SEM of n=12. Significance shown for Bonferroni post hoc tests between groups as ⁎⁎P<0.01 and ⁎⁎⁎P<0.001 following one-way ANOVA.
