The effects of nitrate ingestion on high-intensity endurance time-trial performance: A systematic review and meta-analysis.

Subgroup analysis on the effect of nitrate supplementation revealed a small, borderline significant effect in favour of chronic nitrate intervention (Hedges'g = 0.30, 95% CI -0.00 to 0.59, Z = 1.94, p = 0.05), but a trivial non-significant effect in favour of acute nitrate intervention (Hedges'g = 0.10, 95% CI -0.08 to 0.28, Z = 1.11, p = 0.27).

also in 11,409 other papers