Nutritional Ergogenic Aids in Combat Sports: A Systematic Review and Meta-Analysis.

Nutrients · 2022 · PMC9268044 · PMID 35807770

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slightly non-significantno p-value reported

The use of 6–12 mmol of NO 3 − contained in beetroot juice supplements produced significant improvements in time to exhaustion in a 5–30 min cycling race, but slightly non-significant improvements in time trial or graded-exercise performance [ 80 ].

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