Nitrate Supplementation on Motor Unit Activity

Participants ingested 2 × 70 mL/day shots of concentrate nitrate-rich (\~12.8 mmol/day nitrate) or nitrate-depleted (\~0.08 mmol/day nitrite) beetroot juice (Beet It, James White Drinks Ltd., Ipswich, UK). Two shots were supplemented for 5 days; one each morning (\~9 am) and one each evening (\~9 pm) except for the day of the experimental trial when both shots were taken together 2.5 h before the experimental trial.

2 × 70 mL/day shots of concentrate nitrate-depleted (\~0.08 mmol/day NO3-) beetroot juice. Two shots were supplemented for 5 days; one each morning (\~9 am) and one each evening (\~9 pm) except for the day of the experimental trial when both shots were taken together 2.5 h before the experimental trial.