Nitrates and other nitric oxide supporting ingredients are popular components of many sports nutrition supplements. What can they do for your weight room workout? A study published in the Journal of Strength and Conditioning Research put nitrates to the test using a dozen recreationally active men on the bench press.
Some subjects were given 400 mg of nitrate while others got a placebo before performing 3 sets to failure using 60% of their one rep max. All got 2 minutes of rest between sets. Even though there were no real differences in ratings of perceived exertion or lactate buildup, nitrate supplementing subjects did significantly more reps to failure and lifted a greater total amount of weight.