Research Paper Volume 11, Issue 10 pp 3315—3332

Effect of chronic nitrate and citrulline supplementation on vascular function and exercise performance in older individuals

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Figure 2. Heart rate and oxygen consumption during the cycling incremental test before and after one month of placebo or nitrate and citrulline intake in older adults. HR, heart rate; VO2, oxygen consumption; N+C, nitrate + citrulline; PLA, placebo; PRE, measure before the supplementation period; POST, measure after the supplementation period; 25%; 50%; 75%; 100%, 25%, 50%, 75% and 100%, of the duration of the PRE test (i.e. isowatt).