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The Effect of Acute and Chronic Beetroot Juice Supplementation on Submaximal Running and 1500 m Running Performance in Elite Distance Runners

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Title: The Effect of Acute and Chronic Beetroot Juice Supplementation on Submaximal Running and 1500 m Running Performance in Elite Distance Runners
Author: Boorsma, Robert Kyle
Department: Department of Human Health and Nutritional Sciences
Program: Human Health and Nutritional Sciences
Advisor: Spriet, Lawrence
Abstract: This thesis examined the effects of acute and chronic beetroot (BR) supplementation on VO2 during submaximal treadmill running and 1500 m time-trial performance in well-trained runners. Ten elite male middle distance runners (VO2 peak, 80 + 5 ml/kg/min) participated in a randomized, double–blind, crossover design, and supplemented with 210 ml of BR or a nitrate-free BR placebo (PL) for 8 days separated by at least one week. On days 1 (acute) and 8 (chronic), subjects completed a submaximal treadmill run and 1500 m time-trial on an indoor 200 m track. Acute and chronic BR supplementation had no effect on VO2 while running at 50, 65 and 80% VO2 peak, despite large and significant increases in plasma nitrate. The time to complete the 1500 m run was also unaffected by acute or chronic BR. In summary, elite distance runners did not benefit from acute or chronic BR supplementation.
URI: http://hdl.handle.net/10214/7492
Date: 2013-08
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