Effects of Beetroot Juice on Exercise (2013)

Overview

• A study in the Journal of Applied Physiology, suggests that beetroot juice decreases blood pressure and may positively impact performance in exercise.
• First study to investigate a dose-response relationship between beetroot and exercise.
• Purpose of the study:

1. Characterize plasma, pharmacokinetics, and blood pressure after ingestion of 3 different amounts of beetroot.
2. Investigate dose-response relationship between beetroot/plasma intake and response to exercise.

• Tested their hypothesis with two conditions: Moderate exercise and Rigorous exercise.
• Results: 

1. "Plasma and nitrate concentration increased dose-dependent up to 16.8 mmol NO3− with a reduction in blood pressure up to 8.4mmol" (Wylie et al., 2013).
2. A dose of 16.8 mmol was needed to elicit a reduction in oxygen cost of moderate exercise.
3. Improved time-to-task failure during severe exercise after ingestion of 8.4 mmol NO3−, with no added benefits with ingestion of 16.8 mmol. 

(Source: The Altitude Centre)

Application

Beetroot is known for its effects like in the above study. Basically, it improves bodily functions, including blood regulation resulting in improved usage of oxygen to muscles.

This is why you may see ingredients such as, beetroot extract, in pre-workouts.