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The Effect of Beetroot Supplementation on High-Intensity Functional Training Performance.

Sean M Collins¹, Danielle Kearns¹

¹Exercise Physiology Department, University of Lynchburg, Lynchburg, VA, USA.

International Journal of Exercise Science

|June 9, 2020

Summary

Beetroot supplementation did not significantly improve high-intensity functional training performance in this study. The intense, short duration of the workout may have limited the benefits of beetroot nitrate on athletic performance.

Keywords:

Dietary nitrates HIIT nitrate supplementation

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Area of Science:

Exercise Physiology
Nutritional Science
Sports Performance

Background:

Nitrate supplementation (NO₃^-) is known to enhance athletic performance in various activities.
Beetroot supplementation (BR) is a popular source of dietary nitrate.

Purpose of the Study:

To investigate the effects of beetroot supplementation on high-intensity functional training (HIFT) performance.
To determine if BR impacts completion time, blood lactate, RPE, and heart rate during HIFT.

Main Methods:

Twenty-four HIFT participants completed a benchmark test under control and beetroot supplementation conditions.
Supplementation involved consuming 70 mL of beetroot nitrate 2 hours prior to testing.
Measurements included time to completion, blood lactate, RPE, and heart rate.

Main Results:

No significant differences were observed in time to completion between control and beetroot conditions.
Post-exercise blood lactate levels and rating of perceived exertion (RPE) were not significantly different.
Heart rate responses also showed no significant variations between the two conditions.

Conclusions:

Beetroot supplementation did not enhance performance in this specific high-intensity functional training benchmark test.
The mixed anaerobic and aerobic demands, coupled with short duration, might have influenced the results.
Further research is needed to understand nitrate's effects on diverse training modalities.