High Concentrated Beetroot Juice Supplement Improves Cycling Power, VO2, Time to Exhaustion, Heart Rate and Anaerobic Threshold in Trained Cyclists

Gregory Palevo

Gregory Palevo, PhD

Assistant Professor Exercise Science

College of Education

Department of Kinesiology

AACVPR Fellow

ACSM Exercise Specialist Certified

University of North Georgia

Dahlonega, Georgia

Abstract

Palevo G, Williams N, Harp A, Barring E, Mize LB. High Concentrated Beetroot Juice Supplement Improves Cycling Power, VO2, Time to Exhaustion, Heart Rate, and Anaerobic Threshold in Trained Cyclists JEPonline 2019;22(4):39-45. The purpose of the study was to determine the effects of a single dose of a high concentrate dietary nitric oxide (NO3-) on cycling power, VO2,time to exhaustion, heart rate, and anaerobic threshold in trained cyclists. Twenty-one male and female cyclists (16 males and 5 females) participated in a double-blind, randomized study in which the subjects consumed either a single-dose (5 ounces) of a low dose organic beetroot juice (placebo) or a highly concentrated beetroot endurance superfood 2 hrs before performing a volitional maximal cycling test on a stationary trainer. The subjects performed a baseline cycling test to volitional fatigue following a ramped protocol. Compared to the placebo group, the intervention group increased power in watts 5.97%; VO2 peak 3.57%; time to exhaustion 3.23%; heart rate threshold at 210 watts 3.77%; and anaerobic threshold 6.63%. The outcomes from this study are clear. A single-dose of a highly concentrated nitric oxide dietary supplement 2 hrs before intensive cycling improved peak power (watts), increased time to exhaustion, increased VO2 peak, higher anaerobic threshold, and a reduced heart rate at sub-anaerobic threshold.

Key Words: Beetroot juice, Cycling power, VO2 peak

 

High Concentrated Beetroot Juice Supplement Improves Cycling Power, VO2, Time to Exhaustion, Heart Rate and Anaerobic Threshold in Trained Cyclists

Palevo G, Williams N, Harp A, Barring E, Mize LB. High Concentrated Beetroot Juice Supplement Improves Cycling Power, VO2, Time to Exhaustion, Heart Rate, and Anaerobic Threshold in Trained Cyclists JEPonline 2019;22(4):39-45. The purpose of the study was to determine the effects of a single dose of a high concentrate dietary nitric oxide (NO3-) on cycling power, VO2,time to exhaustion, heart rate, and anaerobic threshold in trained cyclists. Twenty-one male and female cyclists (16 males and 5 females) participated in a double-blind, randomized study in which the subjects consumed either a single-dose (5 ounces) of a low dose organic beetroot juice (placebo) or a highly concentrated beetroot endurance superfood 2 hrs before performing a volitional maximal cycling test on a stationary trainer. The subjects performed a baseline cycling test to volitional fatigue following a ramped protocol. Compared to the placebo group, the intervention group increased power in watts 5.97%; VO2 peak 3.57%; time to exhaustion 3.23%; heart rate threshold at 210 watts 3.77%; and anaerobic threshold 6.63%. The outcomes from this study are clear. A single-dose of a highly concentrated nitric oxide dietary supplement 2 hrs before intensive cycling improved peak power (watts), increased time to exhaustion, increased VO2 peak, higher anaerobic threshold, and a reduced heart rate at sub-anaerobic threshold.

Key Words: Beetroot juice, Cycling power, VO2 peak