Presentation Type

Poster

Presentation Type

Submission

Keywords

beetroot, ergogenic aid, dietary nitrate, nitric oxide, resistance training

Department

Sports Medicine

Major

Sports Medicine

Abstract

Dietary nitrate supplementation, administered as beetroot juice (BR), enhances powerful and fast contractions; however, whether BR impacts resistance exercise performance and if dosing influences the efficacy of nitrate are underdeveloped. The purpose of this study is to assess whether BR supplementation influences neuromuscular performance (muscle power and speed), in healthy, recreationally active males. In a double-blind, randomized crossover design, 15 males will be randomly allocated to consume 4 x 70 ml of BR over four conditions: (1) 4 x 70 ml of nitrate-depleted BR for placebo (PL); (2) 1 x 70 ml of nitrate-rich BR and 3 x 70 ml of PL for a low nitrate dose (BR-LOW); (3) 2 x 70 ml of nitrate-rich BR and 2 x 70 ml of PL for a moderate nitrate dose (BR-MOD); and (4) 4 x 70 ml of nitrate-rich BR for an elevated nitrate dose (BR-HIGH). Participants will report to the laboratory 5 times over 5-wk. Participants will complete a 1 repetition max (1RM) and a familiarization to the exercise protocol. On experimental visits, participants will complete a warm up and then a protocol to assess explosive performance using a linear transducer and force plate during vertical countermovement jumps, and then back squat and bench press, in a randomized order. A resting blood sample will be drawn for the determination of plasma nitrate and nitrite concentrations. These data could provide insight for dietary nitrate as an ergogenic aid and inform both supplementation guidelines and recommendations for enhancing resistance training performance in men.

Faculty Mentor

Rachel Tan

Funding Source or Research Program

Academic Year Undergraduate Research Initiative

Location

Waves Cafeteria

Start Date

24-3-2023 2:00 PM

End Date

24-3-2023 4:00 PM

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Mar 24th, 2:00 PM Mar 24th, 4:00 PM

The effect of beetroot juice supplementation dose on neuromuscular performance during resistance exercise

Waves Cafeteria

Dietary nitrate supplementation, administered as beetroot juice (BR), enhances powerful and fast contractions; however, whether BR impacts resistance exercise performance and if dosing influences the efficacy of nitrate are underdeveloped. The purpose of this study is to assess whether BR supplementation influences neuromuscular performance (muscle power and speed), in healthy, recreationally active males. In a double-blind, randomized crossover design, 15 males will be randomly allocated to consume 4 x 70 ml of BR over four conditions: (1) 4 x 70 ml of nitrate-depleted BR for placebo (PL); (2) 1 x 70 ml of nitrate-rich BR and 3 x 70 ml of PL for a low nitrate dose (BR-LOW); (3) 2 x 70 ml of nitrate-rich BR and 2 x 70 ml of PL for a moderate nitrate dose (BR-MOD); and (4) 4 x 70 ml of nitrate-rich BR for an elevated nitrate dose (BR-HIGH). Participants will report to the laboratory 5 times over 5-wk. Participants will complete a 1 repetition max (1RM) and a familiarization to the exercise protocol. On experimental visits, participants will complete a warm up and then a protocol to assess explosive performance using a linear transducer and force plate during vertical countermovement jumps, and then back squat and bench press, in a randomized order. A resting blood sample will be drawn for the determination of plasma nitrate and nitrite concentrations. These data could provide insight for dietary nitrate as an ergogenic aid and inform both supplementation guidelines and recommendations for enhancing resistance training performance in men.

 

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