The effects of combining dietary nitrate and pomegranate supplementation on resistance exercise performance

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, provided as beetroot juice (BR), can improve explosive exercise performance via increased nitric oxide (NO) bioavailability but whether co-ingesting BR with another antioxidant to induce synergistic effects has yet to be explored. The purpose of this study was to assess whether co-ingesting BR and pomegranate powder enhanced power, force, and velocity during resistance exercise, in healthy, recreationally active males. In a double-blind, randomized crossover design, 15 males were randomly allocated to three conditions to consume: (1) 2 x 70 ml of nitrate-depleted beetroot juice and empty gelatin capsules for placebo (PL+CAP); (2) 2 x 70 ml of nitrate-rich beetroot juice and CAP for BR only (BR+CAP); and (3) 2 x 70 ml of BR and pomegranate powder (POM) for co-ingestion of supplements (BR+POM). Participants reported to the laboratory 5 times over 5-wk. Participants completed a 1 repetition max (1RM) and a familiarization to the exercise protocol. On experimental visits, participants completed a warm up and then a protocol to assess explosive performance using a linear transducer and force plate during vertical countermovement jumps, kneeling explosive push-ups, and back squat. A resting blood sample was drawn for the determination of plasma nitrate and nitrite concentrations. A one way repeated measures ANOVA was used to assess differences in performance markers between conditions. These data have implications for supplementation guidelines and recommendations for enhancing resistance training performance in males.

Faculty Mentor

Dr. Rachel Tan

Funding Source or Research Program

Summer Undergraduate Research Program, Undergraduate Research Fellowship

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 effects of combining dietary nitrate and pomegranate supplementation on resistance exercise performance

Waves Cafeteria

Dietary nitrate supplementation, provided as beetroot juice (BR), can improve explosive exercise performance via increased nitric oxide (NO) bioavailability but whether co-ingesting BR with another antioxidant to induce synergistic effects has yet to be explored. The purpose of this study was to assess whether co-ingesting BR and pomegranate powder enhanced power, force, and velocity during resistance exercise, in healthy, recreationally active males. In a double-blind, randomized crossover design, 15 males were randomly allocated to three conditions to consume: (1) 2 x 70 ml of nitrate-depleted beetroot juice and empty gelatin capsules for placebo (PL+CAP); (2) 2 x 70 ml of nitrate-rich beetroot juice and CAP for BR only (BR+CAP); and (3) 2 x 70 ml of BR and pomegranate powder (POM) for co-ingestion of supplements (BR+POM). Participants reported to the laboratory 5 times over 5-wk. Participants completed a 1 repetition max (1RM) and a familiarization to the exercise protocol. On experimental visits, participants completed a warm up and then a protocol to assess explosive performance using a linear transducer and force plate during vertical countermovement jumps, kneeling explosive push-ups, and back squat. A resting blood sample was drawn for the determination of plasma nitrate and nitrite concentrations. A one way repeated measures ANOVA was used to assess differences in performance markers between conditions. These data have implications for supplementation guidelines and recommendations for enhancing resistance training performance in males.