Abstract
Dietary nitrate supplementation has been reported to enhance explosive-type movements, but our understanding of the ergogenic potential in resistance exercise and women remains understudied. PURPOSE: To investigate if dietary nitrate, provided as nitrate-rich beetroot juice (BR), improved resistance exercise performance compared to nitrate-depleted beetroot juice (PL) in resistance-trained women. METHODS: Eighteen resistance-trained women were assigned in a randomized, double-blind, crossover design to consume PL (0.10 mmol nitrate) and BR (6 mmol of nitrate) 2.5 h prior to performing barbell back squats and bench press at 55% one-repetition max (1RM), 60%1RM, and 65%1RM. Power and velocity were measured via a linear transducer during exercise. All visits were performed during the early follicular phase. RESULTS: A subset of data has been obtained (n=8) and thus our results remain blinded. Squat peak power was recorded in Condition A (55%1RM 690 ± 173 W, 60%1RM 714 ± 187 W, 65%1RM 779 ± 197 W) and Condition B (55%1RM 717 ± 195 W, 60%1RM 749 ± 189 W, 65%1RM 823 ± 183 W). Squat mean power was recorded in Condition A (55%1RM 310 ± 62 W, 60%1RM 318 ± 65 W, 65%1RM 329 ± 61 W) and Condition B (55%1RM 308 ± 61 W, 60%1RM 322 ± 59 W, 65%1RM 315 ± 72 W). Bench peak power was recorded in Condition A (55%1RM 305 ± 108.93 W, 60%1RM 292 ± 100 W, 65%1RM 293 ± 84 W) and Condition B (55%1RM 310 ± 107 W, 60%1RM 302 ± 91 W, 65%1RM 302 ± 90 W). Bench mean power was recorded in Condition A (55%1RM 181 ± 55 W, 60%1RM 185 ± 52 W, 65%1RM 182 ± 50 W) and Condition B (55%1RM 178 ± 46 W, 60%1RM 190 ± 51 W, 65%1RM 182 ± 50 W). CONCLUSION: These data provide insight for dietary nitrate as an ergogenic aid to enhance resistance exercise performance in resistance-trained women.
Recommended Citation
Brennan, Sydney N.; Gerardo, Raymond T.; Molnar, Trevor J.; Foster, Justin M.; Tran, Ryan; Sottile, Christopher B.; Egiazarian, Michael; Geppert, Kyle S.; Ballhagen, Abigail F.; Pennell, Adam; and Tan, Rachel
(2024)
"Effect of Acute Beetroot Juice Supplementation on Power Output during Resistance Exercise in Resistance-Trained Women,"
International Journal of Exercise Science: Conference Proceedings: Vol. 14:
Iss.
4, Article 15.
Available at:
https://digitalcommons.wku.edu/ijesab/vol14/iss4/15