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- W4387563363 abstract "Dietary nitrate (NO3-) is a widely used supplement purported to provide beneficial effects during exercise. Most studies to date include predominantly males. Therefore, the present study aimed to investigate if there is a sex-dependent effect of NO3- supplementation on exercise outcomes. We hypothesised that both sexes would exhibit improvements in exercise economy and exercise capacity following NO3- supplementation, but males would benefit to a greater extent. In a double-blind, randomized, crossover study, twelve females (24±4 years) and fourteen males (23±4 years) completed two 4-minute moderate-intensity (MOD) exercise bouts followed by a time-to-exhaustion (TTE) task after following 3-days of NO3- supplementation (BRJ) or NO3--depleted placebo (PL). Females were tested during the early follicular phase of the menstrual cycle. During MOD exercise, BRJ reduced the steady-state VO2 by ~5% in males (M: ∆ -87 ± 115 mL.min-1; p < 0.05) but not in females (F: ∆ 6 ± 195 mL.min-1). Similarly, BRJ extended TTE by ~15% in males (p < 0.05) but not in females. Dietary NO3- supplementation improved exercise economy during moderate-intensity exercise and exercise capacity during severe-intensity TTE in males but not in females. These differences could be related to estrogen levels, antioxidant capacity, nitrate reducing bacteria or a variety of know physiologic differences such as skeletal muscle calcium handling, and/or fiber type. Overall, our data suggests the ergogenic benefits of oral NO3- supplementation found in studies predominantly on male subjects may not be applicable to females." @default.
- W4387563363 created "2023-10-13" @default.
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- W4387563363 date "2023-10-12" @default.
- W4387563363 modified "2023-10-13" @default.
- W4387563363 title "Sex Differences in the Effects of Inorganic Nitrate Supplementation On Exercise Economy and Endurance Capacity in Healthy Young Adults" @default.
- W4387563363 doi "https://doi.org/10.1152/japplphysiol.00220.2023" @default.
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- W4387563363 hasPublicationYear "2023" @default.
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