The effect of chronic progressive-dose sodium bicarbonate ingestion on CrossFit-like performance: A double-blind, randomized cross-over trial

PloS One
Krzysztof Durkalec-MichalskiJan Jeszka

Abstract

Sodium bicarbonate (SB) has been proposed as an ergogenic aid, as it improves high-intensity and resistance exercise performance. However, no studies have yet investigated SB application in CrossFit. This study examined the effects of chronic, progressive-dose SB ingestion on CrossFit-like performance and aerobic capacity. In a randomized, double-blind, cross-over trial, 21 CrossFit-trained participants were randomly allocated to 2 groups and underwent 2 trials separated by a 14-day washout period. Participants ingested either up to 150 mg∙kg-1 of SB in a progressive-dose regimen or placebo for 10 days. Before and after each trial, Fight Gone Bad (FGB) and incremental cycling (ICT) tests were performed. In order to examine biochemical responses, blood samples were obtained prior to and 3 min after completing each exercise test. No gastrointestinal (GI) side effects were reported during the entire protocol. The overall FGB performance improved under SB by ~6.1% (p<0.001) and it was ~3.1% higher compared to post placebo (PLApost) (p = 0.040). The number of repetitions completed in each round also improved under SB (mean from baseline: +5.8% to +6.4%). Moreover, in ICT, the time to ventilatory threshold (VT) (~8:25 min SBpost vs. ...Continue Reading

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Citations

Jul 25, 2019·International Journal of Environmental Research and Public Health·Rodrigo PoderosoJosé Vilaça-Alves
Jul 8, 2020·International Journal of Environmental Research and Public Health·Anna GogojewiczKrzysztof Durkalec-Michalski
Oct 19, 2019·Journal of the International Society of Sports Nutrition·Sajjad RezaeiAlireza Naderi
Jan 30, 2021·International Journal of Sport Nutrition and Exercise Metabolism·Ricardo Augusto Silva de SouzaBryan Saunders
Apr 23, 2021·Physical Activity and Nutrition·Ramon Souza LinoClarcson Plácido Conceição Dos Santos
Sep 11, 2021·Journal of the International Society of Sports Nutrition·Jozo GrgicBill I Campbell

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Clinical Trials Mentioned

NCT03165357

Software Mentioned

Power
CrossFit
SAS
Bod Pod®
STATISTICA

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