title: Does sodium-bicarbonate ingestion improve simulated judo performance?
abstract: The aim of the present study was to investigate whether preexercise sodium-bicarbonate ingestion improves judo-related performance. The study used 2 different protocols to evaluate performance: 3 bouts of a specific judo test (n = 9) and 4 bouts of the Wingate test for upper limbs (n = 14). In both protocols athletes ingested 0.3 g/kg of sodium bicarbonate or placebo 2 h before the tests. Blood samples were collected to determine lactate level, and levels of perceived exertion were measured throughout the trials. The study used a double-blind, counterbalanced, crossover design. Ingestion of sodium bicarbonate improved performance in Bouts 2 and 3 of Protocol 1 (P < 0.05), mean power in Bouts 3 and 4 of Protocol 2 (P < 0.05), and peak power in Bout 4 of Protocol 2 (P < 0.05). Ingestion of bicarbonate increased lactate concentration in Protocol 1 (P < 0.05) but not in Protocol 2. Ratings of perceived exertion did not differ between treatments. In conclusion, sodium bicarbonate improves judo-related performance and increases blood lactate concentration but has no effect on perceived exertion.
authors.affiliation: School of Physical Education and Sport, University of Sao Paulo, Brazil.
authors.forename: Guilherme Giannini
authors.initials: GG
authors.lastname: Artioli
authors.forename: Bruno
authors.initials: B
authors.lastname: Gualano
authors.forename: Desire Ferreira
authors.initials: DF
authors.lastname: Coelho
authors.forename: Fabiana Braga
authors.initials: FB
authors.lastname: Benatti
authors.forename: Alessandra Whyte
authors.initials: AW
authors.lastname: Gailey
authors.forename: Antonio Herbert
authors.initials: AH
authors.lastname: Lancha
mesh_terms: D000136:Acid-Base Equilibrium / Q000187:drug effects*; D000328:Adult; D000471:Alkalosis / Q000517:prevention & control; D018592:Cross-Over Studies; D004311:Double-Blind Method; D006801:Humans; D007773:Lactates / Q000097:blood*; D016139:Martial Arts / Q000502:physiology*; D017693:Sodium Bicarbonate / Q000008:administration & dosage*; D013997:Time Factors
chemical_list: D007773:Lactates; D017693:Sodium Bicarbonate