Extracellular buffer choice influences acid-base responses and gastrointestinal symptoms.
Res Sports Med
; 29(6): 505-516, 2021.
Article
en En
| MEDLINE
| ID: mdl-33715526
ABSTRACT
To compare the bicarbonate kinetics and gastrointestinal (GI) symptom responses between an equal dose of sodium bicarbonate and sodium citrate using delayed-release capsules. Thirteen active males (age 20.5 ± 2.1 y, height 1.8 ± 0.1 m and body mass [BM] 76.5 ± 9.6 kg) consumed either 0.3 g.kg-1 BM sodium bicarbonate, sodium citrate or a placebo, using a double-blind, randomized crossover design. Blood bicarbonate ion (HCO3-) concentration, pH and GI symptoms were measured pre-consumption and every 10 min for 180 min post-consumption. Blood HCO3- concentration (P < 0.001) and pH (P = 0.040) were significantly higher in the sodium bicarbonate condition compared with sodium citrate condition up to 3 h post-consumption. Peak blood HCO3- concentration was significantly higher with the sodium bicarbonate compared with citrate (P < 0.001). Mean GI symptom scores were lower (P = 0.037) for sodium citrate (1.5 ± 1.8 AU) than bicarbonate (2.6 ± 3.1 AU), with considerable inter-individual variability. No GI symptoms were reported following consumption of the placebo. Both substances increase HCO3- values significantly, with sodium bicarbonate causing significantly higher pH and HCO3- values than the same dose of sodium citrate, but results in slightly more severe GI symptoms.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Bicarbonatos
/
Bicarbonato de Sodio
/
Tracto Gastrointestinal
/
Citrato de Sodio
Tipo de estudio:
Clinical_trials
/
Diagnostic_studies
Límite:
Adult
/
Humans
/
Male
Idioma:
En
Revista:
Res Sports Med
Asunto de la revista:
MEDICINA ESPORTIVA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Reino Unido