The Influence of Sodium Phosphate Supplementation on VO_2max, Serum 2,3-diphosphoglycerate Level and Heart Rate in Off-road Cyclists

Abstract

The main objective of the work was to evaluate the influence of a six day supplementation with sodium phosphate on circulatory and pulmonary variables, the level of 2,

Effects of sodium phosphate and caffeine ingestion on repeated-sprint ability in male athletes

“…Increased 2,3-DPG concentrations after SP supplementation has also been associated with improved aerobic metabolism, as evidenced by increases inVO 2 max , 13,23,24 with Czuba et al 13 reporting a moderate correlation between these two measures (r = 0.47, p = 0.01). However, improvement in exercise performance after SP supplementation has also not always been associated with changes in 2,3-DPG concentration, [12][13][14] with no significant differences found for this measure here.…”

“…Numerous mechanisms have been proposed to explain the ergogenic effects of SP supplementation. Briefly, these are increases in (a) 2,3-Diphosphoglycerate (DPG) in red blood cells, promoting oxygen unloading from haemoglobin to the tissues; 14 (b) myocardial efficiency, which may increase stroke volume; 12 (c) hydrogen ion buffering ability; 14 (d) adenosine triphosphate (ATP) and phosphocreatine (PCr) resynthesis due to a larger energy (phosphate) pool; 14 and (e) activation of rate-limiting constituents of the glycolytic and Krebs cycles. 15 Of relevance, all these mechanisms may potentially result in improved RSA, but this has not yet been investigated.…”

Effects of sodium phosphate and beetroot juice supplementation on repeated-sprint ability in females

“…Furthermore, best sprints were 0.13-0.23 and 0.15-0.20 s faster (~6 % improvement; p < 0.01) after SP compared with placebo and BJ, respectively, for all sets (d = −0.54 to −0.89). While some studies have found no benefit of SP on exercise performance (Brennan and Connolly 2001;Buck et al 2014;Brewer et al 2014;West et al 2012), others have reported improved endurance exercise performance (Folland et al 2008;Kreider et al 1992) and aerobic capacity of 3.5-12 % (Brewer et al 2013;Cade et al 1984;Czuba et al 2008Czuba et al , 2009Kreider et al 1990Kreider et al , 1992Stewart et al 1990) following 3.6-4 g or 50 mg kg −1 of fat free mass (FFM) of SP ingested each day over a 3-to 6-day loading period. Furthermore, Brewer et al (2014) recently reported improved sprinting and time-trial efforts whilst cycling following SP loading.…”

Efecto ergogénico de la ingesta de fosfato sódico en sujetos físicamente activos / Ergogenic Effect of Sodium Phosphate Intake in Physically Active Subjects

“…En el ejercicio físico, estas sales juegan un rol muy importante, ya que están involucradas en los tres sistemas de obtención de la energía. Los fosfatos forman parte del ATP y la fosfocreatina (CP), que son los sustratos básicos en los sistemas de fosfágenos de alta energía; también están involucrados en la glucólisis anaeróbica, amortiguando el efecto del ácido láctico producido en ejercicios de resistencia a la velocidad y participan activamente en el sistema de obtención de la energía por vía aeróbica (Czuba, Zając, Poprzecki y Cholewa, 2008;Williams, 1998). Kreider, Miller, Williams, Somma y Nasser (1990) examinan diferentes hipótesis por las cuales los suplementos de fosfato en deportistas podrían afectar el rendimiento.…”