The Effects of Sodium Phosphate Supplementation on Anaerobic Power in Trained Male Athletes

Tourville, Timothy W.; Brennan, Kevin M.; Connolly, Daniel J.

doi:10.1097/00005768-200105001-00929

Cited by 1 publication

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“…However, measuring exercising intramuscular pH values, both before and after sodium phosphate loading, is necessary so that more definitive comments can be made about whether enhanced buffering capacity from sodium phosphate supplementation impacts repeated-sprint performance. The only other study to examine the effects of sodium phosphate supplementation on sprint performance (a single Wingate 30 s test, with no effect seen) did not report any lactate or pH values (Tourville et al, 2001).…”

Section: Discussionmentioning

confidence: 95%

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Effect of sodium phosphate supplementation on repeated high-intensity cycling efforts

Brewer

Dawson

Wallman

et al. 2014

Journal of Sports Sciences

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Limited research has investigated how sodium phosphate supplementation affects exercise performance typical of athletic competition and whether any effects linger in the short term. This study examined the effect of sodium phosphate supplementation on a cycling protocol consisting of repeated-sprint (4 sets of 6 × 15 s) and time-trial (2 × 5 min) efforts on day 1 and 4 post-loading. Trained male cyclists (VO(2peak) 5.3 L · min⁻¹) were randomised to 6 days of sodium phosphate supplementation (50 mg · kg·fat-free-mass⁻¹ · day⁻¹; n = 7) or placebo (n = 10). Performance was assessed at baseline and 1 and 4 days post-supplementation on an air-braked cycle ergometer. Compared with baseline, the sodium phosphate group recorded significantly improved (P < 0.05) work and mean power output values in both the sprint (baseline, 259 kJ/719 W; day 1, 271 kJ/754 W; day 4, 271 kJ/753 W) and time-trial (baseline, 225 kJ/374 W; day 1, 235 kJ/398 W; day 4, 236 kJ/393 W) aspects of the performance test post-loading. In the placebo group, no differences (P > 0.05) in total work or power output were noted in response to supplementation. In summary, sodium phosphate supplementation improved repeated-sprint and time-trial cycling efforts both 1 and 4 days post-loading in trained cyclists.

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Section: Discussionmentioning

confidence: 95%

“…Notably, only one study has assessed the effect of sodium phosphate loading on sprint performance, with no benefit found for peak or mean power output during a 30 s Wingate test in trained male cyclists (Tourville, Brennan, & Connolly, 2001).…”

Section: Introductionmentioning

confidence: 99%