Effects of 2 days sodium bicarbonate loading on simulated football performance test
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AbstractThere is well-documented researches exist on sodium bicarbonate, however, not many studies have examined the effectiveness of this ergogenic aids during prolonged exercises also including a sport specific performance test. The primary purpose of this study was to determine whether a short-term (2 days) supplementation of sodium bicarbonate (NaHCO3) enhances repeated sprint performance and time to exhaustion in a simulated football performance test (Loughborough Intermittent Sprint Test) which lasts for 90 minutes. Seven healthy males (Mean age = 24 ± 1.6 years and predicted mean O2max = 49.4 ml kg-1 min-1) participated in this experimental study using a double-blind, randomized, crossover study design was used. All subjects completed three conditions, except the control condition, the others included test drinks followed by a 5-day washout period between these two conditions: 1) control (no drinks), 2) placebo/drug (Pl; NaCl; 0.045 g.kg-1, Sb; 0,5g/kg bw NaHCO3), and 3) same as 2nd condition. During each condition, sprint times, exhaustion times and rating perceived exertion (RPE) were assessed. In addition to this, before the test day, gastro intestinal (GI) distress questionnaires were used to assess the number and severity of symptoms during the supplementation period. The main findings were; 1) Sodium bicarbonate loading produced slightly (3.2%) but significantly greater (p = .000) sprint performance than the placebo in some periods of the exercise session (LIST) and 2) Two days of Sb supplementation was sufficient to increase repeated sprint performance compared to the placebo trial. However, in contrast to hypotheses, no benefits from supplementation were observed for time to exhaustion and perception of fatigue (RPE). Considering that this current study found benefits from sodium bicarbonate loading during the 90 minutes simulated football performance test, it suggests that 2 days of sodium bicarbonate supplementation may improve repeated sprint performance. Future research on a greater sample size, a specific athletic population (professionals), and various exercise modes including ball activities would be beneficial in determining if this supplementation is worthwhile.
PublisherUniversity of Chester
TypeThesis or dissertation
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