Ergogenic effects of caffeine and sodium bicarbonate supplementation on intermittent exercise performance preceded by intense arm cranking exercise

Figures & data

Figure 1 Yo-Yo Intermittent Recovery level 2 test (Yo-Yo IR2) performance in control (CON) and placebo (PLA) trials (A) and individual Yo-Yo IR2 performance during PLA and after caffeine (CAF) and sodium bicarbonate (NaHCO ₃ ) supplementation (B) (n = 12). §: Denotes a significant difference from CON. *Denotes a significant difference from PLA. # Denotes a significant difference from CAF. Significance level P < 0.05.

Figure 2 Capillary blood lactate (A) and glucose (B) concentrations before, during and after the Yo-Yo IR2 test protocol (n = 12) in the placebo (PLA), caffeine (CAF) and sodium bicarbonate (NaHCO ₃ ) trials.

Figure 3 Rating of Perceived Exertion (RPE) at 160 and 280 m during the Yo-Yo IR2 test, as well as at exhaustion in PLA, CAF and NaHCO ₃ . *Denotes a significant difference from PLA. Significance level P < 0.05.