Fig. 1From: Caffeine and sodium bicarbonate supplementation alone or together improve karate performanceTime to exhaustion during karate-specific aerobic test in each treatment. TTE, time to exhaustion; CAF, caffeine; NaHCO3, sodium bicarbonate; PLA, placebo; CON, control. * Significant difference with PLA and CON (P < 0.05)Back to article page