• Luis H B Ferreira, Andre C Smolarek, Philip D Chilibeck, Marcelo P Barros, Steven R McAnulty, Brad J Schoenfeld, Bruna Amorim Zandona, and Tácito P Souza-Junior.
• Research Group on Metabolism, Nutrition and Strength Training, Department of Physical Education, Federal University of Parana, Curitiba, Brazil; University of Saskatchewan, College of Kinesiology, University of Saskatchewan, Saskatoon, Sakatchewan, Canada. Electronic address: lhboikoferreira@gmail.com.
• Nutrition. 2019 Apr 1; 60: 94-99.

ObjectivesIt is well established that ingestion of sodium bicarbonate (NaHCO3) causes metabolic alkalosis. However, there is no consensus in terms of optimal NaHCO3 doses leading to enhanced performance. This study aimed to determine the effects of different NaHCO3 doses on performance and lactate clearance in non-professional cyclists.MethodsTwenty-one cyclists performed the following three double-blind trials: 1) ingestion of 0.3 g · kg-1 body weight (BW) of placebo; 2) ingestion of 0.1 g · kg-1 BW NaHCO3 plus 0.2 g · kg-1 BW placebo (0.1 BC); and 3) ingestion of 0.3 g · kg-1 BW NaHCO3 (0.3 BC). Performance was evaluated after warm-up on the bike followed by a performance test until exhaustion. Lactate levels were monitored in blood samples before and immediately after performance tests.ResultsLactate levels in the blood were significantly higher after exercise in 0.3 BC and 0.1 BC (15.12 ± 0.92 versus 10.3 ± 1.22 and 13.24 ± 0.87 versus 10.3 ± 1.22 mmol/L; P < 0.05) compared with control. Significant improvements in performance were only identified in 0.3 BC group (76.42 ± 2.14; P = 0.01).ConclusionsThe present study found that 0.3 g · kg-1 BW NaHCO3 is effective in improving performance and improving blood lactate levels in cyclists compared with control and 0.1 g · kg-1 BW NaHCO3.Copyright © 2018 Elsevier Ltd. All rights reserved.

24 keywords...

hide…