CAFFEINE INTAKE AND ITS EFFECT ON THE MAXIMAL AEROBIC SPEED CORRIDORS 800 -METER ATHLETES

• Published in: Nutrición hospitalaria : organo oficial de la Sociedad Española de Nutrición Parenteral y Enteral Vol. 32; no. 4; pp. 1703 - 1707
• Main Authors: Rosales Soto, Giovanni, Monsálves Álvarez, Matías, Yáñez Sepúlveda, Rodrigo, Durán Agüero, Samuel
• Format: Journal Article
• Language: Spanish
• Published: Spain 01.10.2015
• Subjects: Aerobiosis - drug effects; Athletic Performance; Caffeine - pharmacology; Central Nervous System Stimulants - pharmacology; Cross-Over Studies; Double-Blind Method; Female; Humans; Lactic Acid - blood; Male; Running; Young Adult
• ISSN: 1699-5198
• DOI: 10.3305/nh.2015.32.4.9200

to check the effects of caffeine intake (3 mg/kg-1) and improved time to exhaustion limit of maximum aerobic speed and could modify blood lactate levels in 800-meter runners. the study is based on an experimental design, crossover, randomized and blind. 7 subjects (20 ± 3 years, 63 ± 6 kg, and 169.1 ± 7 cm) 800-meter runners, they should be competing for at least three years and be among the top 10 national ranking. They conducted a test timeout to exhaustion on a treadmill at maximum aerobic speed, where they ingested a capsule could contain caffeine (3 mg/kg-1) or placebo (sucralose). Lactate concentration at the rest and end of each test was measured. caffeine intake showed a significant increase in the duration of the timeout relative to placebo (376 ± 137-457 ± 182 sec, respectively, p < 0.05). Regarding the blood lactate, no significant difference between the rest condition, the placebo and caffeine intake (p < 0.05). the use of caffeine as an ergogenic aid, in doses of 3 mg/kg-1 significantly increased (p < 0.05) TLIM of VAM to exhaustion. This effect is an improvement in the performance of 800-meter runners. In turn, a significant increase in the concentrations of lactate, which could refer to the increase in intensity after caffeine intake work is appreciated.