Title |
CAFFEINE INTAKE AND ITS EFFECT ON THE MAXIMAL AEROBIC SPEED CORRIDORS 800 -METER ATHLETES.
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Published in |
Nutrición Hospitalaria, October 2015
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DOI | 10.3305/nh.2015.32.4.9200 |
Pubmed ID | |
Authors |
Giovanni Rosales Soto, Matías Monsálves Álvarez, Rodrigo Yáñez Sepúlveda, Samuel Durán Agüero |
Abstract |
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. |
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