SciELO - Scientific Electronic Library Online

 
vol.32 issue4Association between health related quality of life, bodyweight status (BMI) and physical activity and fitness levels in chilean adolescentsEating disorders and diet management in contact sports: EAT-26 questionnaire does not seem appropriate to evaluate eating disorders in sports author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Nutrición Hospitalaria

On-line version ISSN 1699-5198Print version ISSN 0212-1611

Abstract

ROSALES SOTO, Giovanni; MONSALVES ALVAREZ, Matías; YANEZ SEPULVEDA, Rodrigo  and  DURAN AGUERO, Samuel. Caffeine intake and its effect on the maximal aerobic speed corridors 800 -meter athletes. Nutr. Hosp. [online]. 2015, vol.32, n.4, pp.1703-1707. ISSN 1699-5198.  http://dx.doi.org/10.3305/nh.2015.32.4.9200.

Objectives: 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. Methods: 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. Results: 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). Conclusions: 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 increas

Keywords : Caffeine; Ergogenic aids; Performance; Lactate.

        · abstract in Spanish     · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License