Suplementação com LACTATO não ajuda no ciclismo.

 

Parece bobeira, mas tem um monte de preparador físico prescrevendo suplementação com lactato para ajudar esportistas de modalidades de endurance. Em estudo que vai sair no JSCR acaba de ser evidenciado que suplementar com lactato não ajuda no ciclismo:

 

Journal of Strength & Conditioning Research:
POST ACCEPTANCE, 8 May 2013
doi: 10.1519/JSC.0b013e3182986a4c
Effect of lactate supplementation and sodium bicarbonate on 40 km cycling time trial performance
Northgraves, Matthew J.; Peart, Daniel J.; Jordan, Christian; Vince, Rebecca V.
The use of nutritional supplements to improve sporting performance and increase training adaptations is commonplace amongst athletes and is an expanding market in terms of product choice and availability. The purpose of this study was to examine the effects of two ergogenic aids with extracellular blood buffering potential, namely sodium bicarbonate (NaHCO3) and a lactate supplement, during a 40 km cycling time trial. Seven recreationally active males (age, 22.3 +/- 3.3 years; height, 182.5 +/- 6.5 cm; body mass, 79.2 +/- 6.3 kg) completed five 40 km cycling time trials, including a familiarization trial in a randomized blind double placebo design. Subjects ingested either 1.) 300 mg per kg body mass NaHCO3 (BICARB), 2.) 45 mg per kg sodium chloride (PL-BICARB) as the placebo for the NaHCO3 trial, 3.) 21.5 mg per kg body mass lactate supplement (LACTATE) and 4.) plain flour as the placebo for the lactate trial (PL-LACTATE) 60 minutes before exercise. There was no significant difference in performance between the four conditions (p> 0.05). Whilst NaHCO3 ingestion induced significant changes in all the acid-base variables (all p< 0.05), no significant change was seen following lactate ingestion (p> 0.05). Subjects in the LACTATE condition did have a significantly higher heart rate (p< 0.05) without experiencing any greater perceived exertion (p> 0.05) than the other three conditions. Neither NaHCO3 nor lactate supplementation appear to improve 40 km cycling time trial performance. However the potential benefits following LACTATE regarding perceived exertion require further research.

http://journals.lww.com/nsca-jscr/Abstract/publishahead/Effect_of_lactate_supplementation_and_sodium.97773.aspx

 

Na foto abaixo, o melhor (e único) ciclista gaúcho que conheço.

Felipe Fossati Reichert

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