Por qué este gel
La cafeína del guaraná bloquea los receptores de adenosina A1/A2A en el sistema nervioso central, reduciendo la percepción del esfuerzo. La ISSN (2021) respalda 3-6 mg/kg para mejoras del 2-4% en resistencia y cognición. A diferencia de la cafeína sintética, el guaraná aporta una matriz natural con taninos, teobromina y saponinas — el ergogénico de un fruto, no de un laboratorio.
Fuentes:
- Referencias científicas
- • Currell K, Jeukendrup AE (2008). Superior endurance performance with ingestion of multiple transportable carbohydrates. Med Sci Sports Exerc. → pubmed.ncbi.nlm.nih.gov/18202575/
- • Earnest CP et al. (2004). Low vs. high glycemic index carbohydrate gel ingestion during simulated 64-km cycling time trial. J Strength Cond Res. → pubmed.ncbi.nlm.nih.gov/15292681/
- • Sims ST et al. (2007). Sodium loading aids fluid balance and reduces physiological strain in trained men exercising in the heat. Med Sci Sports Exerc. → pubmed.ncbi.nlm.nih.gov/17473776/
- • Guest NS et al. (2021). International Society of Sports Nutrition position stand: caffeine and exercise performance. JISSN. → pubmed.ncbi.nlm.nih.gov/33388079/
- • Southward K et al. (2018). The effect of acute caffeine ingestion on endurance performance: systematic review and meta-analysis. Sports Med. → pubmed.ncbi.nlm.nih.gov/29876876/
- • Kennedy DO et al. (2004). Improved cognitive performance in human volunteers following administration of guarana (Paullinia cupana) extract. Pharmacol Biochem Behav. → pubmed.ncbi.nlm.nih.gov/15582012/
- • Pomportes L et al. (2019). Cognitive performance enhancement induced by caffeine, carbohydrate and guarana mouth rinsing during submaximal exercise. Nutrients. → pubmed.ncbi.nlm.nih.gov/30769845/