Dietary antioxidant supplementation combined with quercetin improves cycling time trial performance.
Int J Sport Nutr Exerc Metab
; 16(4): 405-19, 2006 Aug.
Article
en En
| MEDLINE
| ID: mdl-17136942
ABSTRACT
We investigated whether 6 wk of antioxidant supplementation (AS) would enhance 30 km time trial (TT) cycling performance. Eleven elite male cyclists completed a randomized, double-blind, cross-over study to test the effects of twice daily AS containing essential vitamins plus quercetin (FRS), and AS minus quercetin (FRS-Q) versus a baseline TT (B). MANOVA analysis showed that time to complete the 30 km TT was improved by 3.1% on FRS compared to B (P < 0.01), and by 2% over the last 5 km (P < 0.05). Absolute and relative (%HRmax) heart rates and percent VO2max were not different between trials, but average and relative power (% peak power) was higher on FRS (P < or = 0.01). Rates of carbohydrate and fat oxidation were not different between trials. Thus, FRS supplementation significantly improved high-intensity cycling TT performance through enhancement of power output. Further study is needed to determine the potential mechanism(s) of the antioxidant efficacy.
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Banco de datos:
MEDLINE
Asunto principal:
Resistencia Física
/
Quercetina
/
Antioxidantes
Tipo de estudio:
Clinical_trials
Límite:
Adult
/
Humans
/
Male
Idioma:
En
Año:
2006
Tipo del documento:
Article