Naslov
Ergogenic effect of pre-exercise chicken broth ingestion on a high-intensity cycling time-trial

Autori
Barbaresi, Silvia ; Blancquaert, Laura ; Nikolovski, Zoran ; de Jager, Sarah ; Wilson, Mathew ; Everaert, Inge ; De Baere, Siegrid, Croubels, Siska ; De Smet, Stefaan, Cable, N.Tim ; Derave, Wim

Izvornik
Journal of the International Society of Sports Nutrition (1550-2783) 18 (2021), 15; 1-12

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
carnosine ; anserine ; chicken broth ; pre-exercise meal ; high-intensity exercise ; performance

Sažetak
Background: chicken meat extract is a popular functional food in Asia. It is rich in the bioactive compounds carnosine and anserine, two histidine-containing dipeptides (HCD). Studies suggest that acute pre- exercise ingestion of chicken extracts has important applications towards exercise performance and fatigue control, but the evidence is equivocal. This study aimed to evaluate the ergogenic potential of the pre- exercise ingestion of a homemade chicken broth (CB) vs a placebo soup on a short-lasting, high- intensity cycling exercise. Methods: fourteen men participated in this double- blind, placebo- controlled, crossover intervention study. Subjects ingested either CB, thereby receiving 46.4mg/kg body weight of HCD, or a placebo soup (similar in taste without HCD) 40min before an 8min cycling time trial (TT) was performed. Venous blood samples were collected at arrival (fasted), before exercise and at 5 min recovery. Plasma HCD were measured with UPLC-MS/MS and glutathione (in red blood cells) was measured through HPLC. Capillary blood samples were collected at different timepoints before and after exercise. Results: a significant improvement (p = 0.033 ; 5.2%) of the 8min TT mean power was observed after CB supplementation compared to placebo. Post-exercise plasma carnosine (p< 0.05) and anserine (p < 0.001) was significantly increased after CB supplementation and not following placebo. No significant effect of CB supplementation was observed either on blood glutathione levels, nor on capillary blood analysis. Conclusions: oral CB supplementation improved the 8min TT performance albeit it did not affect the acid-base balance or oxidative status parameters. Further research should unravel the potential role and mechanisms of HCD, present in CB, in this ergogenic approach.

Izvorni jezik
Engleski

Znanstvena područja
Nutricionizam, Kineziologija

POVEZANOST RADA