Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Effect of branched-chain amino acids (BCAA), glucose, and glucose plus BCAA on endurance performance in rats
Autore:
Calders, P; Matthys, D; Derave, W; Pannier, JL;
Indirizzi:
StateGhent,Ghent, Dept Pediat Cardiol, Lab Normal & Pathol Physiol, B-9000State Univ Ghent Ghent Belgium B-9000 ab Normal & Pathol Physiol, B-9000 State Univ Ghent, Inst Kinesiol & Sport Sci, B-9000 Ghent, Belgium State Univ Ghent Ghent Belgium B-9000 & Sport Sci, B-9000 Ghent, Belgium
Titolo Testata:
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
fascicolo: 4, volume: 31, anno: 1999,
pagine: 583 - 587
SICI:
0195-9131(199904)31:4<583:EOBAA(>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
PROLONGED EXERCISE; MUSCLE GLYCOGEN; CARBOHYDRATE SUPPLEMENTATION; SUSTAINED EXERCISE; AMMONIA RESPONSES; FREE-TRYPTOPHAN; PLASMA; FATIGUE; HUMANS; METABOLISM;
Keywords:
fatigue; ammonia; amino acid supplementation; carbohydrate availability;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Pannier, JL Inst Phys Educ, Watersportlaan 2, B-9000 Ghent, Belgium Inst Phys Educ Watersportlaan 2 Ghent Belgium B-9000 Belgium
Citazione:
P. Calders et al., "Effect of branched-chain amino acids (BCAA), glucose, and glucose plus BCAA on endurance performance in rats", MED SCI SPT, 31(4), 1999, pp. 583-587

Abstract

Purpose: The purpose of this study was to assess the effects of pre-exercise administration of branched-chain amino acids (BCAA), glucose, and glucose plus BCAA on time to exhaustion during treadmill exercise in rats. Methods: Wistar rats were injected intraperitoneally with 1 mL of saline (0.9% NaCl), BCAA (30 mg), glucose (100 mg), or glucose plus BCAA 5 min before either 45 min of submaximal exercise (N = 32) or running to exhaustion (N = 24). After the submaximal exercise test, blood was collected for the measurement of ammonia, BCAA, free tryptophan (free TRP), glucose, free fatty acid, and lactic acid, and muscle samples were taken from the m. soleus for determination of glycogen content. Results: Mean run time to exhaustion was significantly longer after BCAA administration (158 +/- 26 min) compared with that after saline (118 +/- 35 min)(P < 0.05) but not compared with that after glucose administration (179 +/- 21 min). When glucose is administered before exercise, the supplementary administration of BCAA had no additional effect on performance (171 +/- 12 min). The data on blood ammonia, ratio of free TRP/BCAA, and muscle glycogen did not provide a clue for explaining thehigher endurance performance after BCAA supplementation. Conclusion: The results support the hypothesis that the effect of BCAA administration on performance could be related to carbohydrate availability during exercise.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/09/20 alle ore 07:46:47