Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Muscle glycogen depletion and subsequent replenishment affect anaerobic capacity of horses
Autore:
Lacombe, VA; Hinchcliff, KW; Geor, RJ; Baskin, CR;
Indirizzi:
Ohio State Univ, Coll Vet Med, Dept Vet Clin Sci, Equine Exercise Physiol Lab, Columbus, OH 43210 USA Ohio State Univ Columbus OH USA 43210 Physiol Lab, Columbus, OH 43210 USA
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 4, volume: 91, anno: 2001,
pagine: 1782 - 1790
SICI:
8750-7587(200110)91:4<1782:MGDASR>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
HIGH-INTENSITY EXERCISE; METABOLIC RESPONSE; MAXIMAL EXERCISE; INTERMITTENT EXERCISE; DIETARY CARBOHYDRATE; ENERGY-METABOLISM; PERFORMANCE; FATIGUE; AVAILABILITY; FORCE;
Keywords:
maximal accumulated oxygen deficit; oxygen consumption; lactate; glucose;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Hinchcliff, KW Ohio State Univ, Coll Vet Med, Dept Vet Clin Sci, Equine Exercise Physiol Lab, 601 Tharp St, Columbus, OH 43210 USA Ohio State Univ 601 Tharp St Columbus OH USA 43210 3210 USA
Citazione:
V.A. Lacombe et al., "Muscle glycogen depletion and subsequent replenishment affect anaerobic capacity of horses", J APP PHYSL, 91(4), 2001, pp. 1782-1790

Abstract

The purpose of this study was to determine the effect of muscle glycogen depletion and subsequent replenishment on anaerobic capacity of horses. In ablinded crossover study, seven fit horses performed glycogen-depleting exercise on two occasions. Horses were infused after glycogen-depleting exercise with either 6 g/kg body wt of glucose as a 13.5% solution in 0.9% NaCl (Glu) or with 0.9% NaCl (Sal) of equivalent volume. Subsequently, horses performed a high-speed exercise test (120% of maximal rate of oxygen consumption) to estimate maximum accumulated oxygen deficit. Replenishment of muscleglycogen was greater (P < 0.05) in Glu [from 24.7 +/- 7.2 (SE) to 116.5 +/- 7 mmol/kg wet wt before and after infusion, respectively] than in Sal (from 23.4 +/- 7.2 to 47.8 +/- 5.7 mmol/kg wet wt before and after infusion, respectively). Run time to fatigue during the high-speed exercise test (97.3+/- 8.2 and 70.8 +/- 8.3 s, P < 0.05), maximal accumulated oxygen deficit (105.7 +/- 9.3 and 82.4 +/- 10.3 ml O-2 equivalent/kg, P < 0.05), and bloodlactate concentration at the end of the high-speed exercise test (11.1 +/-1.4 and 9.2 +/- 3.7 mmol/l, P < 0.05) were greater for Glu than for Sal, respectively. We concluded that decreased availability of skeletal muscle glycogen stores diminishes anaerobic power generation and capacity for high-intensity exercise in horses.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 19:07:14