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Titolo:
Effects of muscle glycogen depletion on some metabolic and physiological responses to submaximal treadmill exercise
Autore:
Davie, AJ; Evans, DL; Hodgson, DR; Rose, RJ;
Indirizzi:
Univ Sydney, Dept Vet Clin Sci, Sydney, NSW 2006, Australia Univ Sydney Sydney NSW Australia 2006 in Sci, Sydney, NSW 2006, Australia Univ Sydney, Dept Anim Sci, Sydney, NSW 2006, Australia Univ Sydney Sydney NSW Australia 2006 im Sci, Sydney, NSW 2006, Australia
Titolo Testata:
CANADIAN JOURNAL OF VETERINARY RESEARCH-REVUE CANADIENNE DE RECHERCHE VETERINAIRE
fascicolo: 4, volume: 63, anno: 1999,
pagine: 241 - 247
SICI:
0830-9000(199910)63:4<241:EOMGDO>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
CARBOHYDRATE; PERFORMANCE; DEPENDENCE; HORSES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Davie, AJ So Cross Univ, Sch Exercise Sci & Sport Management, Lismore, NSW2480, Australia So Cross Univ Lismore NSW Australia 2480 e, NSW 2480, Australia
Citazione:
A.J. Davie et al., "Effects of muscle glycogen depletion on some metabolic and physiological responses to submaximal treadmill exercise", CAN J VET R, 63(4), 1999, pp. 241-247

Abstract

The aim of this study was to investigate the effects of reduced muscle glycogen concentration on some physiological and metabolic responses during moderate intensity treadmill exercise in horses. Six Thoroughbred geldings were randomly allocated to 2 treatments (protocols A and B) or control in a 3x 3 replicated Latin square design, In protocol A, horses performed low intensity exercise while horses in protocol B performed short bursts of high intensity exercise. Protocol A was designed to induce glycogen depletion mainly of slow twitch muscle fibers while protocol B aimed to deplete mainly fast twitch muscle fibers. Horses in the control group did not undergo exercise prior to the exercise test. Five hours after glycogen depletion, horses performed treadmill exercise at 60% (V)over dot (2max) at a treadmill slope of 10% until fatigue (20-30 min). The induced glycogen depletion prior to exercise had no significant effect on plasma glucose, insulin, or lactateconcentrations during the exercise test, and there was no effect on glycogen utilization rate, although respiratory exchange ratios were lower in theglycogen-depleted groups. The (V)over dot(2), heart rate and central bloodtemperature did not vary significantly between the protocols A and B and control throughout the exercise test. It was concluded that 20-30% depletionof glycogen concentration in the middle gluteal muscle resulted in a shifttowards fat metabolism, but does not significantly affect heart rate, oxygen uptake, or concentrations of plasma glucose and lactate during moderate intensity exercise.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 19:32:30