Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Myocardial blood flow, oxygen consumption, and fatty acid uptake in endurance athletes during insulin stimulation
Autore:
Takala, TO; Nuutila, P; Katoh, C; Luotolahti, M; Bergman, J; Maki, M; Oikonen, V; Ruotsalainen, U; Gronroos, T; Haaparanta, M; Kapanen, S; Knuuti, J;
Indirizzi:
Univ Turku, Paavo Nurmi Ctr, Dept Med, FIN-20521 Turku, Finland Univ Turku Turku Finland FIN-20521 r, Dept Med, FIN-20521 Turku, Finland Univ Turku, Paavo Nurmi Ctr, Dept Clin Physiol, FIN-20521 Turku, Finland Univ Turku Turku Finland FIN-20521 lin Physiol, FIN-20521 Turku, Finland Univ Turku, Paavo Nurmi Ctr, Turku PET Ctr, FIN-20521 Turku, Finland Univ Turku Turku Finland FIN-20521 rku PET Ctr, FIN-20521 Turku, Finland Univ Turku, Paavo Nurmi Ctr, Sports & Exercise Med Unit, FIN-20521 Turku, Finland Univ Turku Turku Finland FIN-20521 se Med Unit, FIN-20521 Turku, Finland Hokkaido Univ, Dept Nucl Med, Sapporo, Hokkaido 0608638, Japan Hokkaido Univ Sapporo Hokkaido Japan 0608638 oro, Hokkaido 0608638, Japan
Titolo Testata:
AMERICAN JOURNAL OF PHYSIOLOGY-ENDOCRINOLOGY AND METABOLISM
fascicolo: 4, volume: 277, anno: 1999,
pagine: E585 - E590
SICI:
0193-1849(199910)277:4<E585:MBFOCA>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON EMISSION TOMOGRAPHY; BETA-OXIDATION; GLUCOSE-UTILIZATION; SKELETAL-MUSCLE; HEART; EXERCISE; ECHOCARDIOGRAPHY; HYPERTROPHY; METABOLISM; INHALATION;
Keywords:
exercise; positron emission tomography; free fatty acid; myocardial metabolism; skeletal muscle;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
37
Recensione:
Indirizzi per estratti:
Indirizzo: Knuuti, J Turku Univ, Cent Hosp, Turku PET Ctr, POB 52, FIN-20521 Turku, Finland Turku Univ POB 52 Turku Finland FIN-20521 -20521 Turku, Finland
Citazione:
T.O. Takala et al., "Myocardial blood flow, oxygen consumption, and fatty acid uptake in endurance athletes during insulin stimulation", AM J P-ENDO, 277(4), 1999, pp. E585-E590

Abstract

We have previously demonstrated reduced myocardial glucose uptake rates inhearts of endurance athletes, which could be due to increased use of alternative fuels or reduced energy demands. In the present study myocardial blood flow, oxygen consumption, and free fatty acid uptake were measured with [O-15]H2O, [O-15]O-2, [F-18]FTHA, and positron emission tomography (PET) in9 endurance athletes and 11 sedentary men during euglycemic hyperinsulinemia. Compared with sedentary men, athletes had 33% lower myocardial blood flow, 27% lower oxygen consumption, and 20% lower estimated myocardial work per gram of tissue. Myocardial fatty acid uptake rates were not significantly different in endurance athletes (0.83 +/- 0.29) and sedentary men (1.0 +/- 0.31 mu mol.100 g(-1).min(-1), P = 0.232). In conclusion, myocardial blood dow and oxygen consumption per unit mass of myocardium are reduced at rest in endurance athletes. This can be explained by reduced energy requirements per gram of tissue due to anatomic and physiological changes of the athlete's heart.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 17/01/20 alle ore 20:35:40