Anmelden/Registrieren
Zurück zur geteilten Ansicht
Verfasser Titel Jahr
zeige Details Ravussin, E., Pahud, P., ... Substrate utilization during prolonged exercise preceded by ingestion of13C-glucose in glycogen depleted and control subjects
in: Pflügers Archiv , ISSN 1432-2013, Vol. 382 (3. 1979), p. 197-202
Zugang: zum Volltext
ähnliche Vorschläge
1979
Abstract The utilization of 100 g glucose by 5 control and 5 glycogen depleted subjects was investigated during a prolonged exercise, using naturally labelled13C-glucose as a metabolic tracer in conjunction with continuous respiratory exchange measurements. 1 h after glucose ingestion, the subjects pedaled for 2 h at 40% of theirVO2 max. In both groups, expired CO2 reached similar peaks of enrichment with13C after 75 min of exercise. At this time, control subjects used principally carbohydrate (65%), exogenous glucose representing 24% of the total energy expenditure. In contrast the glycogen depleted subjects used mainly lipid (70%), exogenous glucose representing 20% of the energy expenditure. In the latter subjects, FFA plasma levels remained 2 to 3 times higher than those of non-depleted subjects throughout the whole exercise period. Control subjects oxidized an average of 41±1 g and glycogen depleted subjects 38±2 g of exogenous glucose during the 2 h exercise period. It is concluded that during an exercise which is preceded by the ingestion of glucose: a) The principal energetic substrate is carbohydrate for control and lipid for glycogen depleted subjects. b) Inspite of their glycogen depletion, these subjects do not utilize ingested glucose to a greater extent than the control subjects, which is probably due to their higher FFA plasma levels. c) The trend to store carbohydrate energy remains important during muscular exercise.
Copyright: Copyright 1979 Springer-Verlag
beteiligte Personen: Ravussin, E. , Pahud, P. , Dörner, A. , Arnaud, M. J. , Jéquier, E.
Format: Elektronisch
Erschienen: 1979.
Serie: Springer Online Journal Archives 1860-2000 [Dig. Serial]
Schlagwörter:
URL: http://dx.doi.org/10.1007/BF00583702

Ähnliche Vorschläge

Zurück zur geteilten Ansicht
Verfasser Titel Jahr
zeige Details Pirnay, F., Lacroix, M., ... Effect of glucose ingestion on energy substrate utilization during prolonged muscular exercise
in: European journal of applied physiology , ISSN 1439-6327, Vol. 36 (4. 1977), p. 247-254
Zugang: zum Volltext
ähnliche Vorschläge
1977
zeige Details Gautier, J. F., Pirnay, F., ... Availability of glucose ingested during muscle exercise performed under acipimox-induced lipolysis blockade
in: European journal of applied physiology , ISSN 1439-6327, Vol. 68 (5. 1994), p. 406-412
Zugang: zum Volltext
ähnliche Vorschläge
1994
zeige Details Décombaz, J.. Oxidation and Metabolie Effects of Fructose or Glucose Ingested Before Exercise
In: International journal of sports medicine. - Stuttgart [u.a.] : Thieme Vol. 06, No. 05 (10. 1985), p. 282-286
Zugang: zum Volltext
ähnliche Vorschläge
1985
zeige Details Massicotte, D.. Oxidation of Exogenous Carbohydrate During Prolonged Exercise in Fed and Fasted Conditions
In: International journal of sports medicine. - Stuttgart [u.a.] : Thieme Vol. 11, No. 04 (8. 1990), p. 253-258
Zugang: zum Volltext
ähnliche Vorschläge
1990
zeige Details Décombaz, J., Arnaud, M. -J., ... Energy metabolism of medium-chain triglycerides versus carbohydrates during exercise
in: European journal of applied physiology , ISSN 1439-6327, Vol. 52 (1. 1983), p. 9-14
Zugang: zum Volltext
ähnliche Vorschläge
1983