- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT00830999
Fat Metabolism in Response to Acute Diet- and Exercise-induced Changes in Energy Balance (DEV)
VLDL-triglyceride Metabolism in Response to Acute Diet- and Exercise-induced Changes in Energy Balance
Panoramica dello studio
Stato
Condizioni
Descrizione dettagliata
Excess body fat and a sedentary lifestyle are associated with increased plasma triglyceride (TG) and apolipoprotein B-100 (apoB-100) concentrations, which are important risk factors for the development of cardiovascular disease.
Weight loss and endurance exercise improve plasma lipid and lipoprotein concentrations. However, the mechanisms responsible for this effect are largely unknown, and much uncertainty remains regarding the independent roles of dietary energy intake, exercise energy expenditure, and net energy balance in controlling plasma TG concentrations.
The main goal of this project, therefore, is to investigate the mechanisms by which acute alterations in energy balance, induced by diet and/or physical activity (endurance exercise), regulate very-low density lipoprotein (VLDL) metabolism.
Subjects will be asked to perform 3 separate trials. One of these will always be an "energy balance" trial that will act as the control trial for the other 2 trials they perform. Subjects will therefore be randomized to 2 different study arms.
Tipo di studio
Iscrizione (Effettivo)
Fase
- Non applicabile
Contatti e Sedi
Luoghi di studio
-
-
Missouri
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Saint Louis, Missouri, Stati Uniti, 63110
- Washington University in Saint Louis
-
-
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- overweight and obese men
- normal to mild hypertriglyceridemia
Exclusion Criteria:
- Smoking
- Any medical condition other than increased body weight (e.g. diabetes, heart disease, etc.).
- Use of drugs known to affect lipid metabolism (e.g. statins, etc.).
- Regular exercise training.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Prevenzione
- Assegnazione: Randomizzato
- Modello interventistico: Assegnazione di gruppo singolo
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
---|---|
Sperimentale: Positive energy balance
Comparison between isocaloric and hypercaloric diets with no exercise performed in any trials
|
Subjects will consume over a 24 hour period 33% more calories than they require to meet their energy demands.
Subjects will consume over a 24 hour period a sufficient amount of calories to meet their energy needs.
|
Sperimentale: Energy balance with exercise
Comparison between an isocaloric diet without exercise and a hypercaloric diet with a sufficient amount of exercise performed to match the excess calories consumed resulting in both trials being in net energy balance.
|
Subjects will consume over a 24 hour period a sufficient amount of calories to meet their energy needs.
Subjects will consume over a 24 hour period 33% more calories than they require to meet their energy demands but will perform 2 hours of exercise that will be sufficient to burn off the excess calories consumed resulting in subjects being in net energy balance.
|
Sperimentale: Negative energy balance
Comparison between isocaloric and hypocaloric diets with no exercise performed in any trials
|
Subjects will consume over a 24 hour period a sufficient amount of calories to meet their energy needs.
Subjects will consume over a 24 h period only 66% of the calories required to meet their energy demands such that they will be in a net negative calorie balance in this trial.
|
Sperimentale: Negative energy balance with exercise
Comparison between consuming an isocaloric diet without exercise and consuming the same amount of calories as in the isocaloric trial but with exercise performed resulting in net negative energy balance in the exercise trial.
|
Subjects will consume over a 24 hour period a sufficient amount of calories to meet their energy needs.
Subjects will consume over a 24 hour period the same amount of calories as ingested in the isocaloric trial but will also perform 2 hours of exercise that will be sufficient to burn off a third of the calories they consumed during this day resulting in subjects being in net negative energy balance in this trial
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Lasso di tempo |
---|---|
Very Low Density Lipoprotein-Triglyceride and apoB-100 concentrations
Lasso di tempo: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
---|---|---|
Liver Very Low Density Lipoprotein-Triglyceride and apoB-100 secretion rates
Lasso di tempo: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
|
Liver Very Low Density Lipoprotein-Triglyceride and apoB-100 clearance rates from plasma
Lasso di tempo: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
|
Plasma glucose concentration and turnover rate
Lasso di tempo: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
|
Plasma insulin concentration
Lasso di tempo: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
|
Plasma free fatty acid concentration and turnover rate
Lasso di tempo: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
|
Plasma glucose concentration
Lasso di tempo: During acute (24 hour) changes in energy intake and/or energy expenditure
|
Measured hourly over the 24 h period.
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During acute (24 hour) changes in energy intake and/or energy expenditure
|
Plasma insulin concentration
Lasso di tempo: During acute (24 hour) changes in energy intake and/or energy expenditure
|
Measured hourly over the 24 h period.
|
During acute (24 hour) changes in energy intake and/or energy expenditure
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Plasma free fatty acid concentration
Lasso di tempo: During acute (24 hour) changes in energy intake and/or energy expenditure
|
Measured hourly over the 24 h period.
|
During acute (24 hour) changes in energy intake and/or energy expenditure
|
Collaboratori e investigatori
Pubblicazioni e link utili
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- 05-0195
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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