- ICH GCP
- Registr klinických studií v USA
- Klinická studie 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
Přehled studie
Postavení
Podmínky
Detailní popis
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.
Typ studie
Zápis (Aktuální)
Fáze
- Nelze použít
Kontakty a umístění
Studijní místa
-
-
Missouri
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Saint Louis, Missouri, Spojené státy, 63110
- Washington University in Saint Louis
-
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Kritéria účasti
Kritéria způsobilosti
Věk způsobilý ke studiu
Přijímá zdravé dobrovolníky
Pohlaví způsobilá ke studiu
Popis
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.
Studijní plán
Jak je studie koncipována?
Detaily designu
- Primární účel: Prevence
- Přidělení: Randomizované
- Intervenční model: Přiřazení jedné skupiny
- Maskování: Žádné (otevřený štítek)
Zbraně a zásahy
Skupina účastníků / Arm |
Intervence / Léčba |
|---|---|
|
Experimentální: 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.
|
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Experimentální: 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.
|
|
Experimentální: 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.
|
|
Experimentální: 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
|
Co je měření studie?
Primární výstupní opatření
Měření výsledku |
Časové okno |
|---|---|
|
Very Low Density Lipoprotein-Triglyceride and apoB-100 concentrations
Časové okno: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
Sekundární výstupní opatření
Měření výsledku |
Popis opatření |
Časové okno |
|---|---|---|
|
Liver Very Low Density Lipoprotein-Triglyceride and apoB-100 secretion rates
Časové okno: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
|
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Liver Very Low Density Lipoprotein-Triglyceride and apoB-100 clearance rates from plasma
Časové okno: 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
Časové okno: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
|
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Plasma insulin concentration
Časové okno: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
|
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Plasma free fatty acid concentration and turnover rate
Časové okno: After acute (24 hour) changes in energy intake and/or energy expenditure
|
After acute (24 hour) changes in energy intake and/or energy expenditure
|
|
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Plasma glucose concentration
Časové okno: 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
|
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Plasma insulin concentration
Časové okno: 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
|
|
Plasma free fatty acid concentration
Časové okno: 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
|
Spolupracovníci a vyšetřovatelé
Publikace a užitečné odkazy
Termíny studijních záznamů
Hlavní termíny studia
Začátek studia
Primární dokončení (Aktuální)
Dokončení studie (Aktuální)
Termíny zápisu do studia
První předloženo
První předloženo, které splnilo kritéria kontroly kvality
První zveřejněno (Odhad)
Aktualizace studijních záznamů
Poslední zveřejněná aktualizace (Odhad)
Odeslaná poslední aktualizace, která splnila kritéria kontroly kvality
Naposledy ověřeno
Více informací
Termíny související s touto studií
Klíčová slova
Další relevantní podmínky MeSH
Další identifikační čísla studie
- 05-0195
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