- ICH GCP
- US-Register für klinische Studien
- Klinische Studie NCT00786487
Training Effects on Skeletal Muscle Fatty Acid Metabolism
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
We are interested in how skeletal muscle processes fat and its effect on insulin resistance. This is an important question since insulin resistance predates and predicts type 2 diabetes. We know that if pharmaceutical grade lipid is infused into people, they develop insulin resistance. Thus, we would like to infuse pharmaceutical grade lipid into trained subjects, believing that trained subjects will develop less insulin resistance, less decline in muscle energy function, and less accumulation of fat metabolites than untrained subjects. For comparing the effects of the pharmaceutical grade fat infusion, we will also have a group of trained and untrained subjects given a control (glycerol) infusion. Glycerol is basically the same as pharmaceutical grade lipid infusion without the lipid component.
Three visits will be required. The first visit will involve measurement of fitness. A second visit will involve measurement of insulin resistance. The third visit will involve an inpatient stay, with a six hour infusion either the lipid or glycerol. Three muscle biopsies (before, during and after) will be take in conjunction with the infusion.
Studientyp
Einschreibung (Tatsächlich)
Phase
- Unzutreffend
Kontakte und Standorte
Studienorte
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Minnesota
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Minneapolis, Minnesota, Vereinigte Staaten, 55455
- University of Minnesota
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- Regardless of training status, age range will be from age 18 to 45. We will be limiting the upper age range because increased age is associated with sarcopenia and alteration of fiber type 29 and we would like to limit the confounding effects of age.
- We will define the lean group by a BMI of < 25 kg/m2. Weight must be stable [+/- 5 pounds] for at least the three months prior to the study for all participants.
- The untrained subjects must not be engaged in a regular exercise program (< 30 minutes regular exercise over 1 week).
- The trained subjects should be participating in regular running exercise (> 45 min/day, ≥ 5 days/week) and preferably be currently or recently participating in competitions (within 2 years).
Exclusion Criteria:
- Regardless of training status, subjects must not be on medications that may affect lipid levels, specifically lipid lowering agents, birth control pills or diuretics.
- The subjects should not be on a high fat diet (> 45% fat) as measured by a screening questionnaire. We will also administer a PAR-Q questionnaire (attached) to establish whether the subject will be safe for exercise testing. - The female subjects must not be pregnant. A pregnancy test will be performed prior to all study visits.
- If screening TG are > 300 (based on 1st visit results) or fasting glucose > 100 (based on 1st visit results), the subjects will be excluded.
- If the subject is allergic to eggs (used in lipid emulsions), soybeans(used in lipid emulsions), or lipid emulsions the subject will be excluded from the study.
- Subjects taking anti-platelet agents (if anti-platelet agent cannot be held for seven days) and subjects taking anticoagulation therapy will be excluded.
- Subjects with clinically significant medical issues or a history of hematologic (platelets < 100), hepatic (LFTs > 2X nl), renal (Cr > 1.5), pulmonary, or cardiac abnormalities (including abnormal EKG) will also be excluded.
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Grundlegende Wissenschaft
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Single
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
|---|---|
|
Experimental: lipid trained
20% lipid infusion in trained subjects
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1.5 ml/min for 6 hours
Andere Namen:
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Aktiver Komparator: glycerol trained
glycerol infusion into trained subjects
|
glycerol infusion (2.25 g/100ml) will be administered at 1.5 ml/min,
Andere Namen:
|
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Experimental: lipid untrained
lipid infusion into untrained subjects
|
1.5 ml/min for 6 hours
Andere Namen:
|
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Aktiver Komparator: glycerol untrained
glycerol infusion into untrained subjects
|
glycerol infusion (2.25 g/100ml) will be administered at 1.5 ml/min,
Andere Namen:
|
Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Insulin Sensitivity as Measured by Hyperinsulinemic Euglycemic Clamp at a Single Time Point (6 Hrs) After Intralipid or Glycerol Infusion
Zeitfenster: at 6 hours after starting lipid/glycerol infusion
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Insulin sensitivity (M value: Glucose infusion rate/kg FFM/min)measured at single time point 6 hours after initiating either intralipid or glycerol infusion)
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at 6 hours after starting lipid/glycerol infusion
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Mitarbeiter und Ermittler
Sponsor
Ermittler
- Hauptermittler: Lisa S Chow, MD, University of Minnesota
Publikationen und hilfreiche Links
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- 0804M29862
- Pending (Andere Zuschuss-/Finanzierungsnummer: National Institutes of Allery and Infectious Diseases)
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