Energy Expenditure and Substrate Utilization During Acute Under- and Over-feeding
Studieoversikt
Status
Status
Forhold
Forhold
Intervensjon / Behandling
Intervensjon / Behandling
Detaljert beskrivelse
Studietype
Studietype
Registrering (Faktiske)
Registrering
Fase
Fase
- Ikke aktuelt
Kontakter og plasseringer
Studiesteder
-
-
North Carolina
-
Kannapolis, North Carolina, Forente stater, 28081
- UNC Chapel Hill Nutrition Research Institute
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria:
- Woman
- Postmenopausal
- Aged 50-65 years
- BMI 25-35kg/m2
- Not taking blood pressure or anti-inflammatory medications or any other medications that may impact the results
- Thyroid hormone profile within the normal reference range
- No medical condition which may impact the results (e.g. diabetes)
- Accustomed to eating regular meals including breakfast
Exclusion Criteria:
- Smoker
- Heavy exerciser (defined as >150 minutes/week for more than 3 months)
- Abuses alcohol or drugs
- Vegetarian
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Grunnvitenskap
- Tildeling: Randomisert
- Intervensjonsmodell: Crossover-oppdrag
- Masking: Ingen (Open Label)
Antall våpen
Våpen og intervensjoner
Deltakergruppe / ArmDeltakergruppe / Arm |
Intervensjon / BehandlingIntervensjon / Behandling |
|---|---|
|
Eksperimentell: Eucaloric Feeding
Subjects will complete an initial eucaloric feeding study day.
During this study day, subjects will receive 100% of their calorie requirements.
24-hour energy expenditure will be measured.
|
To assess 24-hour energy expenditure and substrate utilization subjects will spend 23 hours and 15 minutes each day in the metabolic chamber at the UNC NRI.
Subjects will be requested to arrive at the study center each morning following a 10hour overnight fast.
During each study day, subjects remained sedentary.
All meals were provided and were tailored to each subject's specific energy requirements and the study protocol (i.e.
50% or 150% of calorie requirements).
|
|
Eksperimentell: Underfeeding
Following the eucaloric feeding study day, subjects will undergo the underfeeding and overfeeding arms in random order.
During the underfeeding study arm, subjects will receive 50% of their calorie requirements (as determined during the initial eucaloric study day) for 3 days.
24-hour energy expenditure will be measured.
|
To assess 24-hour energy expenditure and substrate utilization subjects will spend 23 hours and 15 minutes each day in the metabolic chamber at the UNC NRI.
Subjects will be requested to arrive at the study center each morning following a 10hour overnight fast.
During each study day, subjects remained sedentary.
All meals were provided and were tailored to each subject's specific energy requirements and the study protocol (i.e.
50% or 150% of calorie requirements).
|
|
Eksperimentell: Overfeeding
Following the eucaloric feeding study day, subjects will undergo the underfeeding and overfeeding arms in random order.
During the overfeeding study arm, subjects will receive 150% of their calorie requirements (as determined during the initial eucaloric study day) for 3 days.
24-hour energy expenditure will be measured.
|
To assess 24-hour energy expenditure and substrate utilization subjects will spend 23 hours and 15 minutes each day in the metabolic chamber at the UNC NRI.
Subjects will be requested to arrive at the study center each morning following a 10hour overnight fast.
During each study day, subjects remained sedentary.
All meals were provided and were tailored to each subject's specific energy requirements and the study protocol (i.e.
50% or 150% of calorie requirements).
|
Hva måler studien?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Energy Expenditure
Tidsramme: 24-hour energy expenditure will be assessed
|
24-hour energy expenditure will be assessed using the metabolic chamber at UNC NRI.
Energy expenditure will be measured during eucaloric feeding (subjects will receive 100% of calorie requirements), as well as during 24, 48 and 72 hours of under and overfeeding.
|
24-hour energy expenditure will be assessed
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Whole blood transcriptomics
Tidsramme: Fasting a.m. sample, before lunch, and at 0.5, 2, and 4.5 hours post lunch
|
RNA will be extracted from whole blood.
Transcriptomic profile will be assessed by microarray
|
Fasting a.m. sample, before lunch, and at 0.5, 2, and 4.5 hours post lunch
|
|
Plasma metabolomics
Tidsramme: Fasting a.m. sample, before lunch, and at 0.5, 2, and 4.5 hours post lunch
|
Plasma metabolomic profile will be assessed using GC/MS and LC/MS platforms.
|
Fasting a.m. sample, before lunch, and at 0.5, 2, and 4.5 hours post lunch
|
Samarbeidspartnere og etterforskere
Sponsor
Sponsor
Etterforskere
Etterforskere
- Hovedetterforsker: Andrew G Swick, PhD, UNC Chapel Hill Nutrition Research Institute
Studierekorddatoer
Studer hoveddatoer
Studiestart
Studiestart
Primær fullføring (Faktiske)
Primær fullføring
Studiet fullført (Faktiske)
Studiet fullført
Datoer for studieregistrering
Først innsendt
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Anslag)
Først lagt ut
Oppdateringer av studieposter
Sist oppdatering lagt ut (Anslag)
Sist oppdatering lagt ut
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Andre studie-ID-numre
Andre studie-ID-numre
- 12-0681
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .