Effect of Breaking up Prolonged Sitting on Metabolic Flexibility
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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Colorado
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Aurora, Colorado, Forenede Stater, 80045
- University Of Colorado Hospital
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-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- overweight but weight stable (less than +/- 3kg over previous 6 months) male and female adults (n=24) will be recruited.
- age between 19-45 years old,
- a BMI of 27-33 kg/m2,
- inactive (≤ 1.5hr/wk of moderate-to-vigorous activity),
- sedentary (office employees who are spending more than 6hrs/day in sitting position) and
- English-speaking.
Exclusion Criteria:
- any history of renal, cardiovascular or hepatic diseases,
- type 1 or 2 diabetes,
- cancer,
- pregnancy,
- smoking,
- consumption of drugs or alcohol (>40g/d),
- any medications known to interfere with lipid or energy metabolism,
- known physical activity contraindications, or major illness/physical problems (acute or chronic) that may limit their ability to perform the walking activities and
- menopause (defined as no menses in the prior 6 months). The use of birth pill control will be accepted. Women are asked to avoid pregnancy until completion of Condition C.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Enkelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Eksperimentel: Uninterrupted sitting
Patient will refrain from any structured activity and reduce any daily life activity.
The patient will spend 24 hours in the calorimeter room.
During the 24 hours the patient will remain sedentary for the 24 hours but will be able to watch TV, computer work or read.
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Subjects will be asked to refrain for two days from any structured activity and to reduce any daily life activity (walking, taking the stairs, biking, etc.) in their daily life.
On day 3, subjects will remain seated all day in the room calorimeter, except to rise from the chair to void.
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Eksperimentel: Sitting + 1 bout of activity
The patient will be asked to perform the 45 minutes of moderate-exercise intervention in the morning once per day for two days in their daily life.
This bout of exercise will be supervised by study staff on one of the treadmills On day 3 the patient will report at the Clinical and Translational Research Center (CTRC) of the University Hospital of Colorado and will spend 24hr in the room calorimeter.
During the day, you will be asked to sit quietly in a chair, except to rise from the chair to void, and to perform one bout of 45-min moderate-intensity walking on a treadmill.
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Subjects will be asked to perform 45 minutes of moderate-exercise in the morning once per day for two days in their daily life.
On day 3 they will remain seated all day in the room calorimeter, except to rise from the chair to void, and to perform one bout of 45-min moderate-intensity (defined below) walking on a treadmill at 1000.
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Eksperimentel: Sitting + microbursts of activity
The patient will be asked to refrain from any structured exercise running, swimming, lifting weights, yoga, dancing, etc.) for two days but to walk for the 5 minute intervention each hour between 1000 and 1800.
On day 3, The patient will report at the CTRC of the University Hospital of Colorado and will spend 24hr in the room calorimeter.
During the day, the patient will be asked to rise from the seated position every hour for 9 hours from 1000 to 1800 to complete 5 min moderate-intensity walking on a treadmill, which represents a total of 45 min.
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Subjects will be asked to refrain from any structured exercise for two days but to walk for 5 minutes each hour between 1000 and 1800 in daily life.
On day 3, subjects will rise from the seated position every hour for 9 hours from 1000 to 1800 to complete 5min moderate-intensity (defined below) walking on a treadmill, which represents a total of 45min.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Total substrate oxidation
Tidsramme: 1 day
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Total fat oxidation during the test day will be determined using whole-room indirect calorimetry.
O2 consumption and CO2 production will be determined from the flow rates and differences in gas concentrations between air entering and air exiting the calorimeter as previously described
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1 day
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Postprandial plasma insulin and glucose response
Tidsramme: 1 day
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Plasma glucose and insulin will be measured in fasting conditions and hourly during 12hrs following a standard meal consumption.
The area under the curve will be calculated for both plasma glucose and insulin.
This area will represent the postprandial response to a meal for both insulin and glucose.
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1 day
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Dietary fat oxidation
Tidsramme: 1 day
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Subjects will collect their own hourly breath sampling for 13CO2 by blowing through a straw into two 15ml Vacutainer after the investigators will have shown them the procedure.
Breath CO2 will be sampled directly from the Vacutainer with a syringe, and 13CO2 /12CO2 measured with Isotopic Ratio Mass Spectrometer (IRMS).
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1 day
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Publikationer og nyttige links
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 14-0429
- UL1TR001082 (U.S. NIH-bevilling/kontrakt)
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
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