- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT02258438
Effect of Breaking up Prolonged Sitting on Metabolic Flexibility
29. april 2021 oppdatert av: University of Colorado, Denver
The investigators propose in this project to determine the effect of 3 days of frequent interruption of prolonged sitting on metabolic health in healthy overweight sedentary adults (n=24), as compared to 3 days including a single long bout of isocaloric exercise or a control condition where subjects do not exercise but are subjected to prolonged sitting.
The investigators believe that this proposed project will provide an initial evidence base for the health benefits of breaking up prolonged sitting with short bursts of moderate-intensity activity, like walking.
Studieoversikt
Status
Fullført
Forhold
Detaljert beskrivelse
Although public-health recommendations to engage in moderate-to-vigorous physical activity (at least 30min, 5 days / week) have been widely promulgated by the government, most people are physically inactive.
Sedentary behaviors, like time spent sitting, are associated with serious implications on metabolic health, indicating that even in individuals who regularly exercise a reduction in time spent sitting can confer health benefits.
Encouraging recent evidence shows that walking breaks throughout the day are an effective strategy to offset the deleterious effects of prolonged uninterrupted sitting.
Further data however are needed to better understand the effect of these microbursts of activity along the day.
The investigators propose in this project to determine the effect of 3 days of frequent interruption of prolonged sitting on metabolic health in healthy overweight sedentary adults (n=24), as compared to 3 days including a single long bout of isocaloric exercise or a control condition where subjects do not exercise but are subjected to prolonged sitting.
Plasma glucose, insulin, triglycerides and free fatty acids concentrations and the use of substrate (glucose, fat or protein) to provide energy to the body in response to meals consumption will be measured on day 3 of each of these three conditions.
The investigators will furthermore assess the ability of the participants to perform the interventions on physical activity at the end of each day over the three days of intervention (2 days in free-living conditions and one day in a controlled environment).
The investigators believe that this proposed project will provide an initial evidence base for the health benefits of breaking up prolonged sitting with short bursts of moderate-intensity activity, like walking.
This innovative strategy may be more effective at combating the adverse effects of sedentary behaviors than more traditional approaches like structured exercise.
Studietype
Intervensjonell
Registrering (Faktiske)
28
Fase
- Ikke aktuelt
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
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Colorado
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Aurora, Colorado, Forente stater, 80045
- University of Colorado Hospital
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Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
19 år til 45 år (Voksen)
Tar imot friske frivillige
Ja
Kjønn som er kvalifisert for studier
Alle
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
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Grunnvitenskap
- Tildeling: Randomisert
- Intervensjonsmodell: Crossover-oppdrag
- Masking: Enkelt
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
---|---|
Eksperimentell: 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.
|
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.
|
Eksperimentell: 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.
|
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.
|
Eksperimentell: 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.
|
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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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
---|---|---|
Total substrate oxidation
Tidsramme: 1 day
|
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
|
1 day
|
Postprandial plasma insulin and glucose response
Tidsramme: 1 day
|
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
|
Dietary fat oxidation
Tidsramme: 1 day
|
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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Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Sponsor
Publikasjoner og nyttige lenker
Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.
Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart (Faktiske)
8. oktober 2014
Primær fullføring (Faktiske)
1. september 2017
Studiet fullført (Faktiske)
1. september 2017
Datoer for studieregistrering
Først innsendt
2. oktober 2014
Først innsendt som oppfylte QC-kriteriene
6. oktober 2014
Først lagt ut (Anslag)
7. oktober 2014
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
30. april 2021
Siste oppdatering sendt inn som oppfylte QC-kriteriene
29. april 2021
Sist bekreftet
1. april 2021
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Andre studie-ID-numre
- 14-0429
- UL1TR001082 (U.S. NIH-stipend/kontrakt)
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
NEI
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. .
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