Metabolic Flexibility as a Biomarker of Adaptation to Diet and Exercise Challenges
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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Maryland
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Beltsville, Maryland, Forenede Stater, 20705
- USDA Beltsville Human Nutrition Center
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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:
- Males and Females
- Age 22 to 35 years at beginning of study
Exclusion Criteria:
- Women who have given birth during the previous 12 months
- Pregnant women or women who plan to become pregnant or become pregnant during the study
- Lactating women
- History or presence of diabetes, kidney disease, liver disease, certain cancers, gastrointestinal, pancreatic, other metabolic diseases, or malabsorption syndromes.
- History of bariatric or certain other surgeries related to weight control
- Smokers or other tobacco users (for at least 6 months prior to the start of the study)
- History of eating disorders or other dietary patterns which are not consistent with the dietary intervention (e.g., vegetarians, very low fat diets, high protein diets)
- Volunteers who have lost 10% of body weight within the last 12 months or who plan to initiate a weight loss program during the next 10 months
- Unable or unwilling to give informed consent or communicate with study staff
- Self-report of alcohol or substance abuse within the past 12 months and/or current acute treatment or rehabilitation program for these problems (long-term participation in Alcoholics Anonymous is not an exclusion)
- Other medical, psychiatric, or behavioral factors that in the judgment of the Principal Investigator may interfere with study participation or the ability to follow the intervention protocol
- Inclusion and exclusion criteria have been established to recruit a population of individuals across a wide age-range that has typical digestive process
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Andet
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Tredobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: High Intensity Exercise, High Carbohydrate Beverage
Study participant consumes a high carbohydrate beverage as part of the day's meals, and performs high intensity exercise (85% of VO2 max), while in the calorimeter.
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While in the calorimeter, each subject will complete four bouts of exercise.
Each bout is approximately 5 minutes in duration at a predetermined speed and elevation to achieve an intensity of 85% of VO2 max according to their fitness level test described previously.
Subjects then sit quietly until either the next meal or the next exercise bout.
Participants will consume a high carbohydrate beverage (750 g) with the following composition: 2.13 MJ/d, 113g carbohydrate, 4g fat, 6g protein.
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Eksperimentel: High Intensity Exercise, High Fat Beverage
Study participant consumes a high fat beverage as part of the day's meals, and performs high intensity exercise (85% of VO2 max), while in the calorimeter.
|
While in the calorimeter, each subject will complete four bouts of exercise.
Each bout is approximately 5 minutes in duration at a predetermined speed and elevation to achieve an intensity of 85% of VO2 max according to their fitness level test described previously.
Subjects then sit quietly until either the next meal or the next exercise bout.
Participants will consume a high fat beverage (750 g) with the following composition: 2.11 MJ/d, 8g carbohydrate, 50g fat, 7g protein.
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Eksperimentel: Low Intensity Exercise, High Carbohydrate Beverage
Study participant consumes a high carbohydrate beverage as part of the day's meals, and performs low intensity exercise (65% of VO2 max), while in the calorimeter.
|
Participants will consume a high carbohydrate beverage (750 g) with the following composition: 2.13 MJ/d, 113g carbohydrate, 4g fat, 6g protein.
While in the calorimeter, each subject completes one exercise bout approximately 40 minutes in duration, at a predetermined speed and elevation, to achieve an intensity of 65% of VO2 max.
Subjects then sit quietly until the next meal.
|
|
Eksperimentel: Low Intensity Exercise, High Fat Beverage
Study participant consumes a high fat beverage as part of the day's meals, and performs low intensity exercise (65% of VO2 max), while in the calorimeter.
|
Participants will consume a high fat beverage (750 g) with the following composition: 2.11 MJ/d, 8g carbohydrate, 50g fat, 7g protein.
While in the calorimeter, each subject completes one exercise bout approximately 40 minutes in duration, at a predetermined speed and elevation, to achieve an intensity of 65% of VO2 max.
Subjects then sit quietly until the next meal.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Metabolic Flexibility by Room Calorimetry
Tidsramme: 24 hours
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Participants will stay in a room calorimeter for 24 hours where oxygen consumed and carbon dioxide produced will be measured.
Mathematical approaches will use continuous calorimetry data to generate consistent estimates of the gas exchange rates, and hence accurate "instantaneous" respiratory exchange ratios.
This novel approach allows evaluating the instantaneous dynamics of respiratory quotient noninvasively and for many different conditions (e.g., exercise and various nutrient ratios).
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24 hours
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Continuous Glucose Monitoring
Tidsramme: 24 hours
|
Whole-day interstitial glucose profiles will be collected during each calorimeter measurement.
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24 hours
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Datoer for undersøgelser
Studer store datoer
Studiestart
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
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- HS42
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