Metabolic Flexibility as a Biomarker of Adaptation to Diet and Exercise Challenges
NCT ID: NCT01987388
Last Updated: 2017-05-31
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
NA
16 participants
INTERVENTIONAL
2012-12-31
2013-09-30
Brief Summary
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
CROSSOVER
OTHER
TRIPLE
Study Groups
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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.
High Intensity Exercise
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.
High Carbohydrate Beverage
Participants will consume a high carbohydrate beverage (750 g) with the following composition: 2.13 MJ/d, 113g carbohydrate, 4g fat, 6g protein.
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.
High Intensity Exercise
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.
High Fat Beverage
Participants will consume a high fat beverage (750 g) with the following composition: 2.11 MJ/d, 8g carbohydrate, 50g fat, 7g protein.
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.
Low Intensity Exercise
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.
High Carbohydrate Beverage
Participants will consume a high carbohydrate beverage (750 g) with the following composition: 2.13 MJ/d, 113g carbohydrate, 4g fat, 6g protein.
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.
Low Intensity Exercise
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.
High Fat Beverage
Participants will consume a high fat beverage (750 g) with the following composition: 2.11 MJ/d, 8g carbohydrate, 50g fat, 7g protein.
Interventions
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High Intensity Exercise
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.
Low Intensity Exercise
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.
High Carbohydrate Beverage
Participants will consume a high carbohydrate beverage (750 g) with the following composition: 2.13 MJ/d, 113g carbohydrate, 4g fat, 6g protein.
High Fat Beverage
Participants will consume a high fat beverage (750 g) with the following composition: 2.11 MJ/d, 8g carbohydrate, 50g fat, 7g protein.
Eligibility Criteria
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Inclusion Criteria
* Age 22 to 35 years at beginning of study
Exclusion Criteria
* 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
22 Years
35 Years
ALL
Yes
Sponsors
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United States Army Research Institute of Environmental Medicine
FED
USDA Beltsville Human Nutrition Research Center
FED
Responsible Party
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William Rumpler
Research Physiologist
Locations
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USDA Beltsville Human Nutrition Center
Beltsville, Maryland, United States
Countries
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Other Identifiers
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HS42
Identifier Type: -
Identifier Source: org_study_id
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