About this trial
This study is being done to understand how chronic inflammation affects muscle function and responses to exercise.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Obese men and women ≥ 20 and ≤ 45 years of age.
Disqualifiers
Diabetes or fasting plasma glucose >126 mg/dL
Anemia (female subjects hemoglobin of <11 g/dl and male subjects hemoglobin <12 g/dl)
Active coronary artery disease or history of unstable macrovascular disease (unstable angina, myocardial infarction, stroke, and revascularization of coronary, peripheral or carotid artery within 3 months of recruitment)
Renal failure (serum creatinine > 1.5mg/dl)
Trial population
Men and women ages 20-45 years with Body Mass Index 20-40
Trial design
Cohort
Prospective
Treatments tested in this trial
Treadmill Test
Diagnostic testMeasurement of whole-body fitness level. Walking or running on a treadmill and breathing into a machine that measures oxygen level during test. Heart rhythm is continuously monitored during exercise using an electrocardiogram (ECG).
Strength Test
Diagnostic testMeasure the strength of leg muscles by kicking against a machine with resistance.
Dual-Energy X-Ray Absorptiometry
Diagnostic testBody composition measurement.
Muscle Biopsy
Procedure/SurgeryObtain a small piece of muscles from the upper part of the legs
Fat Biopsy
Procedure/SurgeryFat sample taken from abdomen
Resting Energy Expenditure
Diagnostic testMeasured by indirect calorimetry. Measures how much energy the body uses at rest by placing a special plastic dome over the head while resting quietly for 30 minutes. Measures oxygen breathed in and carbon dioxide breathed out.
Magnetic resonance imaging
Diagnostic testMRI on upper leg to look at fat and muscle
Treatment groups
Trial outcomes
Primary outcomes
Change in muscle protein synthesis
Skeletal muscle protein synthesis will be measured from the rate of incorporation of infused amino acids measured by mass spectrometry.
Secondary outcomes
Change in mRNA expression of exercise responsive genes
Measure messenger ribonucleic acids (mRNAs) expression on exercise responsive genes
Change in expression and activation (phosphorylation) of signaling proteins
Phosphorylation is a common mechanism for the regulation of receptor function
Sponsors and contacts
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