Exercise and Insulin Signaling in Human Skeletal Muscle

Completed · Not applicable

Conditions studied: Insulin Sensitivity, Obesity, Sedentary Lifestyle

In brief

Obesity is associated with a decrease in skeletal muscle insulin sensitivity. Aerobic exercise can increase insulin sensitivity in the few hours following exercise, however the cellular mechanisms are not completely understood. The current project is to investigate mechanisms of exercise improvements to skeletal muscle insulin sensitivity.

Key facts

Study ID

NCT02987491

Run by

Oregon State University

People needed

20

Starts

2016-11-01

Expected to finish

2018-06-28

Last updated by the study team

2019-08-28

Who can join

Age: 18 and older, up to 45. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Males or Females
• Aged 18-45 years
• Normal weight (body mass index [BMI] 18-26 kg/m2) or obese (BMI 30-46 kg/m2)
• Sedentary (< 1 hour of planned physical activity per week for ≥ 6 months)
• Weight stable (< 2 kg change in body mass for ≥ 6 months)
• Non-smokers (no tobacco or nicotine use for ≥ 1 year)

You may not qualify if…

• Hypertension (systolic blood pressure >140 mmHg, diastolic blood pressure > 90mmHg)
• Chronic health condition including diabetes, cardiovascular disease, treated hypertension, cancer, anemia, uncontrolled hyper- or hypothyroidism.
• Pregnant, nursing, irregular menses or post-menopausal (if female)
• Hyperglycemia (fasting glucose >126 mg/dl)
• Hypercholesterolemia (fasting LDL>140mg/dl)
• Hemoglobin < 13.0 g/dl (males), < 11.5 g/dl (females)
• Compromised renal function (outside 135-145 mmol/L sodium, 3.5-5.1 mmol/L potassium)
• Lidocaine allergy
• Medications including β-blockers, angiotensin converting enzyme inhibitors, insulin, thiazolidinediones, metformin, sulfonylureas, chronic non-steroidal anti-inflammatory use, anti-coagulant (e.g. warfarin), current antibiotics, opiates, monoamine oxidase inhibitors, benzodiazepines, or others that may impact the study outcomes
• Any physical limitation that prevents a participant from safely completing the exercise test
• Due to the risks associated with the current protocol, individuals with a diminished capacity to consent will be excluded. Similarly, due to the need for constant, accurate participant monitoring during metabolic study activities, participants will need to clearly understand verbal and written English. Participants who cannot clearly understand verbal and written English will be excluded.

Where it is running

• Oregon State University — Corvallis, Oregon, United States

Full record on ClinicalTrials.gov

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