IL-6 Regulation of Energy Stores During Recovery From an Acute Exercise Bout (REX-6)
Role of IL-6 in Regulating Energy Stores During Recovery From an Acute Exercise Bout
Study Overview
Status
Status
Conditions
Conditions
Intervention / Treatment
Intervention / Treatment
Study Type
Study Type
Enrollment (Actual)
Enrollment
Phase
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Capital Region
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Copenhagen, Capital Region, Denmark, 2100
- Centre for Physical Activity Research, Rigshospitalet Section 7641
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Participation Criteria
Eligibility Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
Physically active (defined as meeting the ACSM's guidelines of 2.5h per week of moderate to vigorous physical activity per week), young, healthy males will be included. Participants may be included in the study if they meet all the following criteria:
- Age ≥ 18 years and ≤ 40 years
- BMI < 18 and > 25 kg/m2
- Healthy (based on screening)
- Stable body weight for 6 months
- ≥ 2.5h/week moderate to vigorous physical activity
Exclusion Criteria:
• Cardiovascular disease
- Rheumatologic disease
- Metabolic disease
- Elite sports or high aerobic training status (VO2max > 60 mL O2/min/kg)
- Frequent/chronic use of medications affecting physical performance or inflammation (NSAIDS, DMARDS, corticosteroids)
- Aspirin use >100 mg/d
- Thyroid disease
- Current infection
- Aspartate amino transferase (AST) or alanine amino transferase (ALT) >2x upper normal range
- History of carcinoma
- History of tuberculosis
- Ketogenic diet
- Smoking
- Anemia (hematocrit <33%)
- Neutrophil count <0,5x 109/l
- Thrombocytes <50x 109/l or bleeding disorders
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Number of Arms
Arms and Interventions
Participant Group / ArmParticipant Group / Arm |
Intervention / TreatmentIntervention / Treatment |
|---|---|
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Experimental: Tocilizumab
Participants will receive one 30 min intravenous infusion of tocilizumab/Actemra® (Roche).
The dose will be 8 mg/kg bodyweight or a maximum of 800mg.
Tocilizumab is dissolved in 100 mL 0.9% saline.
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The infusion of tocilizumab will antagonize IL-6 signaling for the duration of the study, allowing us to determine the role of IL-6 in regulating energy stores following acute exercise
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Placebo Comparator: Saline
As placebo, participants will receive one 30 min intravenous infusion of 100 mL 0.9% saline.
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The infusion of saline will serve as placebo for tocilizumab, allowing us to determine the role of IL-6 in regulating energy stores following acute exercise
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What is the study measuring?
Primary Outcome Measures
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
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Change in muscle glycogen content (mmol/kg/h)
Time Frame: Measured at 0, 120, 180 and 360 minutes
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Comparing change in muscle glycogen in the two groups from before exercise to immediately after exercise, and after 1 hour and 4 hours of recovery
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Measured at 0, 120, 180 and 360 minutes
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Change in muscle triglycerides content
Time Frame: Measured at 0, 120, 180 and 360 minutes
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Comparing change in muscle triglycerides in the two groups from before exercise to immediately after exercise, and after 1 hour and 4 hours of recovery
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Measured at 0, 120, 180 and 360 minutes
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Change in muscle expression of glucose transporter type 4 (GLUT4)
Time Frame: Measured at 0, 120 and 360 min
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Comparing muscle expression of GLUT4 before and immediately after exercise and 4 hours after recovery in the two groups
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Measured at 0, 120 and 360 min
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Change in muscle expression of fatty acid translocase (FAT/CD36)
Time Frame: Measured at 0, 120 and 360 min
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Comparing muscle expression of FAT/CD36 before and immediately after exercise and 4 hours after recovery in the two groups
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Measured at 0, 120 and 360 min
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Change in muscle expression of muscle fatty acid binding protein (FABPm)
Time Frame: Measured at 0, 120 and 360 min
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Comparing muscle expression of FABPm before and immediately after exercise and 4 hours after recovery in the two groups
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Measured at 0, 120 and 360 min
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Change in muscle expression of fatty acid transporter 4 (FATP4)
Time Frame: Measured at 0, 120 and 360 min
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Comparing muscle expression of FATP4 before and immediately after exercise and 4 hours after recovery in the two groups
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Measured at 0, 120 and 360 min
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Change in muscle expression of glycerol transporters
Time Frame: Measured at 0, 120 and 360 min
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Comparing muscle expression of glycerol transporters before and immediately after exercise and 4 hours after recovery in the two groups
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Measured at 0, 120 and 360 min
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Secondary Outcome Measures
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
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Change in glucose rate of appearance
Time Frame: Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing glucose rate of appearance during exercise and recovery in the two groups
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Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in glucose rate of disappearance
Time Frame: Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing glucose rate of disappearance during exercise and recovery in the two groups
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Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in glucose concentration
Time Frame: Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing glucose concentration during exercise and recovery in the two groups
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Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in glucose enrichment in intramuscular glycogen
Time Frame: Measured at 0, 120, 180 and 360 minutes
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Comparing glucose enrichment in intramuscular glycogen during rest, exercise and recovery in the two groups
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Measured at 0, 120, 180 and 360 minutes
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Change in intramuscular glucose concentration
Time Frame: Measured at 0, 120, 180 and 360 minutes
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Comparing intramuscular glucose concentration during rest, exercise and recovery in the two groups
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Measured at 0, 120, 180 and 360 minutes
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Change in glycogen fractional synthesis rate
Time Frame: Measured at 0, 120, 180 and 360 minutes
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Comparing intramuscular glycogen fractional synthesis rate during rest, exercise and recovery in the two groups
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Measured at 0, 120, 180 and 360 minutes
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Change in gylcerol rate of appearance
Time Frame: Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing gylcerol rate of appearance during rest, exercise and recovery in the two groups
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Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in gylcerol rate of disappearance
Time Frame: Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing gylcerol rate of disappearance during rest, exercise and recovery in the two groups
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Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in gylcerol concentration
Time Frame: Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing gylcerol concentration during rest, exercise and recovery in the two groups
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Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in palmitate rate of appearance
Time Frame: Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing palmitate rate of appearance during rest, exercise and recovery in the two groups
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Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in palmitate rate of disappearance
Time Frame: Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing palmitate rate of disappearance during rest, exercise and recovery in the two groups
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Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in palmitate concentration
Time Frame: Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing palmitate kinetics during rest, exercise and recovery in the two groups
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Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in palmitate oxidation
Time Frame: Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing palmitate oxidation during rest, exercise and recovery in the two groups
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Measured at -150, -60, -45, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in intramuscular palmitate content
Time Frame: Measured at 0, 120, 180 and 360 minutes
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Comparing intramuscular palmitate content during rest, exercise and recovery in the two groups
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Measured at 0, 120, 180 and 360 minutes
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Change in palmitate enrichment in intramuscular triglycerides
Time Frame: Measured at 0, 120, 180 and 360 minutes
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Comparing palmitate enrichment in intramuscular triglycerides during rest, exercise and recovery in the two groups
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Measured at 0, 120, 180 and 360 minutes
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Change in intramuscular triglycerides fractional synthesis rate
Time Frame: Measured at 0, 120, 180 and 360 minutes
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Comparing intramuscular triglycerides fractional synthesis rate during rest, exercise and recovery in the two groups
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Measured at 0, 120, 180 and 360 minutes
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Change in haemoglobin
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing haemoglobin during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in haematocrit
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing haematocrit during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in differential blood count
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing differential blood count during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in plasma IL-6 concentration
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing plasma IL-6 concentration during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in plasma TNF-alpha concentration
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing plasma TNF-alpha concentration during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in plasma IL-8 concentration
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing plasma IL-8 concentration during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in plasma IL-10 concentration
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing plasma IL-10 concentration during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in plasma IL-1beta concentration
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing plasma IL-1beta concentration during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in plasma IL-1Ra concentration
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing plasma IL-1Ra concentration during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in plasma IL-4 concentration
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing plasma IL-4 concentration during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in plasma sIL-6R concentration
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing plasma sIL-6R concentration during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in insulin
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing insulin during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in c-peptide
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing c-peptide during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in glucagon
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing glucagon during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in growth hormone (GH)
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing GH during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in adrenaline
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing adrenaline during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in noradrenaline
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing noradrenaline during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in cortisol
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing cortisol during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in total glucagon-like peptide-1 (GLP-1)
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing total GLP-1 during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in active GLP-1
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing active GLP-1 during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in gastric inhibitory peptide (GIP)
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing GIP during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in peptide YY (PYY)
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing PYY during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in leptin
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing leptin during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Change in triglycerides
Time Frame: Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Comparing triglycerides during rest, exercise and recovery in the two groups
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Measured at -150, -30, 10, 30, 60, 90, 120, 130, 150, 180, 210, 240, 300 and 360 minutes
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Other Outcome Measures
Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
|---|---|---|
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Change in muscle total antioxidant capacity (TAC)
Time Frame: Measured in muscle biopsies taken at 0, 120 and 360 minutes
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Comparing muscle total antioxidant capacity (TAC) at rest, after exercise and recovery in the two groups
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Measured in muscle biopsies taken at 0, 120 and 360 minutes
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Change in muscle superoxide levels (SOD)
Time Frame: Measured in muscle biopsies taken at 0, 120 and 360 minutes
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Comparing muscle superoxide levels (SOD) at rest, after exercise and recovery in the two groups
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Measured in muscle biopsies taken at 0, 120 and 360 minutes
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Excess post-exercise oxygen consumption
Time Frame: Measured at -130, 0, 60, 120, 180, 240, 300 and 360 minutes
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Comparing excess post-exercise oxygen consumption between the two groups
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Measured at -130, 0, 60, 120, 180, 240, 300 and 360 minutes
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Collaborators and Investigators
Sponsor
Sponsor
Investigators
Investigators
- Study Chair: Bente K Pedersen, MD, Rigshospitalet, Denmark
Study record dates
Study Major Dates
Study Start (Actual)
Study Start
Primary Completion (Actual)
Primary Completion
Study Completion (Actual)
Study Completion
Study Registration Dates
First Submitted
First Submitted
First Submitted That Met QC Criteria
First Submitted That Met QC Criteria
First Posted (Actual)
First Posted
Study Record Updates
Last Update Posted (Actual)
Last Update Posted
Last Update Submitted That Met QC Criteria
Last Update Submitted That Met QC Criteria
Last Verified
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
Other Study ID Numbers
- H-21063697
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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