100
Participants
Start Date
January 24, 2018
Primary Completion Date
December 30, 2028
Study Completion Date
December 30, 2028
Exercise
After an initial maximal graded exercise test to determine maximal oxygen uptake and peak cycling power, healthy participants will undergo a 20-minute graded exercise test at intensities corresponding to 50, 60, 70 and 80% VO2max (5-minutes per stage)
Isoproterenol
To determine if pharmacological activation of beta-adrenergic receptors evokes an immune respponse akin to exercise, healthy participants will receive an intravenous infusion of isoproterenol (50ng/kg/min)
Placebo
Healthy participants will consume the placebo 2-3h prior to completing a 20-minute graded exercise test at intensities ranging from 50-80-% of the maximal oxygen uptake
Bisoprolol Fumarate Tablet 10 mg
Healthy participants will consume a 10mg Bisoprolol Fumerate tablet 2-3h prior to completing a 20-minute graded exercise test at intensities ranging from 50-80-% of the maximal oxygen uptake
Nadolol (1 x 80 mg) Tablets (Invamed, Inc)
Healthy participants will consume a 80mg Nadolol tablet 2-3h prior to completing a 20-minute graded exercise test at intensities ranging from 50-80-% of the maximal oxygen uptake
Carvedilol 50 mg
Healthy participants will consume a 50mg Carvedilol tablet 2-3h prior to completing a 20-minute graded exercise test at intensities ranging from 50-80-% of the maximal oxygen uptake
Roflumilast 500 Mcg Oral Tablet
Healthy participants will consume a 500mcg Roflumilast tablet and a 10mg Bisoprolol tablet 2-3h prior to completing a 20-minute graded exercise test at intensities ranging from 50-80-% of the maximal oxygen uptake
RECRUITING
The University of Arizona, Tucson
National Cancer Institute (NCI)
NIH
University of Arizona
OTHER