Clinical Trial
Study Details
A single bout of standardized, moderate exercise
This study measures the effect of exercise on a variety of biomarkers in blood and urine selected to evaluate the physiological pathways of hemolysis, myolysis, thrombosis, inflammation, and renal function in subjects with sickle cell trait. These pathways have been shown to be associated with adverse events in athletes and warfighters with SCT upon protracted, repeated, strenuous exertion. Changes in biomarkers post-exercise compared to pre-exercise (and compared to healthy controls) suggest activation of the associated pathway(s) which may contribute to exercise-related events in athletes and warfighters and subclinical complications in non-athletes.
Study Overview
Subjects with sickle cell trait and healthy controls will be subjected to a single bout of moderate, controlled exercise on a treadmill. Blood and urine samples will be collected before exercise, immediately after exercise, and 24 hours after exercise. Fifteen biomarkers, three selected to evaluate each of the five physiologic pathways previously listed, will be tested at each of the three time points. Abnormal biomarkers before exercise suggest chronic pathway activation while exacerbated levels after exercise suggest further activation stimulated by exercise. Biomarker levels 24 hours post-exercise will be used to evaluate continued pathway activation or pathway recovery. By definition, 95% of health controls will show normal biomarker levels pre-exercise and biomarker patterns post-exercise will serve as the expected standard by which to compare the test subjects.
Contacts and Locations
Saint Louis University
St Louis, Missouri 63104-1111
United States