Air Force Photos

Studying human performance
Kassi Micak participates in the citrulline malate study conducted by Air Force Research Laboratory officials Aug. 19 at Brooks City-Base, Texas. Her perceived level of exertion is evaluated while Tech. Sgt. Darci Rose, an aerospace physiology technician, records exertion, lactates, VO2 max and heart rate during the study. Ms. Micak, a competitive cyclist based in San Antonio, volunteered for the study. (U.S. Air Force photo/Steve Thurow)

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