The association of cardiorespiratory fitness, body mass index, and age with testosterone levels at screening of healthy men undergoing preventive medical examinations: The Cooper Center Longitudinal Study

Laura F. DeFina, Nina B. Radford, David Leonard, Rick K. Wilson, Tyler C. Cooper, S. Michael Clark, Benjamin L. Willis, Gloria L. Vega, Carolyn E. Barlow, Stephen W. Farrell, Larry W. Gibbons, Bulent O. Yildiz, Ugis Gruntmanis