Body Mass Index was calculated as the ratio of body weight to height square (Heyward & Stolarczyk 1996). VO2max was measured by the standard Bruce Protocol (Bruce, Kusumi & Hosmer 1973) on a Jager LE 200 CE (Hochberg, Germany) treadmill. Measurements were performed with the VIASYS Healthcare ergospirometry line using the MasterScreen CPX (Wuerzburg, Germany) device. Results were presented in ml/kg/min (milliliters of oxygen per kilogram of body weight per minute). Isokinetic quadriceps strength was recorded with the Biodex System Dynamometer (Biodex Medical Inc, Shirley, NY). Participants were placed in a comfortable position that allowed unrestricted motion of the knee from 90 degrees of flexion to terminal extension on a bicycle ergometer, and asked to warm-up for five minutes at which point they stretched their extremities. Before the test trials, participants were instructed to perform their maximum efforts. Then five isokinetic concentric knee flexion and extension at 60°/sec with their dominant legs were recorded. After, peak torque to body weight ratio (PT/BW) was measured.