In addition to investigating differences between athletes by position, this study also stratified athletes by year, starter status, and race. Theoretically, upperclassmen who have regularly participated in a collegiate strength training program, and starters should have greater LM than underclassmen and NS (14). A recent study in Division I football players by Jacobson et al. (14) determined that in 4 years, OL, DL, DB, and WR increased body mass and strength, OL and DL decreased %fat, and DB and WR maintained % fat values. However, there were no significant differences found between athletes’ classified year or starter status in this study. Therefore, it may be valuable to assess longitudinal changes that occur within each individual as they progress through their collegiate career. Previous studies have also found significant differences in intramuscular fat and muscle composition between black and white individuals (5,21); however, no statistically significant racial differences were observed in this study. Similar results were reported by Abe et al. (1) who found no muscle architectural differences in muscle thickness, pennation angle, and fascicle length of the VL between black and white collegiate football players. This may suggest that chronic resistance training and conditioning may overcome racial differences of muscle quality in athletes, or it could be related to the homogeneity of our population (i.e., all football). Although not statistically significant, there may be a clinical significance of %fat measures stratified by race (W: 19.3 6 4.0%; B: 16.6 6 4.8%).