Introduction: The aims of this study were 1) to describe the relationship between BMI and SAT-Top of young athletes and non-athletic controls 2) to compare body composition among athletes in sports with different bodily requirements, and 3) to get an outline of the nutritive profiles of athletes and non-athletes. Methods: The study included 83 students, 36 females (13.57.57), and 42 males (13.53.67) who were stratified into the two groups ?athletes? (n=60) and ?non-athletes?(n=23), as well as into the four subgroups ski jumpers (n=12), other lean-sport athletes (n=15), non-lean-sport athletes (n=23) and non-athletes. Data on height, sitting height, weight, SAT?Top and circumferences of the upper arm, waist, hip, thigh and calf were collected. BMI was calculated and TBF was measured by the Lipometer. Information about food intake and nutritional behaviour was obtained by using the 24h-recall and the EWI-C-questionnaire. Results: BMI was similar in women and men (f 20.2 2.6, m 20.5 4), as well as in athletes and non-athletes (p>.1), however, women showed a higher TBF compared to men (p<.01), and athletes showed a significantly lower TBF compared to non-athletes (p<.01). Among the group of ski jumpers the lowest amount in TBF was found (p<.01). Non-athletes were showing significantly more concerns about eating and weight (p=.027), tended more to dietary restriction (p=.027), and were showing more fear of weight gain (p=.007). Conclusion: Relevant differences concerning TBF and nutritional profiles in young athletes vs. non-athletes were found. This strengthens the importance of nutritive aspects in teaching and training programs.