Abstract des Autors

The energy cost of running on a treadmill was studied in different groups of men (565 men differing in age and training state; 291 trained athletes - TA, 205 leisure time sportsmen - LTS, and 69 untrained men - NTS). The mean energy cost of running (c - J/kg/m) was in TA 3.74 +/- 0.38, in LTS 3.96 +/- 0.36, and in NTS 4.05 +/- 0.36. These differences were statistically significant between TA and both nonathletes groups. The mean value of c for nonathletes (3.98 +/- 0.42) was significantly higher than in TA, and the mean values of c for all men followed was 3.85 +/- 0.44. Subjects with higher physical performance and thus probably with a higher training state have a lower energy cost of running, the adaptation to the running may be higher. Significant negative correlations were found between the c and VO2max/kg. Correlations between VO2max and c were found significant in all men in NTS, and in LTS and was determined nonsignificant in TA. We can conclude therefore that differences in physical performance in men are related to differences in energy cost of running (c) and to differences in VO2max/kg. The evaluation of c as additional characteristic during laboratory tests may help us to ascertain, along with other measures, not only the effectiveness of the physical training procedure, but also the predispositions for physical performance. Verf.-Referat