Subjects were long distance runners (n=6), middle distance runners (n=6), and sprinters (n=4) . They exercised in incremental exercise and steady state exercise. The anaerobic thershold (AT), O
2deficit at AT (AT-O
2df), and time constant of Vo
2 (τ) which were obtained from these exercise tests were compared among three groups of runners, and the interrelationship of three parameters was elucidated. The results were as follows.
1) AT-Vo
2of long distance runners was the highest followed by the values of middle distance runners and sprinters, successively. The AT-Vo
2per weight and per Vo
2max also decreased in the same order.
2) AT-O
2df per weight of long distance runners was as high as that of middle distance runners, and was significantly higher than that of sprinters.
3) τ of long distance runners was shorter than that of middle distance runners, but was not significantly shorter than that of sprinters. τ of long distance runners was shorter than the reported one of untrained people.
4) ΔAT-Vo
2 (difference between AT-Vo
2and Vo
2at rest) related to neither AT-O
2df nor τ. However, the ratio of AT-O
2df/τ significantly related to the ΔAT-Vo
2 (r=0.795, n=16, p<0.001) . From these results, the highest values of AT-Vo
2obtained in long distance runners would be due to both high AT-O
2df and short τ.
抄録全体を表示