Anaerobic threshold, O2 deficit and response time of O2 uptake in long, middle and short distance runners.
- VernacularTitle:長・中・短距離走者の無気的作業いき値，酸素債および酸素摂取量の反応時間
- Author:
TOKUO YANO
- Publication Type:Journal Article
- Keywords:
Anaerobic threshold;
O2 deficit;
time constant of Vo2
- From:Japanese Journal of Physical Fitness and Sports Medicine
1985;34(3):176-182
- CountryJapan
- Language:Japanese
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Abstract:
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), O2deficit at AT (AT-O2df), and time constant of Vo2 (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-Vo2of long distance runners was the highest followed by the values of middle distance runners and sprinters, successively. The AT-Vo2per weight and per Vo2max also decreased in the same order.
2) AT-O2df 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-Vo2 (difference between AT-Vo2and Vo2at rest) related to neither AT-O2df nor τ. However, the ratio of AT-O2df/τ significantly related to the ΔAT-Vo2 (r=0.795, n=16, p<0.001) . From these results, the highest values of AT-Vo2obtained in long distance runners would be due to both high AT-O2df and short τ.
