DIFFERENCE IN PHYSIOLOGICAL RESPONSES TO AN INCREMENTAL RUNNING TEST BETWEEN MIDDLE- AND LONG-DISTANCE RUNNERS

Abstract

To obtain a viewpoint concerning evaluation of endurance type of athletes, we investigated the difference in physiological responses between middle- and long-distance runners in an incremental running test. Measurements were VO₂max and time of its appearance, change of VO₂ from 1.5 min before exhaustion to exhaustion (ΔVO₂), heart rate (HR), and blood lactate after exhaustion.
Results were as follows.
(1) The time of VO₂ max appearance in the middle distance runners was earlier than in the long distance runners.
(2) VO₂max was significantly higher in the long distance runners than in the middle distance runners.
(3) Blood lactate after exhaustion and HRmax were significantly higher in the middle distance runners than in the long distance runners.
(4) Blood lactate after exhaustion was significantly related to ΔVO₂ (r =-0.660, P<0.05) .
These findings suggest that the endurance type of athletes could be evaluated from the time of VO₂max appearance, blood lactate after exhaustion and HRmax in incremental running, and that VO₂max appearance may be effected by high blood lactate accumulation.