中距離走（1500m走）におけるピッチとストライドの変化と生理学的パラメーターの関係
1998 年 11 巻 1 号 p. 103-111
詳細
1998 年 11 巻 1 号 p. 103-111
The purpose of this study was firstly to investigate the relationship between the physiological parameters and the characteristics of running technique in middle distance running. The second purpose was to develop a running pace-maker and to estimate the pace-maker.
The subjects were trained male college runners (n=8).
Vo2max measured by increment exercise test ranged from 51.6 to 66.5 ml/min/kg with a mean of 59.6 ml/min/kg (SE±1.95). Measurements were obtained from the following specially designed 1500m running tests.
The test consisted of 5 x 1500m running trials over two days. On day 1, the subjects performed a 1500m running trial at their maximal effort and, the maximal mean velocity (Vmax) of each runner was calculated. On the next day, they were instructed to perform four 1500m runs at constant velocities equal to 80%, 85%, 90% and 95% of Vmax, respectively, with two hours rest interval in between. The constant velocities were controlled with the experimental apparatus. During each run, heart rate, split time of each 100m and the time to complete 20 strides were measured to determine the running velocity, the stride frequency and the stride length. Mixed arterial blood samples were taken at the end of each 1500m trial to evaluate blood lactate concentration.
Increases in the running velocity from 85% to 95% were achieved by a combination of increasing the stride frequency and the stride length. During the trial at the maximal effort, the velocity and the stride frequency similarly changed in each 100m. Moreover, lactate threshold, determined from the relationship between the blood lactate concentration and the velocity, approximately corresponded to the running velocity, and the characteristics of running technique were dynamically changed.
The pace-maker worked functionally.
