出版社：Japan Society of Physical Education, Health and Sport Sciences
摘要：For the first step of a study of selecting the optimal standards for physical fitness of youth, treadmill running time was measured as an index of endurance of 180 school boys and girls aged from 10 to 18. Each subject was asked to run until exhaustion at three different speeds on the treadmill with a 8.6% slope. The results obtained were as follows: 1) Average maximum endurance time on the treadmill was plotted against the speed related to age and sex. A gradual increase of the endurance running time on the treadmill in boys was shown, while in girls it stagnated before 15 years of age. Therefore, there appeared a great difference of endurance running time between boys and girls in advancing age. 2) Average endurance running time of boys aged 12, for example, was found to be about 4 min., 2 min. 8 sec., and 1 min. 21 sec. at the speed of 160 m/min., 180 m/min., and 200 m/min. respectively and exceeded that at girls aged 14. 3) The improvement of endurance running time in advancing age was closely related to the development of physique as height, weight and chest girth. 4) After training of 5 minutes running on the treadmill in every other day for four successive weeks, 5 normal boys of 5th grade of elementary school showed a remarkable increase of endurance running time together with an improvement of general activities in their school lives.
