The purpose of this Study is to investigate the effects of 3-minutes training on student's physical fitness and exercise ability.
　The training was given in 2 or 3 units of physical education lesson per week, and the physical fitness and exercise ability was compared between groups of the trained and the un-trained.
　The results were as follows:
　1) The physical fitness and exercise ability of the student in HAKUO high school in general was below the Tokyo student's level.
　2) Physical fitness and exercise ability in the trained group was slightly over the Tokyo student's level.
　3) A significant increase by 7.3-21.2% (p<0.01) was found in the back strength of HAKUO high school students, which is to be regarded as an effect of the 3-minutes training for half a year.

DESCENTE SPORTS SCIENCE Vol.10/THE DESCENTE AND ISHIMOTO MEMORIAL FOUNDATION FOR THE PROMOTION SPORTS SCIENCE