KAATSU-training with lower intensity and loading is considered to have significant effects on our skeletal muscles. In this study, ten-healthy University male students were performed two times of muscular training
with the same volume, frequency, intensity, and period with or without KAATSU, to estimate the effects of KAATSU on muscle power and muscle volume and area. Following the training with KAATSU performed by 20% of 1 repetition maximum for 4 weeks, the increases in cross-sectional area and the volume were observed in upper-arm muscles, as well as the increase in muscle strength. In contrast, those changes could not be obtained following the training without the KAATSU. The results indicate that the muscular training with KAATSU is useful for increase the muscle power and
volume, even in lower loading and short period.