Abstract
[Purpose] The purpose of this study was to examine the respiratory and circulatory dynamics and subjective exercise intensity (RPE) during light-load resistance exercise with and without KAATSU and high-load resistance exercise without KAATSU, and to confirm the safety of KAATSU training.
[Method] Ten adult healthy males were included in this study. The trials consisted of 15 times x 3 sets of leg extension exercises with light-load (20% 1RM) with and without KAATSU and high- load (60% 1RM) without KAATSU. We evaluated respiratory and circulatory dynamics by using breath gas analysis and cardiac output measurement, and RPE of respiratory distress and lower limb fatigue in each trial.
[Results] The index of respiratory and circulatory dynamics was quite higher in high-load exercise than in the light-load exercise with and without KAATSU,but did not differ between with and without KAATSU in light-load resistance exercise. The RPE increased as the set progressed, and the RPE of the third set in the high-load without KAATSU was higher than in light-load resistance exercise with or without KAATSU.
[Conclusion] Light-load KAATSU training had less physical and subjective burden because the change in respiratory circulation and RPE was lower, compared with high-load resistance exercise.
