Abstract
The purpose of this study was to investigate the influence of Judo practice on cardiorespiratory and blood properties in summer season which is relatively a hot environment. Subject was 4 young male Judo players. Average of VO2max among 4 subjects was 4.071/min,53.6ml/kg/min. Average value of heart rate during practice was from 154 to 178 beats/min. Predicted oxygen uptake during practice of Kakari-Renshu, Randori, additional practice for Newaza and Newaza was represented percentage of VO2max,82.9%,85.0%,80.4%, and 82.9%, respectively. But it is difficult to investigate the work intensity because of exercise mode of Judo was included factor of intermittent exercise, indeed it was considerable possibility that intensity was the lower than result of this study. As a result of blood properties, although we observed weight loss with much use of skeletal muscle for practice of Judo, we didn't find the influence of Judo practice on cardiorespratory and blood properties in summer season.
