The present study was designed to examine the effects of endurance training on the renal clearances during submaximal exercise. Two healthy male subjects followed a program of endurance training on a bicycle ergometer for 10 weeks. One subject had taken exercise at 720kpm/min for 30 minutes a day twice a week and the other at 900kpm/min 4 times a week. Their glomerular filtration rate didn't reduced during exercise at the intensity of the training.
　Each underwent incremental exercise tests to maximum before and after the programmed training. Further renal clearances of 3 substances, paraaminohippurate, thiosulfate and instrinsic creatinine were measured during three different submaximal exercise test before and after the training.
　Slight increase in VO₂max and slight decrease in VO₂ were observed at submaximal tests after the training. These resulted in the decrease in %VO₂max during the same absolute work load at different intensities after the training. All renal clearances improved during exercise at the same work load, however the relationship between %VO₂max and renal clearances of each subject showed no difference after the training. The improved VO₂max and VO₂ after training were likely to reduce negative effects on the renal clearance at the same work load.

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