Bicycle exercise tests were carried out in 2 weeks -- 9 months after successful stent implantation in 1463 patients. Result of exercise test was positive in 472 and negative -- in 991 patients. At control angiography which was performed within 1 week after exercise test binary in-stent restenosis >50% was found in 326 of 1463 patients. Sensitivity, specificity, predictive value of positive and negative results of exercise test for the presence of restenosis were 85, 83, 59 and 5%, respectively.