Kulik, A., Zaderykhin, O., Shulgin, V., Martynenko, A. and IabluchanskyiМ. 1. CAPTURE AND WITHHOLDING OF HEART RATE VARIABILITY INDEXES WITH PACED BREATHING IN HEALTHY VOLUNTEERS. The Journal of V. N. Karazin Kharkiv National University, series "Medicine". 19 (1), 46-52.