The present study aimed to evaluate the effects of ischemic intra-conditioning applied during rest intervals on 30 m sprint performance. Thirty-four trained male (n = 12) and female (n = 22) track and field and rugby athletes volunteered to participate in the study (age = 19.6 ± 4 years; training experience = 5.3 ± 1.9 years). In a randomized and counterbalanced order, participants performed six sets of 30 m sprints under three different testing conditions: without ischemic intra-conditioning, and with ischemic intra-conditioning at 60% or 80% arterial occlusion pressure applied bilaterally before the first trial of the sprint and during the rest periods between all sprint trials. During experimental sessions, subjects perform 6 × 30 m sprints with a 7 min rest interval between attempts. The cuffs were applied following a 1 min rest period and lasted for 5 min before being released at the 6th minute to allow for reperfusion (1 min + 5 min ischemic intra-conditioning + 1 min reperfusion). The two-way repeated measures ANOVA did not show statistically significant condition × set interaction for time of the sprint (p = 0.06; η2 = 0.05). There was also no main effect of ischemic intra-conditioning for any condition (p = 0.190; η2 = 0.05). This study indicates that ischemic intra-conditioning did not enhance the performance of 30 m sprints performed by athletes. However, ischemic intra-conditioning did not decrease performance either.

Department of Medical Sciences The Wojciech Korfanty School of Economics 40 065 Katowice Poland

Faculty of Physical Education and Sport Charles University 500 05 Prague Czech Republic

Faculty of Physical Education Gdansk University of Physical Education and Sport 80 336 Gdansk Poland

Institute of Sport Sciences Jerzy Kukuczka Academy of Physical Education in Katowice 40 065 Katowice Poland

Provita Zory Medical Center 44 240 Zory Poland

The Human Performance Mechanic CUNY Lehman College Bronx New York NY 10468 USA

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