The effect of ischemic preconditioning with different frequency on simulated judo protocol and its-induced apoptosis

Ischemic preconditioning (IPC) has been used to improve exercise performance, but the effect of different frequency on judo performance and its role in protecting against judo exercise-induced muscle damage is still unclear.

The purpose of this study was to determine the effect of different frequency of IPC on simulated judo competition and match-induced apoptosis in judo athletes.

In a crossover study, 12 men judokas participated in this study. Each subject was randomized in four conditions: IPC in one session (low frequency), IPC in consecutive three sessions (high frequency), one non-pressure session and repeated non-pressure sessions. Three simulated competitions with an interval of 5 minutes and a special judo test (SJFT) 5 hours after last competition were performed in per session. IPC consisted of four 5-minute cycles of ischemia, followed by five minutes of perfusion. Pre and post-judo competition, blood sample were taken. One-way repeated measures ANOVA and Benferroni post-hoc test were used.

The results showed that high dose IPC resulted in a significant improvement in total throws of SJFT (P≤0.05). The judo competition protocol increased serum Bax. The serum Bcl-2 was significantly higher in low and high doses of IPC than other condition (P≤0.05).

In conclusion, high frequency of IPC appear to have a more effect on the specific performance of judokas. frequency -independent IPC can improve apoptosis following judo competition.