The Acute Effect of Different Blood Flow Restrictions on Strength Performance in Multi-joint Movements
Project no. 22653 · Status: Kapanmış · 2021
Summary
<p>Blood flow restriction (BFR) training, also known as occlusion training, involves restricting venous flow in a muscle by applying an external constrictive device to mechanically compress the vasculature. The aim of the present study is to determine the acute effects of strength endurance performance with multi-joint exercises and two different short-term blood flow restriction percentages. The study was participated by 17 males (age = 24.94 ± 5.64 years; body mass = 82.08 ± 9.31 kg; height = 180.9 ± 6.52 cm). Cuff pressure was applied at 80% and 150% of the artery occlusion pressure (AOP) value for the exercise. Strength levels of each participant were determined by 1-TM and the three test conditions were evaluated with “all-out” set as no BFR (BFR0), (BFR80) and (BFR150).</p><p>According to the repeated ANOVA results of BFR0- BFR80, significant differences were found between applications in terms of number of repetitions, mean power, mean speed and perceived difficulty. Compared with BFR0, the repeated ANOVA results of BFR150 showed significant difference between the applications in terms of the number of repetitions, mean power (watt), mean speed. Similarly, according to the BFR80- BFR150 repeated ANOVA results, a significant difference was observed in the perceived difficulty between the applications.</p><p>In conclusion, after a back squat exercise performed at different BFR percentages, differences were seen in the number of repetitions, mean power, mean speed and perceived difficulty levels. The results were statistically similar between BFR80 and BFR150 except for the number of repetitions. It was seen that the athletes increased the number of repetitions in the all-out set performed with BFR compared to the one with no BFR. These findings indicate that 80% AOP is more preferable as it is sufficient to obtain acute results. </p>