Effects of blood flow restriction moderate intensity interval training on aerobic and anaerobic capabilities and lower extremity performance in male college basketball players

This study investigated whether blood flow restriction moderate-intensity interval training (BFR-MIIT) could achieve or surpass the training effects of high-intensity interval training (HIIT) at lower training intensities. A total of 33 male college basketball players completed the trial and were randomly assigned to the BFR-MIIT group (n = 17) and the HIIT group (n = 16). Both groups performed the 4 × 4 "Norwegian" training method, with the BFR-MIIT group engaging in moderate-intensity training and the HIIT group in high-intensity training. Assessments included the Wingate Anaerobic Power Test, the multistage 20-meter shuttle run test, and tests of jumping ability (countermovement jump (CMJ), squat jump (SJ), and drop jump (DJ)), sprinting ability (30-meter sprint), and change of direction ability (505 test). Post-intervention, both the BFR-MIIT group (p < 0.001, ES=-1.199) and the HIIT group (p = 0.02, ES=-0.526) showed significant and equivalent improvements in VO_2max. However, neither group significantly improved peak power (PP) or relative peak power (PP/kg). The BFR-MIIT group demonstrated superior improvements in lower extremity performance compared to the HIIT group in CMJ (p = 0.007; ES=-0.570), SJ (p < 0.001; ES=-0.537), DJ (p < 0.001; ES=-0.805), and the 505 test (p < 0.001; ES = 1.708). Additionally, across four measurements of the Rate of Perceived Exertion (RPE), the BFR-MIIT group reported significantly lower RPE than the HIIT group (p < 0.05). In conclusion, compared to HIIT, BFR-MIIT can achieve equivalent improvements in aerobic capacity at lower training intensities and perceived exertion while yielding better improvements in lower extremity performance.