High-load blood flow restriction resistance training increased 1RM leg half-squat by 28.6% and significantly improved vertical jumping performance compared to low-load blood flow restriction training.
RCT (n=18)
Open-label
Randomly assigned
No
Does blood flow restriction resistance training under different external loads improve muscle strength and vertical jumping performance in well-trained volleyball players?
High-load blood flow restriction resistance training increases muscle strength and vertical jumping performance to a greater extent compared to low-load blood flow restriction and high-load resistance training without restriction in volleyball players.
Absolute Event Rate: 28.6% vs 9.9%
p-value: p=0.019
Purpose To examine the effect of blood flow restriction resistance training under different external loads on the muscle strength and vertical jumping performance in volleyball players. Methods 18 well-trained collegiate male volleyball players were randomly divided into 3 groups: high-load resistance training group (HL-RT, 70% 1RM, n = 6), low-load blood flow restriction resistance training group (LL-BFR-RT, 30% 1RM, 50% arterial occlusion, n = 6), and high-load blood flow restriction resistance training group (HL-BFR-RT, 70% 1RM, 50% arterial occlusion, n = 6). Participants performed leg half-squat exercise 3 times per week for 8 weeks. Measurements of Isokinetic peak torque of knee extension and flexion, 1RM leg half-squat, squat jump, and 3 footed take-off were obtained before and after training. A two-way repeated-measures analysis of variance was used to examine differences among the 3 groups and between the 2 testing time (pre-test vs post-test). Results (1) The HL-RT group was significantly greater in muscle strength than that in the LL-BFR-RT group ( P .05). (2) Improvement in muscle strength and vertical jumping performance was significantly greater in the HL-BFR-RT group than that in the LL-BFR-RT group ( P <.05). (3) The HL-BFR-RT group had greater but not significant improvement in muscle strength and vertical jumping performance than that in the HL-RT group. Conclusions Although increases in muscle strength were observed between training groups, HL-BFR-RT increased not only muscle strength but vertical jumping performance to a greater extent compared to LL-BFR-RT and HL-RT.
Wang et al. (Fri,) conducted a rct in Healthy well-trained collegiate male volleyball players (n=18). High-load blood flow restriction resistance training (HL-BFR-RT) vs. Low-load blood flow restriction resistance training (LL-BFR-RT) and High-load resistance training (HL-RT) was evaluated on 1RM leg half-squat increase (p=0.019). High-load blood flow restriction resistance training increased 1RM leg half-squat by 28.6% and significantly improved vertical jumping performance compared to low-load blood flow restriction training.