The impact of blood flow restriction combined with variable resistance training at different loads on lower limb strength and explosiveness in collegiate basketball players.

This study compared the effects of an 8-week program of low-load blood flow restriction training combined with chain-based variable resistance training (BFR-VRT) and high-load chain-based variable resistance training (VRT) on lower-limb performance in male college basketball players. A total of 27 players were randomly assigned to the BFR-VRT group (n = 9), the variable resistance training group (n = 9), or a control group (n = 9). The BFR-VRT protocol used pneumatic cuffs applied to the proximal thighs, with training pressure set at 180 mmHg, and combined a 10% 1RM barbell load with 10%-30% 1RM from chains, whereas the VRT protocol consisted of a 55% 1RM barbell load plus 10%-30% 1RM from chains. The control group did not receive any resistance training. Repeated-measures Repeated-measures ANOVA showed significant within-group improvements in SQ-1RM, LTC, RTC, countermovement jump, squat jump, DJ-RSI, standing long jump, and 30-m in both the BFR-VRT and VRT groups (all p < 0.05), whereas the CON group showed no significant change (p > 0.05). Between-group comparisons indicated no significant differences among the three groups on these outcomes (all p > 0.05). In conclusion, both BFR-VRT and VRT improved lower-limb performance; under a lower external load, BFR-VRT showed effects comparable to, or trending greater than, VRT on certain performance measures. Clinical Trial Registration: https://www.chictr.org.cn/showprojEN.html?proj=201896, identifier ChiCTR2400086132.