Simpson Charles W C, Moore Katelyn S, Smith Hoani K, Coskun Betul, Hamlin Michael J
Department of Tourism, Sport and Society, Lincoln University, Christchurch, New Zealand.
Department of Biochemistry, School of Biological Sciences, University of Canterbury, Christchurch, New Zealand.
J Sports Sci. 2025 Oct;43(19):2194-2203. doi: 10.1080/02640414.2025.2457859. Epub 2025 Jan 30.
To determine muscle oxygenation with continuous blood flow restriction (BFR) training in high load (HL), 80% one-repetition maximum (1RM) and low load (LL), 30% 1RM squat exercises. In week-2 of a 4-week resistance training programme as part of their 3-set training routine, two groups of athletes ( = 4 each), one performing HL training with low cuff pressure (20% arterial occlusion pressure (AOP)), the other LL training with high cuff pressure (60% AOP) had muscle oxygenation assessed with near-infrared spectrophotometry (NIRS), arterial oxygen saturation (SPO), heart rate (HR), barbell velocity and ratings of perceived exertion (RPE) during barbell back squats (BBS). Changes in the vastus lateralis oximetry were compared to pre- and post-training squat (1RM). Across athletes, there were significant associations between two pre-set-3 exercise variables and post-training 1RM, Tissue Saturation Index (TSI) (R = 0.92, < 0.0002) and HHb concentration (R = 0.79, < 0.003). Generalised regression models indicated that TSI % and HHb concentrations before and after set 3 timepoints were significant predictors of post-training 1RM in the LL group (R = 0.99, BIC = -24.9). Well-tolerated continuous LL-BFR training provided greater increases in strength than HL-BFR in athletes.
为了确定在高负荷（HL，80%的一次重复最大值（1RM））和低负荷（LL，30%的1RM）深蹲练习中进行持续血流限制（BFR）训练时的肌肉氧合情况。在为期4周的阻力训练计划的第2周，作为他们3组训练常规的一部分，两组运动员（每组 = 4人），一组以低袖带压力（20%动脉闭塞压力（AOP））进行HL训练，另一组以高袖带压力（60% AOP）进行LL训练，在杠铃后蹲（BBS）期间用近红外分光光度法（NIRS）、动脉血氧饱和度（SPO）、心率（HR）、杠铃速度和主观用力程度评级（RPE）评估肌肉氧合情况。将股外侧肌血氧饱和度的变化与训练前和训练后的深蹲（1RM）进行比较。在所有运动员中，两个预设的3组运动变量与训练后的1RM、组织饱和度指数（TSI）（R = 0.92，< 0.0002）和HHb浓度（R = 0.79，< 0.003）之间存在显著关联。广义回归模型表明，LL组中第3组时间点前后的TSI%和HHb浓度是训练后1RM的显著预测指标（R = 0.99，BIC = -24.9）。在运动员中，耐受性良好的持续LL - BFR训练比HL - BFR训练能带来更大的力量增长。
