Physical Activity, Sport and Exercise (PHASE) Research Group, School of Allied Health (Exercise Science), Murdoch University, Perth, Western Australia, Australia.
Centre for Healthy Ageing, Murdoch University, Perth, Western Australia, Australia.
Eur J Sport Sci. 2024 Jun;24(6):703-712. doi: 10.1002/ejsc.12106. Epub 2024 Mar 28.
This study examined the impact of continuous blood flow restriction (BFR) during repeated-sprint exercise (RSE) on acute performance, peripheral, systemic physiological, and perceptual responses. In a randomized crossover design, 26 adult male semi-professional and amateur team-sport players completed two RSE sessions (3 sets of 5 × 5-s sprints with 25 s of passive recovery and 3 min of rest) with continuous BFR (45% arterial occlusion; excluding during between-set rest periods) or without (non-BFR). Mean and peak power output were significantly lower (p < 0.001) during BFR compared to non-BFR (d = 0.85 and 0.77, respectively). Minimum tissue saturation index during the sprints and rest periods was significantly reduced (p < 0.001) for BFR (d = 1.26 and 1.21, respectively). Electromyography root mean square was significantly decreased (p < 0.01) for biceps femoris and lateral gastrocnemius muscles during BFR (d = 0.35 and 0.79, respectively), but remained unchanged for the vastus lateralis muscle in both conditions. Oxygen consumption and minute ventilation were significantly reduced (both p < 0.01) for BFR (d = 1.46 and 0.43, respectively). Perceived limb discomfort was significantly higher (p < 0.001) for BFR (d = 0.78). No differences (p > 0.05) in blood lactate concentration or rating of perceived exertion were observed between conditions. Blood flow-restricted RSE reduced performance and likely increased the physiological and perceptual stimulus for the periphery with greater reliance on anaerobic glycolysis, despite comparable or decreased systemic demands.
本研究旨在探讨在重复冲刺运动（RSE）期间持续血流限制（BFR）对急性运动表现、外周、全身生理和感知反应的影响。采用随机交叉设计，26 名成年男性半职业和业余团队运动运动员完成了两次 RSE 训练（3 组 5×5 秒冲刺，25 秒被动恢复和 3 分钟休息），分别采用持续 BFR（动脉闭塞 45%；不包括组间休息期间）或不采用 BFR（非 BFR）。与非 BFR 相比，BFR 时平均和峰值功率输出显著降低（p<0.001；d 值分别为 0.85 和 0.77）。冲刺和休息期间的最小组织饱和度指数也显著降低（p<0.001；BFR 时的 d 值分别为 1.26 和 1.21）。BFR 时股二头肌和外侧比目鱼肌的肌电图均方根显著降低（p<0.01；d 值分别为 0.35 和 0.79），但在两种情况下，股外侧肌的肌电图均方根均无变化。BFR 时耗氧量和分钟通气量显著降低（均 p<0.01；d 值分别为 1.46 和 0.43）。BFR 时肢体不适感明显更高（p<0.001；d 值为 0.78）。两种情况下血乳酸浓度或主观用力程度评分均无差异（p>0.05）。血流限制的 RSE 降低了运动表现，可能增加了外周的生理和感知刺激，同时更多地依赖于无氧糖酵解，尽管全身需求相当或降低。
