Low‐load blood‐flow‐restriction resistance training (LL‐BFR‐RT) is gaining popularity, but its physiological effects remain unclear. This study aimed to compare LL‐BFR‐RT with low‐load resistance exercise (LL‐RT) and high‐load resistance exercise (HL‐RT) on metabolism, electrolytes, and ions in the lower extremities by invasive catheter measurements, which are crucial for risk assessment. Ten healthy men (27.6 ± 6.4 years) completed three trials of knee‐extensor exercises with LL‐RT (30% 1RM), LL‐BFR‐RT (30% 1RM, 50% limb occlusion pressure), and HL‐RT (75% 1RM). The exercise protocol consisted of four sets to voluntary muscle failure with 1 min of rest between sets. Blood gas analysis was collected before, during, and after each trial through intravenous catheters at the exercising leg. LL‐BFR‐RT had lower total workload (1274 ± 237 kg, mean ± SD) compared to LL‐RT (1745 ± 604 kg), and HL‐RT (1847 ± 367 kg, p < 0.01), with no difference between LL‐RT and HL‐RT. Pain perception did not differ significantly. Exercise‐induced drop in oxygen partial pressure, lactate accumulation and electrolyte shifts (with increased [K+]) occurred during under all conditions (p < 0.001). Creatine kinase and lactate dehydrogenase increased significantly 24‐ and 48‐h postexercise under all three conditions (p < 0.001). This study, using invasive catheter measurements, found no significant differences in metabolic, ionic, and electrolyte responses among LL‐BFR‐RT, LL‐RT, and HL‐RT when exercised to voluntary muscular failure. LL‐BFR‐RT reduced time to failure without specific physiological responses.

中文翻译：

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有和没有血流限制和高负荷阻力训练对力竭低负荷力量训练的代谢、离子和电解质反应的比较


低负荷血流限制阻力训练（LL-BFR-RT）越来越受欢迎，但其生理效应仍不清楚。本研究旨在通过侵入性导管测量比较 LL-BFR-RT 与低负荷阻力运动 (LL-RT) 和高负荷阻力运动 (HL-RT) 对下肢代谢、电解质和离子的影响，对于风险评估至关重要。十名健康男性（27.6 ± 6.4 岁）完成了 LL-RT（30% 1RM）、LL-BFR-RT（30% 1RM、50% 肢体闭塞压力）和 HL-RT（75 % 1RM）。锻炼方案包括四组至随意性肌肉衰竭，组间休息 1 分钟。在每次试验之前、期间和之后通过运动腿的静脉导管收集血气分析。与 LL-RT (1745 ± 604 kg) 和 HL-RT (1847 ± 367 kg, p < 0.01) 相比，LL-BFR-RT 的总工作量较低 (1274 ± 237 kg，平均值 ± SD)，但没有差异LL-RT 和 HL-RT 之间。疼痛感知没有显着差异。在所有条件下，运动引起的氧分压下降、乳酸积累和电解质转移（[K+] 增加）均发生 (p < 0.001)。在所有三种条件下，肌酸激酶和乳酸脱氢酶在运动后 24 小时和 48 小时均显着增加 (p < 0.001)。这项研究使用侵入性导管测量，发现当运动至自愿性肌肉衰竭时，LL-BFR-RT、LL-RT 和 HL-RT 之间的代谢、离子和电解质反应没有显着差异。 LL-BFR-RT 在没有特定生理反应的情况下缩短了失效时间。