Exercise Physiology Intervention and Collaboration Laboratory, School of Kinesiology and Physical Therapy, Division of Kinesiology, University of Central Florida, Orlando, Florida.
Department of Kinesiology, Laval University, Quebec, Canada.
J Strength Cond Res. 2023 Oct 1;37(10):e546-e554. doi: 10.1519/JSC.0000000000004518. Epub 2023 Aug 25.
Wizenberg, AM, Gonzalez-Rojas, D, Rivera, PM, Proppe, CE, Laurel, KP, Stout, JR, Fukuda, DH, Billaut, F, Keller, JL, and Hill, EC. Acute effects of continuous and intermittent blood flow restriction on sprint interval performance and muscle oxygen responses. J Strength Cond Res 37(10): e546-e554, 2023-This investigation aimed to examine the acute effects of continuous and intermittent blood flow restriction (CBFR and IBFR, respectively) during sprint interval training (SIT) on muscle oxygenation, sprint performance, and ratings of perceived exertion (RPE). Fifteen men (22.6 ± 2.4 years; 176 ± 6.3 cm; 80.0 ± 12.6 kg) completed in random order a SIT session with CBFR, IBFR (applied during rest), and no blood flow restriction (NoBFR). Each SIT session consisted of two 30-second all-out sprint tests separated by 2 minutes. Peak power (PP), total work (TW), sprint decrement score (S dec ), RPE, and muscle oxygenation were measured during each sprint. A p value ≤0.05 was considered statistically significant. PP decreased to a greater extent from sprint 1 to sprint 2 during CBFR (25.5 ± 11.9%) and IBFR (23.4 ± 9.3%) compared with NoBFR (13.4 ± 8.6%). TW was reduced similarly (17,835.6 ± 966.2 to 12,687.2 ± 675.2 J) from sprint 1 to sprint 2 for all 3 conditions, but TW was lower (collapsed across time) for CBFR (14,320.7 ± 769.1 J) than IBFR (15,548.0 ± 840.5 J) and NoBFR (15,915.4 ± 771.5 J). There were no differences in S dec (84.3 ± 1.7%, 86.1 ± 1.5%, and 87.2 ± 1.1% for CBFR, IBFR, and NoBFR, respectively) or RPE, which increased from sprint 1 (8.5 ± 0.3) to sprint 2 (9.7 ± 0.1). Collective muscle oxygenation responses increased across time and were similar among conditions, whereas increases in deoxy[heme] and total[heme] were greatest for CBFR. Applying BFR during SIT induced greater decrements in PP, and CBFR resulted in greater decrements in work across repeated sprints. The larger increases in deoxy[heme] and total[heme] for CBFR suggested it may induce greater metabolite accumulation than IBFR and NoBFR when combined with SIT.
威森伯格、冈萨雷斯-罗哈斯、里维拉、普罗普、劳雷尔、斯特奥特、福田、比洛特、凯勒和希尔。急性连续和间歇性血流限制对冲刺间隔性能和肌肉氧合反应的影响。J 力量与调理研究 37（10）：e546-e554，2023-本研究旨在探讨在冲刺间隔训练（SIT）期间连续和间歇性血流限制（CBFR 和 IBFR，分别）对肌肉氧合、冲刺性能和感知用力（RPE）的急性影响。15 名男性（22.6 ± 2.4 岁；176 ± 6.3 厘米；80.0 ± 12.6 千克）以随机顺序完成 CBFR、IBFR（在休息时应用）和无血流限制（NoBFR）的 SIT 会话。每个 SIT 会话由两个 30 秒的全力冲刺测试组成，间隔 2 分钟。在每个冲刺过程中测量峰值功率（PP）、总功（TW）、冲刺递减评分（S dec ）、RPE 和肌肉氧合。p 值≤0.05 被认为具有统计学意义。与 NoBFR（13.4 ± 8.6%）相比，CBFR（25.5 ± 11.9%）和 IBFR（23.4 ± 9.3%）从第 1 次冲刺到第 2 次冲刺时，PP 下降幅度更大。从第 1 次冲刺到第 2 次冲刺，所有 3 种情况下的 TW 均相似（170835.6 ± 966.2 至 12687.2 ± 675.2 J），但与 IBFR（15548.0 ± 840.5 J）和 NoBFR（15915.4 ± 771.5 J）相比，CBFR（14320.7 ± 769.1 J）的 TW 较低（跨越时间）。S dec（84.3 ± 1.7%、86.1 ± 1.5%和 87.2 ± 1.1%，分别为 CBFR、IBFR 和 NoBFR）或 RPE 没有差异，从第 1 次冲刺（8.5 ± 0.3）增加到第 2 次冲刺（9.7 ± 0.1）。肌肉氧合反应随时间增加，各条件之间相似，而脱氧[血红素]和总[血红素]的增加在 CBFR 中最大。在 SIT 期间应用 BFR 会导致 PP 更大的下降，而 CBFR 会导致重复冲刺时 TW 更大的下降。与 IBFR 和 NoBFR 相比，CBFR 引起的脱氧[血红素]和总[血红素]增加更大，表明其在与 SIT 结合时可能会导致更大的代谢物积累。
