Department of Physical Education, Dongguan University of Technology, Guangdong, China.
Department of Physical Education, National Taiwan Normal University, Taipei, Taiwan.
J Strength Cond Res. 2021 Nov 1;35(11):3090-3096. doi: 10.1519/JSC.0000000000003313.
Chen, YT, Hsieh, YY, Ho, JY, and Lin, JC. Effects of running exercise combined with blood flow restriction on strength and sprint performance. J Strength Cond Res 35(11): 3090-3096, 2021-We investigated muscle strength and sprint performance after combining running exercise (RE) with blood flow restriction (BFR). Twelve male sprinters received 2 experimental warm-ups: (a) RE (50% heart rate reserve, 2 minutes × 5 sets, 1-minute rest interval) with BFR (occlusion pressure: 1.3 × resting systolic blood pressure) warm-up, namely RE-BFR; and (b) RE without BFR warm-up, namely RE. Isokinetic strength or 60-m sprint performance was assessed after a 5-minute recovery from each experimental warm-up. All subjects completed 4 exercise trials in a counterbalanced order: (a) RE-BFR-strength; (b) RE-strength; (c) RE-BFR-sprint; and (d) RE-sprint. Muscle activation (during RE), blood lactate (BLa) (pre- and post-REs), heart rate (HR), and rating of perceived exertion (RPE) (pre- and post-REs and at a 5-minute recovery) were determined during each experimental warm-up. The isokinetic knee flexor strength and the hamstring-quadriceps (H:Q) ratio observed for the RE-BFR warm-up were significantly higher than those observed for the RE warm-up (p < 0.05). However, no differences (p > 0.05) in the isokinetic knee extensor strength and 60-m sprint performance were observed between the 2 warm-ups. Running exercise-BFR warm-up induced a higher level of vastus lateralis and biceps femoris muscle activation than did RE warm-up (p < 0.05). Furthermore, RE-BFR warm-up induced higher HR, RPE, and BLa values than did RE warm-up after RE and at a 5-minute recovery (p < 0.05). These results suggest that RE-BFR warm-up may augment physiological responses and improve the H:Q ratio and isokinetic knee flexor strength. Thus, RE-BFR warm-up may be considered a practical warm-up strategy for promoting muscle strength and reducing the risk of hamstring injury in male sprinters.
陈，YT，谢，YY，何，JY，和林，JC。跑步运动与血流限制相结合对力量和短跑表现的影响。J 力量与调节研究 35（11）：3090-3096，2021-我们研究了结合跑步运动（RE）和血流限制（BFR）后肌肉力量和短跑表现。12 名男性短跑运动员接受了 2 种实验热身：（a）RE（50%心率储备，2 分钟×5 组，1 分钟休息间隔）与 BFR（闭塞压力：1.3×静息收缩压）热身，即 RE-BFR；（b）不进行 BFR 热身的 RE，即 RE。在从每个实验热身中恢复 5 分钟后，评估等速力量或 60 米短跑成绩。所有受试者以平衡的方式完成 4 项运动试验：（a）RE-BFR-力量；（b）RE-力量；（c）RE-BFR-短跑；（d）RE-短跑。在每个实验热身期间，确定肌肉激活（在 RE 期间）、血乳酸（BLa）（在 RE 前后）、心率（HR）和感知用力（RPE）（在 RE 前后和 5 分钟恢复时）。观察到 RE-BFR 热身的等速膝关节屈肌力量和腘绳肌-四头肌（H：Q）比值明显高于 RE 热身（p<0.05）。然而，在这两种热身之间，等速膝关节伸肌力量和 60 米短跑成绩没有差异（p>0.05）。与 RE 热身相比，RE-BFR 热身诱导更高水平的股外侧肌和股二头肌肌肉激活（p<0.05）。此外，与 RE 热身相比，RE-BFR 热身在 RE 后和 5 分钟恢复时引起更高的 HR、RPE 和 BLa 值（p<0.05）。这些结果表明，RE-BFR 热身可以增强生理反应，提高 H：Q 比值和等速膝关节屈肌力量。因此，RE-BFR 热身可以被认为是一种促进肌肉力量和减少男性短跑运动员腘绳肌受伤风险的实用热身策略。
