Salvador Amadeo Félix, Schubert Karla Rochana, Cruz Rogério Santos de Oliveira, Corvino Rogério Bulhões, Pereira Kayo Leonardo, Caputo Fabrizio, de Oliveira Mariana Fernandes Mendes
Human Performance Research Group, Center for Health and Sport Sciences, Santa Catarina State University, Florianópolis, Brazil.
Human Performance Research Group, Center for Health and Sport Sciences, Santa Catarina State University, Florianópolis, Brazil.
Phys Ther Sport. 2016 Jul;20:1-6. doi: 10.1016/j.ptsp.2015.10.004. Epub 2015 Oct 21.
Investigate the influence of 4 weeks of walk training with blood flow restriction (BFR) on muscle strength, metabolic responses, 100-m and 400-m performances in an athlete with cerebral palsy.
An elite Paralympic sprinter (20 years, 176 cm, 64.8 kg) who presented with moderate hemiplegic cerebral palsy (right side impaired) completed four visits before and after 4 weeks of the BFR training: 1) anthropometric measurements, familiarization of maximal voluntary contraction (MVC), and an incremental test; 2) MVC measurements; 3) 400-m performance, and 4) 100-m performance. The walk training with BFR consisted of four bouts of 5 min at 40% of maximal aerobic speed with 1 min of passive rest with complete reperfusion.
All performance times were lower with training (100-m: 1%; 400-m: 10%), accompanied by adaptations in aerobic variables (V˙O2max: 6%; OBLA: 24%) and running economy (9-10%). Lactic acid energy metabolism was reduced (25-27%), even in the presence of a higher lactate efflux from the previously active muscles after training. MVC (right leg: 19%; left leg: 9%) increased in both legs unevenly, decreasing the muscle strength asymmetry between limbs.
These results indicate that cardiovascular and neuromuscular adaptations can be simultaneously induced following BFR training in a paralympic sprinter.
研究4周的血流限制（BFR）步行训练对一名脑瘫运动员肌肉力量、代谢反应、100米和400米成绩的影响。
一名患有中度偏瘫型脑瘫（右侧受损）的精英残奥会短跑运动员（20岁，身高176厘米，体重64.8千克）在进行4周BFR训练前后完成了四次访视：1）人体测量、最大自主收缩（MVC）熟悉度测试和递增测试；2）MVC测量；3）400米成绩测试；4）100米成绩测试。BFR步行训练包括四组，每组5分钟，速度为最大有氧速度的40%，每组之间有1分钟的被动休息以实现完全再灌注。
训练后所有成绩时间均有所降低（100米：1%；400米：10%），同时有氧变量（最大摄氧量：6%；无氧阈：24%）和跑步经济性（9 - 10%）也有改善。乳酸能量代谢降低（25 - 27%），即使训练后先前活动的肌肉有更高的乳酸流出量。双腿的MVC（右腿：19%；左腿：9%）不均衡增加，减少了肢体间的肌肉力量不对称性。
这些结果表明，在一名残奥会短跑运动员中，BFR训练后可同时诱导心血管和神经肌肉适应性变化。
