Effects of Aerobic Cycling Training on O2 Dynamics in Several Leg Muscles in Early Post-Myocardial Infarction
Effects of Aerobic Cycling Training on O2 Dynamics in Several Leg Muscles in Early Post-Myocardial Infarction
复制标题
有氧自行车训练对心肌梗死后早期腿部肌肉氧动态的影响
DOI：
10.1007/978-3-319-91287-5_15
复制
发表时间：
2018
影响因子：
--
通讯作者：
and T. Katsumura
中科院分区：
文献类型：
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作者：
S. Takagi;R. Kime;N. Murase,M. Niwayama;T. Osada;and T. Katsumura
本研究的目的是测试有氧自行车训练对心肌梗死后早期（后MI）几个腿部肌肉氧动力学的影响。15名MI后患者被分为12周训练组（TR，n = 9）或对照/非训练组（CON，n = 6）。所有参与者进行了两次坡道自行车运动，直到筋疲力尽：在MI的12-35天内，然后在12周后再次进行。采用近红外光谱法连续监测大腿和小腿肌肉血氧饱和度（SmO 2）和总血红蛋白浓度（Hb-total-Hb）。在CON中，在任何测量部位，12周前和12周后肌肉O2动力学均无显著变化。在TR中，12周后，在所有测量部位观察到较低的SmO 2。在总血红蛋白，没有显着的变化，发现训练后在TR的任何测量站点。此外，12周后的肌肉脱氧与所有肌肉中峰值O2摄取的改善有关。我们的研究结果表明，有氧自行车训练可能是有用的早期MI后患者，以提高峰值有氧能力，通过增强肌肉脱氧和O2提取在几个腿部肌肉。
The aim of this study was to test the effects of aerobic cycling training on O2dynamics in several leg muscles in early post-myocardial infarction (post-MI). Fifteen post-MI patients were divided into a 12-week training group (TR, n = 9) or a control/non-training group (CON, n = 6). All participants performed ramp bicycle exercise until exhaustion at two times: within 12–35 days of their MI and then again 12 weeks later. Muscle O2saturation (SmO2) and total hemoglobin concentration (∆total-Hb) were monitored continuously at thigh and lower leg muscles by near infrared spectroscopy. In CON, there were no significant alterations in muscle O2dynamics between before and after 12 weeks at any measurement sites. In TR, after 12 weeks, lower SmO2was observed at all measurement sites. In total-Hb, no significant changes were found after training at any measurement sites in TR. Moreover, the muscle deoxygenation after 12 weeks was related to an improvement of peak O2uptake in all muscles. Our findings suggest that aerobic cycling training may be useful for early post-MI patients to improve peak aerobic capacity via enhancement of muscle deoxygenation and O2extraction at several leg muscles.